Mass Transfer Controlled Process
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Tratamiento de efluentes acuosos provenientes de la industria de biodiesel, utilizando tecnología de membranas
ABSTRACT The wastewaters from biodiesel production are generated mainly in the washing process, in this step the contaminants of biodiesel are eliminated in order to the obtained biodiesel meets with the internationals regulations. These wastes contain impurities such as methyl ester, residual oil, mono and diglycerides, soluble salts, catalyst, soap, glycer
Matéria (Rio J.). Publicado em: 19/07/2018
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2. Prediction of moisture transfer parameters for convective drying of shrimp at different pretreatments
Abstract By the analytical model proposed by Dincer and Dost, the mass transfer parameters (moisture transfer coefficient and moisture diffusivity) of shrimp samples were determined. Three sets of drying experiments were performed with three samples of shrimp: without boiling (WB), boiled in salt solution (SB) and boiled in salt solution and subjected to li
Food Sci. Technol. Publicado em: 19/04/2018
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3. Electrodeposition of Gold Films from a Glycerol Solution on Carbon Paste Electrode and the Effect of Chemical and Electrochemical Parameters of Electrodeposition on the Electrode Performance in Potassium Ferrocyanide Solution
The gold electrodeposition process from a glycerol solution on a carbon paste electrode (CPE) was investigated by voltammetry and the morphologies of the electrodeposits were analyzed by scanning electron microscopy (SEM). Voltammetric study indicated that AuCl4− was reduced to Au0 and the process was mixed controlled (mass transport and electron transfer)
J. Braz. Chem. Soc.. Publicado em: 2017-01
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4. A economia no andar de baixo: ascender ou acender perspectivas de pertencimento criadas a partir da renda das pessoas - uma análise do programa de microcrédito do Banco do Povo no município de Sorocaba, SP
The question of income is confirmed as a means of survival, which in its full manifestation is established by consumption. An income that can be obtained for work done and paid, the transfer and redistribution between social classes and the credit granted in anticipation of the value of future income. Experiments on redistribution and income transfers provid
Publicado em: 2010
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5. EletrodeposiÃÃo de chumbo sobre Carbono VÃtreo, em sistema Ãcido, Alcalino e com a influÃncia do Etileno Glicol
The electrodeposition of lead, on glassy carbon, from acid (HBF4) and alkaline media (KOH) and on the influence of the ethylene glycol, in concentration varied, has been studied by technique electrochemistry as it has been studied by technique electrochemistry as: cyclic voltammetry, chronoamperometry, while cyclic voltammetry was used to characterize the sy
Publicado em: 2008
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6. Avaliação dos efeitos da injeção de gás na câmara de vácuo do modelo físico de um desgaseificador RH
Steels with low concentrations of nitrogen, hydrogen and carbon have in large demand lately. The RH process is a secondary refining process that can simultaneously attain significant levels of removal of these interstitial elements from liquid steel. In the RH process, the melt circulation rate plays a very important role in determining productivity of the e
Publicado em: 2008
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7. Study of breathing activity of wild and transfected line of insect cells through cultivations in bioreactors. / Estudo da atividade respiratória de linhagens selvagens e transfectadas de células de insetos através de cultivos em biorreatores.
Specific respiration rate (QO2) is a key parameter to understand cell metabolism and physiological state, providing useful information for process supervision and control. In this work, we cultivated different insect cells in a very controlled environment, being able to measure QO2 and critical oxygen concentration (Ccrit). Wild Spodoptera frugiperda (Sf9) a
Publicado em: 2007
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8. ESTUDO DO COMPORTAMENTO METALÚRGICO DO REATOR KAMBARA ATRAVÉS DE MODELAGEM FÍSICA
The quality requirements of many steel grades are becoming increasingly important due to demand of alloys for sophisticated applications. The sulfur and phosphorus contents of steel grades have become stringent. Sulfur is undesirable except for machinability applications. The tolerance limit for sulfur content is around 50 ppm maximum in the case of many app
Publicado em: 2006
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9. Eletroxidação de cloranfenicol e outros poluentes organicos utilizando reatores eletroquimicos, constituidos de anodos tipo DSA ou de diamante dopado com boro (DDB) / Electrooxidation of chloramphenicol and otherpollutants using electrochemical reactors composed with a DSA type anode or a boron-doped diamond anode
O método de oxidação eletroquímica foi aplicado a soluções aquosas contendo cloranfenicol (CAP) e outros compostos orgânicos. Para isso, utilizou-se um anodo de óxido condutor, comercial, tipo DSA®, de composição 70TiO2-30RuO2 e um anodo de diamante dopado com boro (DDB) tipo comercial. Cada anodo foi instalado em um reator tipo filtro-presa, em e
Publicado em: 2005
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10. Estudo da sintese e hidrolise de acetato de etila em fase gasosa catalisada por enzimas suportadas
Enzymes supported in a solid phase catalyzing reactions with substrates and products in gaseous phase constitute a recent progress in the biotechnology. It has technological applications that include: toxic gas remediation, biosensors and synthesis of pharmaceutical, fragrances and aromas for the food industry and cosmetics. This work presents, the experimen
Publicado em: 2002
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11. Considerações sobre a eletrogeração de peróxido de hidrogênio
This paper presents some results that may be used as previous considerations to a hydrogen peroxide electrogeneration process design. A kinetic study of oxygen dissolution in aqueous solution is carried out and rate constants for oxygen dissolution are calculated. Voltammetric experiments on vitreous carbon cathode shown that the low saturation concentration
Química Nova. Publicado em: 2001-04
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12. Desenvolvimento e otimização de reatores com eletrodos tridimensionais para eletrogeração de H2O2
This work reports a study on a process for the electrogeneration of hydrogen peroxide. Two types of electrochemical reactors. using three-dimensional porous electrