Editorial Prof. Dr. Martín Aznar Neste número destacamos o Prêmio de Reconhecimento Acadêmico “Zeferino Vaz”, conferido à Profa. Dra. Maria Regina Wolf Maciel. Também nesta edição, a Profa. Dra. Meuris Gurgel Carlos da Silva, Presidente do Comitê Científico do XVIII Congresso Brasileiro de Engenharia Química, apresenta um informe das atividades do evento, que foi realizado em Foz do Iguaçu, no mês de setembro, em conjunto com o 8 Encontro Brasileiro de Adsorção e o V Congresso Brasileiro de Termodinâmica Aplicada. Mais uma vez, no fim do ano, trazemos as patentes e softwares concedidos ou depositados durante o ano, bem como as teses e dissertações e a produção científica da Faculdade. Merece destaque especial a realização do Workshop da FEQ de 2010, que abordouuma possível reestruturação departamental. De maneira madura e responsável,uma proposta viável foi apresentada, que deve ainda ser discutida e aperfeiçoada. Que as discussões continuem nesse nível de entendimento, sempre visando o melhor funcionamento da instituição.

N E S T E N Ú M E R O 1 Editorial

1 Prêmio Zeferino Vaz

2 Artigos publicados em Outubro-Dezembro 2010

14 Teses e dissertações Outubro-Dezembro 2010

16 Patentes depositadas em 2010

17 Notas curtas

19 Informe COBEQ/EBA/ CBTermo 2010

15 de janeiro de 2011 Ano 5 Número 16

Uma publicação da Faculdade de Engenharia Química da UNICAMP Av. Albert Einstein 500, Campinas-SP, 13083-852 Editor: Prof. Dr. Martín Aznar, maznar@feq.unicamp.br, fone 3521-3962

Boletim da FEQ

Premio Zeferino Vaz

Profa. Maria Regina Wolf Maciel

No dia 16 de dezembro, a Profa. Dra. Maria Regina Wolf Maciel, junto com outros 17 docentes da UNICAMP, recebeu o Prêmio de Reconhecimento Acadêmico “Zeferino Vaz”, a maior distinção concedida pela UNICAMP aos docentes ativos em regime de dedicação exclusiva e que se destacaram de forma excepcional nas suas funções de docência e pesquisa. Os premiados são selecionados após várias etapas de avaliação por especialistas externos à UNICAMP. Esta é a segunda vez que a Profa. Maria Regina faz jus ao Prêmio, tendo sido agraciada também em 2002. A Profa.Maria Regina tem graduação em engenharia química pela Universidade Federal de São Carlos (1981),mestrado pela UNICAMP (1985) e doutorado pela Leeds University (1989). É professora titular MS-6, pesquisadora 1A do CNPq e possui mais de 180 artigos publicados, além de várias patentes. É especialista em processos de separação e termodinâmica aplicada, e já orientou mais de 50 dissertações de mestrado e 30 teses de doutorado. Foi Diretora da FEQ na gestão 1988-2002.

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Artigos Publicados em Revistas Indexadas

Outubro - Dezembro 2010

Bases de dados: ISI Web of Knowledge, Sci Finder Scholar, Compendex, SciELO, Scopus, Scirus.

Outubro Esterificación de ácido acrílico con 1-butanol en fase líquida catalizado con Al-MCM-41 Avellaneda-Maytán, E.; Valença, G.P. Avances en Ciencias e Ingeniería, 1 (2010), 35-43. ISSN: 0718-8706. http://www.exeedu.com/publishing.cl/av_cienc_ing/ Este trabajo estudia la esterificación de ácido acrílico con 1-butanol usando como catalizador Al-MCM-41 con diferentes grados de acidez a diferentes temperaturas. La síntesis del Al-MCM-41 fue realizada a partir de bromato de cetil-trimetil amonio usado como agente direccionador, NH4OH (25%), H2O desionizada y Al2(SO4)3. Los ensayos catalíticos fueron realizados por grupos y se trabajó a temperaturas entre 333 – 348 K y una pequeña muestra fue recolectada a intervalos de tiempos predeterminados para su posterior análisis en cromatografía gaseosa. Los resultados indican una conversión de 1-butanol a 348,15 K, 338,15 K y 333,15 K de 20,0 %, 17,8 % y 3,5 %, respectivamente, usando Al-MCM-41 como catalizador. Effect of freeze-drying on the mechanical, physical and morphological properties of glutaraldehyde-treated bovine pericardium: evaluation of freeze-dried treated bovine pericardium properties Borgognoni, C.F.; Maizato, M.J.S.; Leirner, A.A.; Polakiewicz, B.; Beppu, M.M.; Higa, O.Z.; Pitombo, R.N.M. Journal of Applied Biomaterials and Biomechanics, 8 (2010), 186-190. ISSN: 1722-6899. doi:10.5301/JABB.2010.6104 Purpose: Biomaterials have been widely used in the field of regenerative medicine. Bovine pericardium tissue has been successfully used as a bioprosthetic material in manufacturing heart valves, but studies concerning the tissue are ongoing in order to improve its storage, preservation and transportation. This article provides an overview of the characteristics of bovine pericardium tissue chemically treated after the freeze-drying process. These characteristics are essential to evaluate the changes or damage to the tissue during the process. Methods: The mechanical properties of the tissue were analyzed by three different methods due to its anisotropic characteristics. The physical properties were analyzed by a colorimetric method, while the morphological properties were evaluated by scanning electron microscopy (SEM). Results: The freeze-dried bovine pericardium showed no significant change in its mechanical properties. There was no significant change in the elasticity of the tissue (p>0.05) and no color change. In addition, SEM analysis showed that the freeze-dried samples did not suffer structural collapse. Conclusions: It was concluded that glutaraldehyde-treated bovine pericardium tissue showed no significant change in its properties after the freeze-drying process. Evaluation of absorption kinetics of oxygen scavenger sachets using response surface methodology Braga, L.; Sarantópoulos, C.L.; Peres, L.; Braga, J.W. Packaging Technology and Science, 23 (2010), 351-361. ISSN: 1099-1522. doi:10.1002/pts.905 The performance of oxygen scavengers can be influenced by several conditions, such as temperature (T) and relative humidity (RH), which are considered to be the two major factors. Therefore, the development of new scavengers requires the study of their performance, with these conditions varied. In this paper, the response surface methodology (RSM) was used to study the performance of a newly developed oxygen scavenger sachet and to model the influences of T and RH and their interaction on the absorption capacity and rate constant of the developed sachet. Commercial oxygen scavenger sachets were used for comparison purposes. The oxygen absorption capacity and rate constant were evaluated with a 22 factorial design with a central point. The results showed that each absorber sachet presented a different behaviour and there were significant interactions between T and RH; so, the RSM was the most appropriate for these studies. The developed sachet presented a better performance compared with the commercial ones at 23C and 53% RH, which represents the condition for commercialization at room temperature of foods of intermediary water activity, while in the extreme conditions (100% RH and 37・C) all sachets present a similar absorption capacity.

Boletim da FEQ Página 3 Effect of process variables on efficiency and particle growth of Spilanthes oleracea seeds coating Costa, C.M.L.; Faria, L.J.G.; Rocha, S.C.S. Materials Science Forum, 660/661, (2010), 419-425. ISSN: 1662-9752. doi:10.4028/www.scientific.net/MSF.660-661.419 The coating of vegetable seeds is a very common technique, mainly for the species which have small seeds. One of its functions is to increase the seed size to direct sowing. In the present study the coating of Spilanthes oleracea L. seeds with a polymeric suspension in fluidized bed was analyzed. The effects of process variables on the coating efficiency of top-spray fluidized bed coating were evaluated. The independent variables studied were the flow rate of coating suspension and the air mass flow. The quantification for the entrance variables influence on the coating efficiency and granule growth, as well as the identification of optimal conditions were made by means of an experiment factorial design technique. Polynomial models for the responses: efficiency and relative growth of the particles were deduced. The highest coating efficiency was achieved at a high flow rate of coating suspension. Interaction of histidine-tagged human proinsulin with immobilized nickel ion: effect of chelating ligand and thermodynamics analysis Góes, L.C.; Miranda, E.A.; Bueno, S.M.A. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 369 (2010), 176-185. ISSN: 0927-7757. doi:10.1016/j.colsurfa.2010.08.019 The nature of the chelating ligand is one of various factors affecting the performance of IMAC. In this work we studied the effect of three chelating ligands on the adsorption of recombinant human proinsulin with His-tag (proinsulin-(His)6). The chelating ligands (complexed with Ni(II)) were two tetradentates (carboxymethylated aspartic acid, CM-Asp, and Tris(2-aminoethyl)amine, TREN) and one pentadentate (Tris (carboxymethyl) ethylenediamine, TED). Their performance were compared with the performance of one tridentate ligand (iminodiacetic acid, IDA) and the commercial adsorbent HisTrap both also complexed with Ni(II). Higher selectivities were achieved with Ni(II)-CM-Asp and Ni(II)-TED. The adsorption capacity decreased according to the order: TREN, HisTrap, IDA, CM-Asp, and TED (172.82, 167.98, 133.09, 110.18, and 69.22 mg of proinsulin/mL of gel, respectively, at 25C). Although TREN-agarose had the highest capacity, the ligand with the second highest capacity - HisTrap - showed better performance since proinsulin was eluted in a single, concentrated peak with imidazole, while for Ni(II)-TREN proinsulin was eluted with imidazole and EDTA, requiring an extra step to free the product from the EDTA. Therefore, the choice of an adsorbent for this separation depends on the priority: capacity (TREN or HisTrap for one step process) or selectivity (CM-Asp). Adsorption isotherms were determined for temperatures from 4 to 45C and the Langmuir model was fitted to the experimental data. The thermodynamics analysis showed positive ΔH (from 18.83 to 86.05 kJ/mol), indicating that the adsorption of proinsuin-(His)6 in all chelating ligands is an endothermic process. The negative change in Gibbs free energy (from -26.30 to -35.11 kJ/mol) indicated that the adsorption of the proinsulin-(His)6 on all the adsorbents studied was a thermodynamically favorable process. Analysis of conversion and operation strategies for enzymatic hydrolysis of lignocellulosic biomass in a series of CSTRs with distributed feeding González Quiroga, A.; Costa, A.C.; Maciel Filho, R. Bioprocess and Biosystems Engineering,33 (2010), 901-910. ISSN: 1615-7605. doi:10.1007/s00449-010-0413-y Design considerations for enzymatic hydrolysis of lignocellulosic biomass in two and three continuous stirred tank reactors (CSTRs) in series with distributed feeding of substrate and enzyme, followed by a series of CSTRs, are discussed. A previously developed, fitted, and validated kinetic model is extended to accommodate distributed feeding and used along with the micromixing limiting situations of macrofluid and microfluid to describe the reaction system. The capabilities of the reaction system proposed are explored for a range of cumulative substrate concentration from 5 to 20% w/w (dry basis). Continuous distributed feeding does not show advantages in terms of cellulose conversion when compared with the operation where an equivalent mass of substrate is added at the first reactor of the series, but the potential to increase substrate concentration beyond the concentrations that can be handled in conventional CSTRs, and therefore, the volumetric productivity of reactors, is evident.

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Fluid dynamic study of the fluidized bed wit jambu seeds (Sphilantes oleracea L.) Lourenço, R.O.; Costa, C.M.L.; Rocha, S.C.S.; Mesquita, A.L.A.; Macêdo, E.N. Materials Science Forum, 660/661 (2010), 413-418. doi:10.4028/www.scientific.net/MSF.660-661.413 This work has as objective the study experimental and computational of the hydrodynamics of gas-solid fluidized bed. The gas-solid fluidized beds present important applications in chemical industry; among typical examples of fluidized beds some applications could be outlined: the syntheses and catalytic reactions, the catalytic regeneration, the combustion and gasification of coal, coating, drying, etc. The simulated data were obtained through the commercial CFD (Computational Fluid Dynamics), and the results were compared to those obtained by experiments conducted in a fluidized bed, containing jambu seeds (Sphilantes oleracea L.) of 772.21 2.98 µm in diameter, sphericity de 0.45 0.0066, bulk density 1130.8 ± 0.22 Kg/m3 and with porosity 0.2303 0.0099. In this work the porosity profile and characteristic curve of fluidized bed were calculated by using an Eulerian multiphase model. The comparisons showed a very good agreement between experimental and simulation results. Response surface methodology applied to ozone generation Mochi, V.T.; Pacheco, J.R.; Cremasco, M.A. Ozone Science & Engineering, 32 (2010), 372-378. ISSN: 1547-6545. doi:10.1080/01919512.2010.508676 In this work, a strategy is presented to optimize the ozone generation by response surface methodology. A dielectric barrier discharge ozone generator was developed in which it is possible to control electrical current frequency and gas flow entering the generator. Response surface methodology was used to identify ozone generator optimum operational conditions, that is, those that permit considerable ozone productivity and high concentration of ozone gas. Liquid−liquid equilibrium data in ionic liquid + 4-methyldibenzothiophene + n-dodecane systems Oliveira, L.H.; Aznar, M. Industrial & Engineering Chemistry Research, 49 (2010), 9462–9468. ISSN: 1520-5045. doi:10.1021/ie1009876 In this work, liquid−liquid equilibrium data for 1-ethyl-3-methylimidazolium diethylphosphate ([emim][DEtPO4]) or 1-ethyl-3-methylimidazolium ethylsulfate ([emim][EtSO4]) + 4-methyl-dibenzothiophene (4-MDBT) + n-dodecane systems at 25 and 40C and atmospheric pressure (≈95 kPa) were determined by refractometry. 4-MDBT is a DBT derivative and it is one of the most difficult diesel sulfur pollutants to remove by the conventional process of hydrodesulfurization. The liquid−liquid equilibrium data were used to study the 4-MDBT extraction from n-dodecane as model diesel oil. 4-MDBT distribution coefficients, solvent selectivities, and extraction data also indicate that [emim][DEtPO4] is a better solvent for extractive desulfurization of n-dodecane than [emim][EtSO4]. For a solvent/n-dodecane mass ratio of 0.6, the sulfur content in n-dodecane decreases 17−24% and 5−15% for [emim][DEtPO4] and [emim][EtSO4], respectively. The quality of the data was ascertained by the Hand and Othmer−Tobias correlations, which presented R2 > 0.97 for all systems. The NRTL model was used to correlate the data and showed root-mean-square deviations of <0.15%. Biosorption of chromium(III) and copper(II) ions onto marine alga Sargassum sp. in a fixed-bed column Silva, E.A.; Vaz, L.G.L.; Veit, M.T.; Fagundes-Klen, M.R.; Cossich, E.S.; Tavares, C.R.G.; Cardozo-Filho, L.; Guirardello, R. Adsorption Science and Technology, 28 (2010), 449-464. ISSN: 0263-6174. doi:10.1260/0263-6174.28.5.449 The simultaneous biosorption of chromium(III) and copper(II) ions onto Sargassum sp. alga in a fixed-bed column reactor was investigated. Experiments were undertaken to determine the effect of the feed concentration (1, 2, 3 and 6 mequiv/l) and the composition of the metal ion solution [0.25, 0.50 and 0.75 Cu(II)/Cr(III) ratio] on the behaviour of the breakthrough curves. A mathematical model was applied to describe the biosorption in a fixed-bed column. Equilibrium was described in this model in terms of a binary Langmuir type adsorption process, together with mass transfer in the biosorbent based on the Linear Driving Force (LDF) model. The partial differential equations for the system were solved numerically by the finite volume method. The proposed mathematical model for the biosorption process provided a satisfactory description of the dynamics of metal ion removal in the column relative to the experimental data obtained. The adsorptive capacity of the biomass for Cr(III) ions in the binary system was greater than that for Cu(II) ions. The developed model could provide a useful tool for the optimization of Cr(III) and Cu(II) ion removal processes by Sargassum sp. biomass and the design of the corresponding fixed-bed columns.

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Novembro Experimental determination of binodal curves and study of the temperature in systems involved in the production of biodiesel with ethanol Camacho-Ardila, Y.; Pinto, G.M.F.; Machado, A.B.; Wolf Maciel, M.R. Journal of Chemical & Engineering Data, 55 (2010), 4592-4596. ISSN: 1520-5134. doi:10.1021/je9010322 Binodal curves of systems involved in the production of soybean oil biodiesel and castor oil biodiesel were obtained at different temperatures by the titration method under isothermal conditions. The measurements allow the analysis of the mutual solubility of the compounds present after the transesterification reaction and supply data for the process of separation and purification of biodiesel. The systems studied were soybean oil biodiesel + glycerol + ethanol at temperatures of (298.15, 333.15, and 343.15) K, soybean oil biodiesel + ethanol + water at temperatures of (298.15 and 323.15) K, and castor oil biodiesel + ethanol + glycerol to 333.15 K. The highest levels of biodiesel were obtained at 298.15 K, although small changes in temperature did not significantly affect the system behavior. The two-phase region for the system of ethanol + biodiesel + glycerol at 333.15 K using soybean oil as raw material was bigger than the two-phase region using castor oil, which allows us to separate higher amounts of biodiesel after the transesterification reaction at the stage of interest. Time domain analysis of optical fiber probe signals measured in a short circulating fluidized bed riser Castilho, G.J.; Cremasco, M.A. Particulate Science and Technology, 28 (2010), 520-528. ISSN: 1548-0046. doi:10.1080/02726350903579330 A time domain analysis of electrical signals provided by an optical fiber probe was conducted in order to characterize the local flow dynamics of a short circulating fluidized bed riser with a height of 2.42 m and ID of 82 mm. Experiments were carried out with air, and the bed materials were FCC particles (Geldart A). Probability and standard deviation distribution of signals measured locally at five radial positions and four axial positions are presented. The probability distribution can indicate the uniformity of the flow in terms of solids holdup distribution and can reveal the formation of clusters. Probability distributions indicate that the flux is more uniform in the core region of the reactor and that clusters appear near the wall. The highest value obtained in the standard deviation of the radial distribution suggests greater interaction between particles at that radial position. It was found that for the two lower axial positions, this phenomenon occurs near the wall, and for the two higher positions, the interactions between particles occur both near the wall and in the center due to the exit configuration of the reactor. Solid−liquid equilibrium of tristearin with refined rice bran and palm oils Costa, M.C.; Rolemberg, M.P.; Santos, A.O.; Cardoso, L.P.; Krähenbühl, M.A.; Meirelles, A.J.A. Journal of Chemical & Engineering Data, 55 (2010), 5078-5082. ISSN: 1520-5134. doi:10.1021/je100647b In the present study, phase diagrams of two systems, formed by tristearin (1,3-di(octadecanoyloxy)propan-2yl octadecanoate) with refined rice bran oil or refined palm oil, were obtained by Differential Scanning Calorimetry (DSC) and reported in the literature for the first time. The X-ray diffraction technique was employed to verify the crystallization behavior of the individual components and for the mixture tristearin plus refined palm oil. The UNIFAC model was successfully used to predict the liquidus line of these systems, with a root-mean-square deviation between the experimental and calculated melting temperatures below 1.3 %. Optimization of corn malt drying by use of a genetic algorithm Curvelo-Santana, J.C.; Araújo, S.A.; Librantz, A.F.H.; Tambourgi, E.B. Drying Technology, 28 (2010), 1236-1244. ISSN: 1532-2300. doi:10.1080/07373937.2010.500439 This work aimed at the kinetic simulation and drying process optimization of corn malt using a genetic algorithm (GA) for estimation of temperature and time parameters, in order to maintain the maximum activity of - and -amylases enzymes in the obtained product. Thus, the germinated corn seeds were dried at 54-76C in an air convective dryer, and from time to time the moisture content and enzymatic activity were measured. Simulation and optimization of the drying process was made by use of a GA method, an optimization technique inspired by the biological natural selection process. These experimental data were used to fit the models. Results showed that seeds were dried after 3-5 h of the drying process. Among the used models, the kinetic model of water diffusion into corn seeds showed the best fit. In addition, drying temperature and time showed an exponential influence on the enzymatic

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activity. Optimizations by GA showed that at 54C and between 5.6 and 6.4 h of the drying process, values of specific activity of 5.26 ± 0.06 SKB/mg and 15.69 ± 0.10% of remaining moisture in corn malt were found Transesterification of vegetable oils: simulating the replacement of batch reactors with continuous reactors Fonseca, F.A.S.; Vidal-Vieira, J.A.; Ravagnani, S.P. Bioresource Technology, 101 (2010), 8151-8157. ISSN: 0960-8524. doi:10.1016/j.biortech.2010.05.077 A kinetic model was employed to represent biodiesel production via transesterification of vegetable oils. Reaction rate constants found in the open literature were used in order to compare the behavior of batch and continuous processes. A single continuous stirred tank reactor (CSTR) under the usual operation conditions was not capable of achieving the same productivity as a batch process. However, when reactors in series were used, the continuous process presented a behavior similar to batch processes. As a result, it was evidenced that a series of CSTRs can be an industrially feasible choice for replacing batch transesterification reactors in large scale biodiesel plants. Further, it was shown that the loss in productivity caused by changing from batch to continuous process can be compensated by means of using higher catalyst concentrations. Support effect over bimetallic ruthenium-promoter catalysts in hydrogenation reactions Fontana, J.; Vignado, C.; Jordão, E.; Carvalho, W.A. Chemical Engineering Journal, 165 (2010), 336-346. ISSN: 1385-8947. doi:10.1016/j.cej.2010.09.050 The present work evaluates the influence of RuSn catalyst supported on La2O3, TiO2, SiO2 and Nb2O5 in dimethyl adipate (DMA) hydrogenation to obtain 1,6-hexanodiol. The catalysts were prepared by impregnation method, calcined and reduced at 673 K. The reactions were carried out in liquid phase in a Parr high pressure reactor at 528 K and 50 bar. The catalysts supported on SiO2 and Nb2O5 show higher selectivity to diol, 59% and 50% and conversion of 57% and 28%, respectively, indicating that the new active phases formed in the metal-support interface are able to hydrogenate the DMA ester group. The presence of positively charged tin species acting as Lewis acid sites could be considered as responsible for the carbonyl activation. It is also verified that a synergic effect between promoter and support is extremely important for the formation of 1,6-hexanediol. Fluid dynamics and drying of cohesive particles of a biodegradable polymer (poly-hydroxybutyrate) in a rotating pulsed fluidized bed Godoi, F.C.; Boin, E.A.S.F.; Pereira, N.R.; Rocha, S.C.S. Drying Technology, 28 (2010), 1297-1306. ISSN: 1532-2300. doi:10.1080/07373937.2010.487715 This article presents the results of fluid dynamics and drying of poly-hydroxybutyrate (PHB) granules in a rotating pulsed fluidized bed (RPFB) dryer. Cohesiveness of PHB results in problems when using conventional drying techniques, such as a fluidized bed dryer. The excess surface water on the particles may form agglomerates that damage the flowability of the material inside the dryer. The drying study in RPFB consisted of adjusting mathematical models for predicting the moisture evaporation during the constant drying rate period (linear fit) and the decreasing drying rate period (analytical solution of Fick's second law). The influence of temperature, rotation frequency, and velocity of the drying air on the constant drying rate (Nc), effective diffusivity (Deff), and mass of particles elutriated (me) during drying was evaluated. Particle porosity was analyzed before and after drying and scanning electronic microscopy (SEM) was employed to verify structural changes on the PHB granules after drying. The RPFB dryer proved to be appropriate to dry the PHB granules, resulting in an excellent fluid dynamics behavior of the particles inside the bed and providing uniform drying of the solids. Temperature and velocity of the air had a significant influence on the drying process, but rotation frequency did not affect the process in the ranges analyzed. Fine particle elutriation occurred during the first 10 min of drying. After drying, the porosity changed and breakage of the particles was observed due to attrition inside the bed. Diffusion of plasticizer in a solid propellant based on hydroxyl-terminated polybutadiene Libardi, J.; Ravagnani, S.P.; Morais, A.M.; Cardoso, A.R. Polímeros: Ciência e Tecnologia, 20 (2010), 241-245. ISSN: 0104-1428. doi:10.1590/S0104-14282010005000048 The aim of this work was to determine the dioctyl azelate (DOZ) plasticizer diffusion coefficient (D) for samples containing the interfaces of rubber, liner and solid composite propellant based on hydroxyl-terminated polybutadiene (HTPB). The samples used in the diffusion study were aged up to 31 days after

Boletim da FEQ Página 7the cure period at 80 C. A computer program implementing a mathematical model of Fick's second Law of diffusion was developed to calculate the diffusion coefficient based on concentration data obtained from gas chromatographic analyses. The effects of the diffusion phenomenon were also investigated by Shore A hardness and scanning electron microscope (SEM) techniques. These analyses were carried out using samples aged at room temperature and at 80 C. The hardness results showed an increasing trend for the samples aged at room temperature; however in the tests carried out at 80 C they showed the opposite trend. The SEM analyses detected meaningful changes in the surface morphology of the propellant for both aging temperatures. Aerobic biodegradation of butanol and diesel oil blends Mariano, A.P.; Tomasella, R.C.; Di Martino, C.; Morais, E.B.; Maciel Filho, R.; Seleghim, M.H.R.; Contiero, J.; Tornisielo, S.M.T.; Angelis, D.F. African Journal of Biotechnology, 9 (2010), 7094-7101. ISSN: 1684-5315. http://www.academicjournals.org/AJB/PDF/pdf2010/18Oct/Mariano%20et%20al.pdf This work aimed to evaluate the aerobic biodegradation of butanol/diesel oil blends (5, 10, 15, 20%, v/v) in comparison to the biodiesel/diesel oil blend (20%, vol./vol.). Respirometric experiments simulating the contamination of natural environments (soil and water from a river) were carried out in biometer flasks (250 mL) used to measure microbial carbon dioxide (CO2) production. The automated turbidimeter Bioscreen C was used to follow the growth of Pseudomonas aeruginosa LBI on butanol/diesel oil blends. A redox indicator (2,6-dichlorophenol indophenol - DCPIP) test was used to evaluate the capability of four inocula to biodegrade the blends with 20% (v/v). The experiment which simulated the soil contamination demonstrated that butanol is less biodegradable than diesel oil, and for this reason the increase in the portion of butanol in the butanol/diesel blend from 5 to 20% had negligible effects on biodegradation. While in soil the biodiesel/diesel blend was more easily biodegraded than the butanol/diesel blend, in water this order was the inverse. The insoluble fuels (diesel and biodiesel) were poorly biodegraded in water and the biodegradation of the butanol/diesel blend was favored by the water solubilization of the butanol, which enhances the bioavailability of this compound. On the other hand, initial concentrations of butanol in the water higher than 10 mL L-1 inhibited the cell growth of the tested microorganisms. Thus, butanol toxicity presumably had a significant effect on the degree of biodegradation of the fuel blends. Preparation and characterization of ethanol-treated silk fibroin dense membranes for biomaterials application using waste silk fibers as raw material Nogueira, G.M.; Rodas, A.C.D.; Leite, C.A.P.; Giles, C.; Higa, O.Z.; Polakiewicz, B.; Beppu, M.M. Bioresource Technology, 101 (2010), 8446-8451. ISSN: 0960-8524. doi:10.1016/j.biortech.2010.06.064 The possibility of producing valued devices from low cost natural resources is a subject of broad interest. The present study explores the preparation and characterization of silk fibroin dense membranes using waste silk fibers from textile processing. Morphology, crystallinity, thermal resistance and cytotoxicity of membranes as well as the changes on the secondary structure of silk fibroin were analyzed after undergoing treatment with ethanol. Membranes presented amorphous patterns as determined via X-ray diffraction. The secondary structure of silk fibroin on dense membranes was either random coil (silk I) or β-sheet (silk II), before and after ethanol treatment, respectively. The sterilized membranes presented no cytotoxicity to endothelial cells during in vitro assays. This fact stresses the material potential to be used in the fabrication of biomaterials, as coatings of cardiovascular devices and as membranes for wound dressing or drug delivery systems. Liquid-liquid equilibrium of water + phenol + {1-butanol or 2-butanol or tert-butanol} systems Oliveira, L.H.; Aznar, M. Journal of Chemical Thermodynamics, 42 (2010), 1379-1385. ISSN: 0021-9614. doi:10.1016/j.jct.2010.06.007 Liquid-liquid equilibrium (LLE) and binodal curve data were determined for the systems water + phenol + tert-butanol at T = 298.15 K, water + phenol + 2-butanol and water + phenol + 1-butanol at T = 298.15 K and T = 313.15 K by the combined techniques of densimetry and refractometry. Type I curve (for tert-butanol) and Type II curves (for 1- and 2-butanol) were found. The data were correlated with the NRTL model and the parameters estimated present root mean square deviations below 2% for the system with tert-butanol and lower than 0.8% for the other systems.

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Drying of starch suspension in spouted bed with inert particles: physical and thermal analysis of product Pereira, N.R.; Godoi, F.C.; Rocha, S.C.S. Drying Technology, 28 (2010), 1288-1296. ISSN: 1532-2300. doi:10.1080/07373937.2010.490891 Drying in a spouted bed with inert particles promotes high heat and mass transfer rates due to the gas-solid contact, which in turn is successfully achieved by particles' cyclic movements. Because of its advantages and versatility, spouted bed drying of suspensions on inert particles is a potential alternative to flash and spray drying and has received attention in research and development in recent years. In this context, this article describes the drying process of cassava starch suspension (35% initial solids content) in a laboratory-scale cone-cylindrical spouted bed dryer with polypropylene particles. The setup consists of a cone-cylindrical spouted bed dryer (internal angle of 60, 20-cm column diameter, and 5-cm inlet orifice diameter) with top feeding of suspension, which is sprayed by a double-fluid atomizer. The study focused on the fluid dynamics of polypropylene particles at inlet air temperatures of 60, 75, and 90C and the effects of air temperature on dried starch properties, such as gelatinization temperature, pasting temperature, particle size distribution, crystalline profile, and final moisture content. The pressure drop fluid dynamic curves did not allow a proper analysis and assessment of minimum spout air flow when air was atomized in the bed. Therefore, the minimum spout air flow was determined by the visual observation of the fountain height in this case. Inlet air temperatures did not show a significant difference in the minimum spout air flow, but the bed presented dynamic instability with increasing inlet air temperature. The results showed that the spout fluid dynamic regime during drying was stable with air flow around 1.5 times the minimum spout air flow in the range of inlet air temperature studied. Drying air temperature influenced final moisture content of samples, which was lower than 13% for all conditions. However, physical properties of dried starch were not affected by process conditions. Metabolic effects of the initial glucose concentration on microbial production of hyaluronic acid Pires, A.M.B.; Santana, M.H.A. Applied Biochemistry and Biotechnology, 162 (2010), 1751-1761. ISSN: 02732289. doi:10.1007/s12010-010-8956-6 The objective of the present work was to evaluate the metabolic effects induced by the initial glucose concentration (IGC) on the cultivation of Streptococcus zooepidemicus for the production of hyaluronic acid (HA). These effects were monitored along non-controlled pH cultivations, carried out in 250-mL Erlenmeyer flasks (natural aeration) and in a 3-L bioreactor (forced aeration) as well. Effects of the IGC were observed with focus on the main metabolites, cell growth, production, and average molecular weight of HA. The absence of glucose resulted in a mixed acid metabolism independent of the oxygen supply, while, for IGCs ranging from 5 to 90 g L-1, the homolactic metabolism was prevalent. The IGC had no influence on the amounts of either biomass or HA produced in the cultivations carried out in flasks; however, cultivations in 3-L bioreactor were found to be strongly dependent on it. The highest concentration of HA (1.21 g L-1) was obtained from 25 g L-1 IGC, the only cultivation where the conversion of glucose to HA was higher than the one of glucose to biomass. Average molecular weight of HA increased concomitant with the IGC, independently of aeration; nevertheless, it decreased along cultivation under forced aeration, due to the shear imparted by stirring. Retinyl palmitate flexible polymeric nanocapsules: characterization and permeation studies Teixeira, Z.; Zanchetta, B.; Meloa, B.A.G.; Oliveira, L.L.; Santana, M.H.A.; Paredes-Gamero, E.J.; Justo, G.Z.; Nader, H.B.; Gutierres, S.S.; Durán, N. Colloids and Surfaces B: Biointerfaces, 81 (2010), 374-380. ISSN: 0927-7765. doi:10.1016/j.colsurfb.2010.06.016 Polymeric nanocapsules with elastic characteristics were prepared by the pre-formed polymer interfacial deposition method. The system consists of an oily core of retinyl palmitate with Span 60 and a polymeric wall of poly(D,L-lactide) (PLA). A narrow size distribution (215 nm, P.D.I. 0.10) was showed by dynamic light scattering (DLS) analyses. Particle deformability was observed by transmission electron microscopy (TEM) images and permeation of the particles through two superposed membranes of smaller pore diameters. Permeation studies were achieved using plastic surgery abdominal human skin by Franz diffusion cell. Retinyl palmitate permeates into deep skin layers. Besides, a PLA fluorescent derivative conjugated with Nile blue dye by an amide covalent bound was additionally obtained. Permeation profile of the nanocapsules with the fluorescent polymer was evaluated by confocal laser scanning microscopy (CLSM). The CLSM showed that nanocapsules were distributed uniformly, suggesting that the permeation

Boletim da FEQ Página 9mechanism through skin is intercellular. Thus, the use of these nanocapsules may be a feasible strategy to enhance the permeation of actives into the skin when delivery to deep layers is aimed.

Dezembro Synthesis and thermophysical properties of two new protic long-chain ionic liquids with the oleate anion Álvarez, V.H.; Mattedi, S.; Martin-Pastor, M.; Aznar, M.; Iglesias, M. Fluid Phase Equilibria, 299 (2010), 42-50. ISSN: 0378-3812. doi:10.1016/j.fluid.2010.08.022 This work reports the synthesis of 2-hydroxy ethylammonium oleate and bis(2-hydroxy ethyl)ammonium oleate ionic liquids, which have a long aliphatic chain as well as the study of some of their physical properties, in particular the effect of temperature on their density, speed of sound, viscosity, and refractive index. 1H and 13C NMR spectra were used to characterize the chemical structure of the species in concordance with FT-IR spectra. DOSY NMR spectra were used to determine the self-diffusion coefficients of 2-hydroxy ethylammonium oleate ionic liquid, which were consistent with the formation of a lamellar or micellar liquid crystal phase; due the similar structure, a similar aggregation in the bis(2-hydroxy ethyl)ammonium oleate ionic liquid it is expected. Nanocomposites-based polyolefins as alternative to improve barrier properties Carvalho, J.W.C.; Sarantópoulos, C.L.; Innocentini-Mei, L.H. Journal of Applied Polymer Science, 118 (2010), 3695-3700. ISSN: 1097-4628. doi:10.1002/app.32507 This work investigates the influence of some ammonium quaternary compounds as coupling agent in polyethylene/clay nanocomposites to improve the performance of polyethylene used as packaging barrier material. The 3 wt % of vermiculite used as a nanofiller was added to linear low-density polyethylene (LLDPE) and to linear low-density polyethylene grafted with maleic anhydride (LLDPE-g-MA). The analysis results revealed that the influence of both the clay exfoliation in a polymer matrix and the coupling agents on the barrier properties were significant. Among the coupling agents used, cetylpropyldimethylammonium chloride yielded the best result for vermiculite exfoliation. A reduction of up to 18% in the oxygen-permeability coefficient was observed in the nanocompounds with exfoliated vermiculite. The nanocomposite produced with vermiculite did not prove to be efficient as a moisture barrier against according to the analysis performed. Evaluation of the effect of dry-film biocides on paint film preservation using neural networks Contant, S.; Caritá Jr., G.; ; Lona, L.M.F. Brazilian Journal of Chemical Engineering, 27 (2010), 643-651. ISSN: 0104-6632. doi:10.1590/S0104-66322010000400016 Biocides play an important role in the preservation of a variety of products susceptible to microbiological growth such as paint, a material that can undergo microbial deterioration both in storing (inside the can) and after the application on a surface. In this work, artificial neural networks were used to predict the level of fungal growth on surfaces painted with water-based paints with biocide formulations containing different concentrations of ten kinds of commercial and experimental chemical agents. The use of neural networks is well known in chemical processes and they are a powerful tool for discovering relationships between sets of data. Industrial Environmental Tropical Chamber tests were used as the network training set. The importance of the each additive of the dry-film biocide formulation in prevention of biodeterioration was also examined. Modeling for Taxol® separation in a simulated moving bed Cremasco, M.A.; Starquit, A.N. Brazilian Archives of Biology and Technology, 53 (2010), 1433-1441. ISSN 1516-8913. doi:10.1590/S1516-89132010000600020 This work presents an alternative numerical resolution strategy for a model to describe the dynamic of linear adsorption processes involving multicomponent mixture of taxanes with Taxol® (paclitaxel), a powerful anti-cancer agent, and non-identified impurities, in a Simulated Moving Bed (SMB) system. To solve the model, a hybrid method were used. The liquid concentration inside the particles was found analytically and was related with the liquid bed concentration using Duhamel’s theorem. The results from simulation were compared with experimental ones from the literature, showing a good agreement, which demonstrated the applicability of the model and of the hybrid resolution proposed.

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Isomerização do óleo essencial de pimenta-longa (Piper hispidinervium C. DC) para a obtenção de isosafrol Cremasco, M.A.; Braga, N.P. Acta Amazonica, 40 (2010), 737-740. ISSN: 0044-5967. doi:10.1590/S0044-59672010000400014 As piperáceas brasileiras apresentam propriedades para serem utilizadas, entre outras aplicações, como inseticidas e antifúngicos. Dentre as piperáceas, pode-se citar a Piper hispidinervum C. DC. De suas folhas e dos talos finos extrai-se um óleo essencial rico em safrol, que é utilizado pela indústria como matéria-prima na manufatura, por exemplo, do piperonal. A sequência natural do processo para a obtenção do piperonal é o de submeter o safrol obtido da concentração do óleo essencial à isomerização para seu correspondente isômero estável chamado isosafrol. Apresenta-se neste artigo, por sua vez, a síntese do isosafrol diretamente do óleo essencial de pimenta-longa (Piper hispidinervium C. DC). Este óleo essencial apresenta o safrol como constituinte majoritário, possibilitando a sua isomerização para a produção de isosafrol, que é empregado nas indústrias farmacêuticas e de fragrâncias. O objetivo deste trabalho é o de apresentar a obtenção do isosafrol sem a necessidade da etapa de separação do safrol do óleo essencial de pimenta-longa. Para tanto, foram realizados ensaios de isomerização do óleo essencial, obtendo-se uma solução contendo 79,4 % da mistura cis, trans-isosafrol. Ressalte-se que o óleo essencial continha 86,4 % de safrol, resultando em alto rendimento na sua conversão a cis, trans-isosafrol de 97,1 %. Extração e caracterização de uma enzima proteolítica do curauá (Ananas erectifolius) Ferreira, J.F.; Sbruzzi, D.; Barros, K.V.G.; Machado, I.S.; Tambourgi, E.B. Exacta, 8 (2010), 179-184. ISSN: 1983-9308. http://www4.uninove.br/ojs/index.php/exacta/article/view/2013 O curauá (Ananas erectifolius) é uma planta fibrosa encontrada no Norte e Centro-Oeste do Brasil, uma bromeliácea de características físico-químicas que lhe conferem grande potencial de utilização na indústria automobilística, como fonte de fibras. Como toda planta da família Bromeliaceae, contém níveis significativos da enzima bromelina, de alto valor comercial e com ampla aplicação também na indústria farmacêutica, alimentícia e cosmética. Neste trabalho foram realizados testes experimentais de extração da enzima proteolítica do curauá sob diferentes condições de pH e temperatura, medindo-se a atividade enzimática para cada um dos ensaios, utilizando-se o reativo de Biureto e determinando-se a temperatura e pH ótimos de sua utilização, ou seja, valores em que a atividade enzimática da enzima é máxima, com o objetivo de otimizar as condições de uso do resíduo para posterior purificação. Foram utilizadas as duas variedades comercialmente encontradas (branca e roxa). Os resultados mostraram que o curauá possui enzimas com atividade proteolítica, sendo o pH ótimo 8,5 para as duas variedades e temperaturas ótimas de 30 ºC para a espécie branca, e 10 C, 20 C e 35 C para a roxa. Utilização do protocolo de comunicação OLE for Process Control em processos industriais Franco, I.C.; Schmitz, J.E.; Fileti, A.M.F.; Silva, F.V. Exacta, 8 (2010), 319-329. ISSN: 1983-9308. http://www4.uninove.br/ojs/index.php/exacta/article/view/2431/1852 Neste artigo, propõe-se a utilização de um software matemático juntamente com o protocolo OLE for Process Control (OPC) para o desenvolvimento de sistemas de controle em processos industriais, transformando o software matemático em um sistema supervisório capaz não somente de monitorar o processo, mas também de desenvolver e implementar algoritmos de controle inteligente. Um estudo foi então realizado sobre a confiabilidade da comunicação OPC entre o software matemático, o Controlador Lógico Programável (CLP) e um sistema de refrigeração industrial. Nesta pesquisa, constatou-se que a comunicação é adequada para a aplicação, pois o software matemático utilizado na comunicação entre o CLP e o sistema de refrigeração apresentou boa confiabilidade referente à qualidade do sinal de comunicação, além de tempo real de comunicação. Conclui-se, portanto que essa forma de comunicação é uma potente ferramenta para o monitoramento, o desenvolvimento e a implementação de controladores avançados. Smart hollow microspheres of chondroitin sulfate conjugates and magnetite nanoparticles for magnetic vector Guilherme, M.R.; Reis, A.V.; Alves, B.R.V.; Kunita, M.H.; Rubira, A.F.; Tambourgi, E.B. Journal of Colloid and Interface Science, 352 (2010), 107-113. ISSN: 0021-9797. doi:10.1016/j.jcis.2010.08.051 Smart hollow microspheres composed of vinyled-chondroitin sulfate conjugates (CSπ) and magnetite nanoparticles were obtained by the intermediate of a multiple emulsion in absence of a surfactant, attributable to stabilizing properties of the CS. It was formed an oil-water multiple emulsion in which the

Boletim da FEQ Página 11CS played a role as an anionic stabilizer for magnetite nanoparticles via complexation. Iron oxides were bonded to the microspheres by the formation of an electrostatic complex of Fe3+ ions on the crystalline phase with oxygen atoms at the carboxyl groups without their magnetic properties being affected. The average crystal size of embedded magnetite nanoparticles was approximately 16.5 nm, indicative of a good dispersion in microspheres. Furthermore, the introduction of iron oxides resulted in microspheres with a higher diameter and a narrower particle size distribution. Characterization of the selectivity of microsieves using a cross-flow microfiltration system Gutierrez-Rivera, L.E.; Katekawa, M.E.; Silva, M.A.; Cescato, L. Brazilian Journal of Chemical Engineering, 27 (2010), 677-685. ISSN: 0104-6632. doi:10.1590/S0104-66322010000400019 Filtration through membranes is a process largely employed in the food and chemical industry to separate particles. Sieves present some advantages in relation to conventional membranes such as high homogeneity in the pore sizes, smooth surfaces, straight-through pores, etc. In this paper we compare the selectivity in the exclusion of particles by size of sieves with circular and slit pores with the same porosity. The selectivity was investigated by filtering a mixture of rutin in water in a cross-flow filtration system. The particle-size distribution of the rutin solution was measured before and after microfiltration. The results showed a high efficiency in the size exclusion of particles for microsieves with circular pores. The filtration through a commercial membrane (net filter) with similar characteristics was also characterized for comparison. Characterization and evaluation of copper and nickel biosorption on acidic algae Sargassum filipendula Kleinübing, S.J.; Vieira, R.S.; Beppu, M.M.; Guibal, E.; Silva, M.G.C. Materials Research, 13 (2010), 541-550. ISSN: 1516-1439. doi:10.1590/S1516-14392010000400018 The marine algae Sargassum filipendula was collected from São Paulo seashore (Brazil) and submitted to treatment with acid. The biosorption mechanisms of Cu2+ and Ni2+ ions onto acidic algae Sargassum filipendula were examined using various analytical techniques: Fourier-transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and potentiometric titration (pHZPC). The effect of acidic treatment on algae by hydrochloric acid (pH 2.0, 3.0, 4.0 and 5.0) was evaluated for Cu2+ and Ni2+ adsorption. Alginate was extracted from raw algae and the two types of acids present in the biomass (β-D-mannuronic (M) and α-L-guluronic (G) acid) were characterized by 13C NMR. The M/G ratio was found to be 0.50. According to the pHZPC analysis, at a pH higher than 5.5 the acidified algae surface presents a negative charge. The FT-IR analyses showed that the main chemical groups involved in the biosorption were carboxylic, alcoholic, sulfonate and amino groups. Online intelligent controllers for an enzyme recovery plant: design methodology and performance Leite, M.S.; Fujiki, T.L.; Silva, F.V.; Fileti, A.M.F. Enzyme Research, (2010), Article ID 250843, 13 pages. ISSN: 2090-0414. doi:10.4061/2010/250843 This paper focuses on the development of intelligent controllers for use in a process of enzyme recovery from pineapple rind. The proteolytic enzyme bromelain (EC 3.4.22.4) is precipitated with alcohol at low temperature in a fed-batch jacketed tank. Temperature control is crucial to avoid irreversible protein denaturation. Fuzzy or neural controllers offer a way of implementing solutions that cover dynamic and nonlinear processes. The design methodology and a comparative study on the performance of fuzzy-PI, neurofuzzy, and neural network intelligent controllers are presented. To tune the fuzzy PI Mamdani controller, various universes of discourse, rule bases, and membership function support sets were tested. A neurofuzzy inference system (ANFIS), based on Takagi-Sugeno rules, and a model predictive controller, based on neural modeling, were developed and tested as well. Using a Fieldbus network architecture, a coolant variable speed pump was driven by the controllers. The experimental results show the effectiveness of fuzzy controllers in comparison to the neural predictive control. The fuzzy PI controller exhibited a reduced error parameter (ITAE), lower power consumption, and better recovery of enzyme activity. Modeling of heat transfer between particles and gas in a fluidized bed Mitrofanov, A.V.; Ogurtzov, A.V.; Mizonov, V.E.; Tannous, K. Khimiya I Khimicheskaya Tekhnologiya, 53 (2010), 110-112. ISSN: 0579-2991. http://ctj.isuct.ru/files/2010/v53_n12_2010_abstracts_en.pdf A cell mathematical model of heat transfer between particulate phase and gas in a fluidized bed has been proposed. The model consists of two parallel chains of cells for particles and for gas with mutual influence

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of transition probabilities to each other in similar cells. Besides that, the similar cells can exchange with heat at each time transition by means of heat transfer. Some results of calculation of particulate heating up with the gas are shown. Estudo de viabilidade da secagem da biomassa da banana verde em spray dryer rotativo Oi, R.K.; Tambourgi, E.B.; Moraes Jr., D. Exacta, 8 (2010), 185-191. ISSN: 1983-9308. http://www4.uninove.br/ojs/index.php/exacta/article/view/2057 O presente trabalho apresenta um estudo de viabilidade técnica de secagem da biomassa da banana verde em uma unidade piloto de spray dryer com atomizador rotativo. A biomassa da banana verde é um componente que pode ser utilizado industrialmente em uma grande variedade de alimentos, apresentando propriedades funcionais, sobretudo pela presença do amido resistente. As variáveis selecionadas no procedimento experimental foram concentração da biomassa da banana verde, vazão de alimentação e rotação do atomizador. Como respostas foram obtidas a massa e a umidade relativa do produto seco. Três níveis foram utilizados nas variáveis selecionadas, o que correspondeu à realização de 27 ensaios. Nos ensaios no qual foram obtidos os menores valores de umidade relativa, as quantidades de massa também foram as mais baixas, enquanto nos ensaios em que se encontraram as maiores quantidades de massa os teores de umidade relativa situaram-se entre os mais elevados. Tendo em vista a aplicação industrial, cujo objetivo é o baixo nível de umidade e a maior produção do produto, o ensaio 22 foi o mais adequado, sendo encontrados 11 % de umidade e 4,33 g de massa. Partição da lipase de Burkholderia cepacia em sistema bifásico aquoso PEG 4000/fosfato Padilha, G.S.; Monte Alegre, R.; Tambourgi, E.B. Exacta, 8 (2010), 193-199. ISSN: 1983-9308. http://www4.uninove.br/ojs/index.php/exacta/article/view/2072 Este trabalho teve como objetivo mostrar como purificar a lipase de Burkholderia cepacia com o uso do sistema bifásico aquoso (SBA) PEG4000/fosfato. Esse sistema é baseado no equilíbrio do polietileno glicol e sal fosfato. Um planejamento fatorial 22 foi usado para avaliar o efeito do pH (6, 7 e 8) e linhas de amarração (concentração de equilíbrio entre o PEG e sal fosfato) no coeficiente de partição. O volume total do sistema foi de 7 mL. A lipase foi obtida a partir de meio com óleo de soja por fermentação usando a cepa de Burkholderia cepacia. A combinação dos melhores dados otimizados de coeficiente de partição apresentou o SBA PEG 4000/fosfato a pH 8 como o melhor sistema a ser utilizado na purificação da lipase. The influence of mineral ions on the microbial production and molecular weight of hyaluronic acid Pires, A.M.B.; Eguchi, S.Y.; Santana, M.H.A. Applied Biochemistry and Biotechnology, 162 (2010), 2125-2135. ISSN: 1599-0291. doi:10.1007/s12010-010-8987-z This study aimed to evaluate the influence of the culture medium supplementation with mineral ions, focusing on the growth of Streptococcus zooepidemicus as well as on the production and average molecular weight (MW) of hyaluronic acid (HA). The ions were investigated in terms of individual absence from the totally supplemented medium (C+) or individual presence in the non-supplemented medium (C−), where C+ and C− were used as controls. Differences between the effects were analyzed using the Tukey's test at p < 0.05. The adopted criteria considered required the ions, whose individual absence attained at 80% or less of the C+ and their individual presence was 20% or more than the C−. The supplementation was either inhibitory or acted in synergy with other ions, when the individual absence or presence was 20% higher than C+ or 20% lower than C−, respectively. Results showed that the effects of C+ or C− were equal for both the production of HA and its yield from glucose. However, C+ showed to be beneficial to cell growth while the individual absence of Na+ was beneficial to the production of HA. The highest MW of HA (7.4 × 107 Da) was observed in the individual presence of Na+ in spite of the lowest HA concentration (0.65 g.L−1). These results suggest that the quality of HA can be modulated through the mineral ion supplementation. Metallic oxides as fire retardants and smoke suppressants in flexible poly(vinyl chloride) Rodolfo Jr., A.; Innocentini Mei, L.H. Journal of Applied Polymer Science, 118 (2010), 2613-2623. ISSN: 1097-4628. doi:10.1002/app.32596 Combustion and smoke emission properties of PVC compounds, modified with copper (II), molybdenum, and zinc oxides, were studied using cone calorimeter, limiting oxygen index (LOI) and thermogravimetry coupled with mass spectrometry (TG/MS). Results showed that the metal oxides have a very significant effect on the combustion and smoke suppression properties of the PVC compounds. The results also confirmed the anticipation mechanisms of the dehydrochlorination reactions, reductive coupling, and

Boletim da FEQ Página 13elimination of benzene resulting from the presence of copper (II), molybdenum, and zinc, indicated by the increasing content of postcombustion char residue and the significant reduction in benzene production, indicated by the MS measurements performed. The results also provide indications that the combination of the copper (II) and molybdenum oxides is the one with the best balance of combustion properties, as it reduced the heat released and promoted the suppression of smoke more efficiently. The formulations containing ZnO, because of their strong Lewis acid character, indicated a less pronounced reduction of smoke released during the combustion process, when compared with copper (II) and molybdenum oxides. Bacteriological elimination in sewage sludge through direct flow convective drying Serenotti, F.; Vieira, M.G.A.; Silva, M.G.C.; Pisani, B.; Simões, M.; Prandi, M.A.G. Environmental Progress & Sustainable Energy, 29 (2010), 406-414. ISSN: 1944-7450. doi:10.1002/ep.10421 Sewage sludge, one of the main components of the wastewater generated worldwide, is a residue with high moisture content. Because thermal drying allows volume reduction and microbiological inactivation, its use can be considered a powerful tool in the environmental area. The purpose of this study was to assess the drying process conducted with an upflow direct convection dryer for bacteriological disinfection by verifying the microorganisms E. coli and Salmonella spp, prior to and following the drying process. The study suggested that the most favorable drying condition occurred at the temperature of 140C and flow of 0.4 kg/min, while all the conditions applied to disinfection were also efficient, since the sludge was exposed to a temperature equal to or above 60C for more than 1 h in all the conditions, which exceeds the exposure time recommended for the death of the bacteria aforementioned. Design of automatic control for the precipitation of bromelain from the extract of pineapple wastes Silva, F.V.; Santos, R.L.A.; Leite, M.S.; Fujiki, T.L.; Fileti, A.M.F. Ciência e Tecnologia de Alimentos, 30 (2010), 1033-1040. ISSN: 0101-2061. doi:10.1590/S0101-20612010000400031 In this work, bromelain was recovered from ground pineapple stem and rind by means of precipitation with alcohol at low temperature. Bromelain is the name of a group of powerful protein-digesting, or proteolytic, enzymes that are particularly useful for reducing muscle and tissue inflammation and as a digestive aid. Temperature control is crucial to avoid irreversible protein denaturation and consequently to improve the quality of the enzyme recovered. The process was carried out alternatively in two fed-batch pilot tanks: a glass tank and a stainless steel tank. Aliquots containing 100 mL of pineapple aqueous extract were fed into the tank. Inside the jacketed tank, the protein was exposed to unsteady operating conditions during the addition of the precipitating agent (ethanol 99.5%) because the dilution ratio “aqueous extract to ethanol” and heat transfer area changed. The coolant flow rate was manipulated through a variable speed pump. Fine tuned conventional and adaptive PID controllers were on-line implemented using a fieldbus digital control system. The processing performance efficiency was enhanced and so was the quality (enzyme activity) of the product. Drying of sodium acetate in a pulsed fluid bed dryer Souza, L.F.G.; Nitz, M.; Lima, P.A.; Taranto, O.P. Chemical Engineering & Technology, 33 (2010), 2015-2020. ISSN: 1521-4125. doi:10.1002/ceat.200900565 Sodium acetate crystals obtained from the reaction of acetic acid with sodium hydroxide are usually dried in rotary or fluidized beds. In this study, a batch pulsed fluid bed dryer with a 0.18 m2 cross-sectional area was used in an attempt to reduce energy consumption and increase productivity. Drying curves of sodium acetate were determined for different conditions: inlet air temperature of 65 and 80C and pulsation frequency of 0 rpm (conventional fluidized bed), 500 and 900 rpm (pulsed fluid bed). A 22 factorial design was used to analyze the results. The intermittent flow helped to break agglomerates and provided better contact between particles and the gas. Drying rates were higher under pulsed fluidization when compared to conventional fluidization. Conventional fluidized bed drying consumed 2.5 times more energy at 80C. The influence of temperature on the drying rate was also evident.

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Teses e Dissertações

Outubro - Dezembro 2010 Mestrado: 847. Melissa Tatiana Andreuccetti. Caracterização do licor negro de eucalipto na etapa de evaporação e correlação de suas propriedades. Orientador: Prof. Dr. José Vicente Hallak d’Angelo. Data: 01/10/2010. 848. Carolina Macias Macias. Projeto e construção de um reator para produção de nanoestruturas de carbono. síntese e caracterização de esferas de carbono produzidas a partir de resíduo da destilação molecular de petróleo. Orientador: Prof. Dr. Rubens Maciel Filho e Dr. André Luiz Jardini Munhoz (FEQ). Data: 06/10/2010. 849. Katlen Allganer. Emissões de CO2 como parâmetro da avaliação do ciclo de vida do amido de milho plastificado com glicerol destinado à compostagem. Orientador: Profa. Dra. Lúcia Helena Innocentini Mei. Data: 05/10/2010. 850. Alan Henrique da Silva. Estudos de adsorção de ácidos orgânicos visando sua recuperação de meios fermentados. Orientador: Prof. Dr. Everson Alves Miranda. Data: 08/10/2010. 851. Matheus Maciel Batista. Determinação dos parâmetros de solubilidade de Hansen de ésteres graxos etílicos. Orientadores: Profa. Dra. Maria Alvina Krähenbühl e Prof. Dr. Reginaldo Guirardello. Data: 13/10/2010. 852. Absolon Carvalho da Silva Jr. Separação cromatográfica quiral do o,p’-diclorodifenildicloroetano (mitotano) em fase estacionária quiral tris-3-cloro-4-metilfenilcarbamato de celulose e tris-3,5 dimetilfenilcarmato de amilose. Orientador: Prof. Dr. Cesar Costapinto Santana. Data: 12/10/2010. 853. Carlos Henrique Gimenes Scoparo. Remoção de CO2 em fotobiorreatores utilizando efluentes petroquímicos. Orientador: Profa. Dra. Telma Teixeira Franco. Data: 19/11/2010. 854. Ana Letícia Monteiro Olino. Otimização do impelidor KPC utilizando fluidodinâmica computacional (CFD). Orientador: Prof. Dr. José Roberto Nunhez. Data: 09/12/2010. 855. Cristina Martins de Moraes. Estudo da difusão de corantes reativos em tecido de algodão. Orientador: Prof. Dr. Sergio Persio Ravagnani. Data: 19/12/2010. 856. Rosemeire dos Santos Almeida. Influência da velocidade de rotação no processo de extrusão do polipropileno virgem e reciclado. Orientador: Prof. Dr. João Sinézio de Carvalho Campos. Data: 15/12/2010 Doutorado: 443. Denise Silva de Aquino. Esterificação enzimática para síntese de acrilato de sacarose. Orientadores: Profa. Dra. Telma Teixeira Franco e Prof. Dr. Gustavo Paim Valença. Data: 18/10/2010. 444. Ana Elisa Lavezo. Estudo do Processo de Difusão em Resinas Dentárias. Orientador: Prof. Dr. Sergio Persio Ravagnani. Data: 23/11/2010. 445. Rodrigo Alvarenga Rezende. Desenvolvimento de processos para a aplicação do alginato na biofabricação. Orientador: Prof. Dr. Rubens Maciel Filho. Data: 07/12/2010.

Boletim da FEQ Página 15 446. Viktor Oswaldo Cárdenas Concha. Estudo experimental e modelagem matemática da separação de asfaltenos e óleos lubrificantes provenientes do resíduo de petróleo por desasfaltação supercrítica. Orientador: Prof. Dr. Rubens Maciel Filho. Data: 07/12/2010. 447. Márcio Wagner da Silva. Efeitos da adição de metais básicos aos catalizadores à base de Pd e Ru para a hidrodescloração do pentaclorofenol. Orientadores: Prof. Dr. Antonio Jose Gomez Cobo e Dr. Antonio Guerrero Ruiz. Data: 10/12/2010. 448. Nádson Murilo Nascimento Lima. Desenvolvimento e análise de controle híbrido preditivo por lógica fuzzy de processos de polimerização. Orientador: Prof. Dr. Rubens Maciel Filho. Data: 13/12/2010. 449. Alex Barreto Machado. Caracterização de sistemas envolvidos nos processos de purificação de biodiesel. Orientadores: Profa. Dra. Maria Regina Wolf Maciel e Prof. Dr. Martín Aznar. Data: 15/12/2010. 450. Luciana Yumi Akisawa Silva. Determinação experimental de dados de pressão de vapor e de equilíbrio líquido-vapor de componentes do biodiesel através da calorimetria exploratória diferencial. Orientador: Profa. Dra. Maria Alvina Krähenbühl. Data: 15/12/2010 451. Igor Tadeu Lazzarotto Bresolin. Agentes quelantes de IMAC e poliaminas como grupos ionogênicos para a purificação de IgG humana por cromatografia. Orientador: Profa. Dra. Sônia Maria Alves Bueno. Data: 16/12/2010. 452. Ana Cláudia Ueda. Estudo de compostos orgânicos voláteis na atmosfera da Região Metropolitana de Campinas. Orientador: Prof. Dr. Edson Tomaz. Data: 17/12/2010.

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Patentes Depositadas/Concedidas 2010 Sensor biodegradável contendo indicadores de H2S e processo de preparo do mesmo. Telma Teixeira Franco, Maria Cristina Pedroso Yoshida, Edison Tutomu Kato Jr. Protocolo 18100044199. Processo de tratamento e obtenção de óleos lubrificantes, lubrificantes especiais e óleos térmicos e uso do referido processo. Rubens Maciel Filho, Maria Regina Wolf Maciel, Paula Sbaite Duarte dos Santos e César Benedito Batistella. Protocolo 18100039974. Membrana de quitosana e alginato incorporando fármacos. Ângela Maria Moraes, Ana Kelly Girata, Ana Paula Rodrigues, Cecília Zorzi Bueno e Nesser Cristiano de Paula Oliveira. Co-Titular: LM Farma (temporário). Protocolo 18100039110. Processo de obtenção de lentes oftálmicas, lentes oftálmicas produzidas pelo referido processo e uso das mesmas. Edison Bittencourt e Zaida Jova Águila. Protocolo 18100038912. Sistema integrado para produção de acetato de etila e etanol anidro, processo integrado de obtenção de acetato de etila e etanol anidro e produto obtido pelo mesmo. Rubens Maciel Filho e Maria Cristina de Araújo. Protocolo 18100031621. Método e processo de obtenção de fibras de nanocelulose, fibras de nanocelulose e uso das mesmas. Edison Bittencourt e Marcelo de Camargo. Protocolo 18100028692. Processo de secagem de biomassa residuária por condução e agitação via contato indireto, produto obtido e usos. Marco Aurélio Cremasco e Kiki Pinheiro Melo. Protocolo 18100025328. Processo de produção de etanol a partir da hidrólise enzimática de biomassa, processo de separação da matéria-prima de hidrólise e uso de células de parênquima para obtenção de etanol. Maria Aparecida Silva, Francisco Maugeri Filho e Fátima Aparecida de Almeida Costa. Protocolo 18100025329.

Softwares Depositados/Registrados 2010 SIMCRIS. Caliane Bastos Borba Costa e Rubens Maciel Filho. Registro 88966. Fortran 90/Windows. Software de simulação de processos de cristalização, com aplicação em universidades e indústrias farmacêuticas, de alimentos, fertilizantes e petroquímica. SIMBIOBUT. Adriano Pinto Mariano e Rubens Maciel Filho. Registro 88954. Fortran 90/Windows. Software de simulação e projeto de processos, com aplicação em universidades e indústrias de biocombustíveis.

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Notas curtas

Prêmio Inventor 2010 No dia 19 de novembro, a professora Lúcia Helena Innocentini Mei e seu orientando Gustavo Spina de Almeida receberam, junto com outros pesquisadores de diversas instituições, o Prêmio Inventor 2010, concedido pela Petrobrás a pesquisadores destacados pelo desenvolvimento de tecnologias inovadoras, objetos de depósito de patente. O invento que deu o prêmio aos pesquisadores da FEQ e que contou com o apoio da Petrobras foi um polímero parcialmente biodegradável. De acordo com a professora Lúcia Mei, uma nova pesquisa está sendo desenvolvida com o objetivo de aprimorar o plástico. “O estudo está caminhando muito bem. Nossa expectativa é que futuramente consigamos transferir a tecnologia para a empresa. Afinal, a busca por produtos que impliquem em menor agressão ao meio ambiente é uma tendência crescente em todo o mundo”, afirma. A professora Lúcia classificou o prêmio como estimulante. “É um importante reconhecimento ao nosso trabalho. É gratificante saber que estamos contribuindo de algum modo para o avanço da ciência brasileira e o desenvolvimento do país”.

No dia 9 de dezembro, o professor Moacir Bufo foi homenageado pelo Conselho Regional de Engenharia, Arquitetura e Agronomia do Estado de São Paulo, CREA-SP, com o Diploma de Mérito pelos relevantes trabalhos desenvolvidos na área tecnológica. Palestras na FEQ Duas palestras foram apresentadas em novembro como parte integrante da disciplina de pós-graduação IQ 218, Introdução aos Processos com Membranas, sob responsabilidade da professora Leila Peres: 22/11, Eng. Sérgio Ribeiro (Koch)

“Biorreatores com Membranas: Puron–Koch Membrane Systems”

29/11, Eng. Ricardo Pinheiro (Norit) “Aspectos técnicos da ultrafiltração e as

aplicações de membranas Norit no tratamento de águas e efluentes”

No dia 25 de novembro, o Dr. Domingo Sánchez (EKA Chemicals, Suécia), apresentou a palestra “Optimization of Chiral Separations in Preparative Scale”. A visita do Dr. Sánchez foi organizada pelo professor Cesar Santana.

Nos dias 23 e 25 de novembro, o Prof. Dr. Diego Mantovani, da Université Laval (Canada), ministrou os seminários “Biomaterials for Organs Replacement and Tissue Engineering” e “Functional Nanocoatings, Degradable Metallic Implants,

and Vascular Tissue Engineering: Needs for High-Performance Vascular Biomaterials”. A visita do professor Mantovani foi organizada pela professora Marisa Beppu. Fibra inteligente e proteção ultravioleta A pesquisa de doutorado do engenheiro têxtil Fernando Gasi, orientado pelo professor Edison Bittencourt, do Departamento de Tecnologia de Polímeros, foi matéria do Jornal da UNICAMP n 482. O tema abordado é o desenvolvimento de novos produtos têxteis para atletas que praticam atividades esportivas de alto rendimento, sobretudo as malhas sintéticas de microfibras em misturas com elastano, produzidas em máquinas finas, que utilizam 36-38 agulhas por polegada. Devido a vários fatores, entre os quais se destaca o conforto proporcionado ao usuário, essas malhas têm alta aceitação no mercado. A fim de avaliar o comportamento desses artigos com diferentes fibras, especialmente poliamida e poliéster, Fernando focou sua pesquisa em aspectos como permeabilidade ao vapor, capilaridade e proteção ultravioleta. De acordo com ele, os resultados obtidos dependem tanto do tipo de fibra como da estrutura da malha. “Existe, de fato, uma superioridade do tecido de malha de poliamida em relação ao poliéster, nas três propriedades analisadas”, garante.

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No que diz respeito às propriedades, inicialmente, durante uma atividade física ou mesmo numa leve caminhada, a umidade da pele passará pelos poros do tecido em forma de vapor – daí a importância em medir-se a permeabilidade ao vapor do tecido. Porém, se a atividade física se torna mais intensa, tem-se a dissipação da umidade da pele em forma líquida e de vapor. “É nesse instante que a propriedade da capilaridade torna-se importante, por que ela avalia a capacidade de um tecido transportar líquido ao longo da sua estrutura”, afirmou Gasi. Já com relação à questão da proteção ultravioleta, o engenheiro adiantou que, em razão das propriedades das fibras, ele elegeu duas matérias-primas sintéticas: a poliamida e o poliéster. Tanto uma quanto outra permitem uma proteção maior que a fibra natural encontrada no algodão, principalmente em função da característica da fibra. Para realizar essa medição, o pesquisador utilizou como escala uma norma australiana chamada de “fator de proteção ultravioleta”. Essa norma surgiu como medida preventiva para os altos índices de casos de câncer de pele que ocorriam naquela região e atualmente é utilizada no mundo todo.

Acerca das possíveis mudanças de comportamento que essa pesquisa possa ocasionar na indústria têxtil, o pesquisador acredita que já estejam em curso, uma vez que é perceptível que o consumidor de material esportivo está cada vez mais exigente. Quando o atleta sai para comprar um produto para uma determinada atividade esportiva, o que ele quer saber é se o tecido proporciona troca de calor com o meio ambiente, se ele tem secagem rápida e se possui algum outro benefício a mais. “Se a gente percebe que o planeta está cada vez mais quente e que as pessoas cada vez mais têm que se proteger das radiações solares, eu não tenho dúvida que esse é um atributo importante. É essa a mudança que a gente percebe no comportamento”. Questionado a respeito do ineditismo de sua pesquisa, o engenheiro têxtil foi enfático ao afirmar que desconhece estudo igual ao seu, que mostra as curvas de absorção comparando estruturas com a mesma cobertura e densidade de tecido em várias regulagens, com tensão e sem tensão.

A Editora Edgar Blücher lançou as versões em inglês e em português do livro Bioetanol de Cana-de-Açúcar – P&D para Produtividade e Sustentabilidade, ISBN: 978-85-212-0531-9 (Sugarcane Bioethanol – R&D for Productivity and Sustainability, ISBN: 978-85-212-0530-2), organizados pelo Prof. Luis Augusto Barbosa Cortez, da Faculdade de Engenharia Agrícola da UNICAMP. Os dois livros contam com a participação da professora Katia Tannous, do Departamento de Termofluidodinâmica, autora, junto com o pesquisador Vadson Bastos do Carmo, do capítulo “Integrando Competências Essenciais para a Biorrefinaria Sucroalcoolquímica” (“Integrating Essential Competencies for Sugar-Alcohol-Chemical Biorefineries”). A obra é uma coletânea de textos escritos a partir dos workshops do Projeto de Políticas Públicas Etanol da FAPESP e também de autores convidados pela relevância de suas pesquisas a respeito do tema etanol. A discussão é fundamental no importante momento mundial em que a cana-de-açúcar é foco de interesse como base para obtenção de combustíveis líquidos, bioprodutos e bioeletricidade. A publicação do livro nas versões em português e em inglês traduz uma realização compartilhada com a comunidade científica ligada à cana-de-açúcar, geradora de inovações humanas e tecnológicas.

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Informe COBEQ/EBA/CBTermo 2010 Profa. Dra. Meuris Gurgel Carlos da Silva

O XVIII Congresso Brasileiro de Engenharia Química, COBEQ 2010, foi realizado simultaneamente com o V Congresso Brasileiro de Termodinâmica Aplicada, CBTermo, a exemplo das quatro edições anteriores e, em caráter experimental, abrigou o 8º Encontro Brasileiro de Adsorção, EBA 2010. O COBEQ/EBA/CBTermo 2010 foi realizado de 19 a 22 de setembro de 2010, na cidade de Foz do Iguaçu - PR. O evento foi coordenado pelos professores doutores Marcelino Luiz Gimenes (UEM/DEQ) e Meuris Gurgel Carlos da Silva (UNICAMP/FEQ), e teve como promotora a Associação Brasileira de Engenharia Química (ABEQ). O evento contou com a participação de 12 palestrantes do Brasil e do exterior, todos reconhecidos pela excelência de seus trabalhos de interesse para a engenharia química e áreas correlatas. Junto aos pesquisadores estiveram docentes, profissionais de indústrias, alunos de pós-graduação e de graduação. Todos os números alcançados foram superlativos, a começar pelos 1305 trabalhos publicados nos anais deste evento. A Comissão Organizadora foi formada, na sua maioria, por docentes/pesquisadores da engenharia química oriundos de diversas instituições de ensino. A base da organização foi o seu Comitê Executivo, constituído por professores das duas instituições organizadoras, UEM e UNICAMP. Foram constituídos nove Comitês Científicos por área temática de pesquisa para o COBEQ e um Comitê Científico para cada evento paralelo. Estes Comitês foram coordenados por um pesquisador de destacada atuação na área em tela e contaram com uma Presidência Geral para garantir uma avaliação unificada. As composições da Comissão Organizadora, dos Comitês Científicos e da secretarias de apoio estão relacionadas no site oficial (http://www.cobeq2010.com.br/cobeq2010.php). O quadro 1 apresenta os números de participantes e o quadro 2 apresenta os números relativos as submissões de trabalhos nesta edição do evento.

Número de participantes inscritos no evento Professores/Pesquisadores 463 Profissionais 24 Empresas 5 Alunos Pós-Graduação 496 Alunos Graduação 201 Total 1189

Números relativos aos resumos e trabalhos completos do evento Resumos submetidos 2055 Resumos aceitos 1949 Trabalhos submetidos 1508 Trabalhos aceitos 1386 Trabalhos publicados 1305

Trabalhos apresentados Oral 235

1256 Poster 1021

As Figuras 1 e 2 apresentam uma avaliação da distribuição dos trabalhos por evento e por área temática.

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Figura 1 - Distribuição de trabalhos por evento

Figura 2 - Distribuição de trabalhos por área temática

As Figuras 3 e 4 mostram o perfil dos participantes inscritos por categoria (titulação informada pelo inscrito) de inscrição, por região do apresentador.

Figura 3 - Participantes por categoria de inscrição

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Figura 4 - Distribuição de trabalhos por região do apresentador

A programação final e os resumos dos trabalhos publicados constam do livro de programação e os trabalhos completos do COBEQ/EBA/CBTermo 2010 constam nos anais em CD. Os gastos envolvidos na organização do evento foram apoiados pelo CNPq, CAPES, Petrobrás, Fundação Araucária, CRQ-IV e arrecadação das inscrições. Além de apoio de fundações estaduais, como a FAPESP e FAPEMIG, que financiaram parte dos custos para participação de um número significativo de pesquisadores oriundos dos estados destas fundações. O evento ocorreu de acordo com a programação, que foi cumprida sem falhas, havendo muito pouco no-show. Em conjunto, os três eventos formaram, sem dúvida, o maior evento de Engenharia Química já realizado no Brasil, o que pode ser confirmado pelo número recorde de participantes 1398 e de trabalhos completos publicados (1305) e apresentados (1256). Além disso, a organização conjunta de duas Instituições de renome, UEM e UNICAMP, com certeza contribuiu para o sucesso do evento. Esta excelente parceria pode ser um indicador de que o próximo evento, que será também uma organização conjunta de várias instituições do Rio de Janeiro, tendo a frente a UFRJ, poderá superar os números desta edição do COBEQ, fortalecendo ainda mais a Engenharia Química no cenário nacional. Portanto, a avaliação da Comissão Organizadora do COBEQ/EBA/CBTermo 2010 é de que os objetivos foram plenamente alcançados e, de que o evento apresentou, sem dúvida, um elevado nível técnico/científico e de organização, conforme já manifestado a nós por muitos participantes. Mas, com certeza, o sucesso deste evento deve ser principalmente atribuído aos participantes que se fizeram presentes e que souberam aproveitar para trocar de experienciais, realizarem discussões técnicas e para estabelecer interações e parcerias entre as diferentes instituições, centros de pesquisa e empresas nacionais e internacionais.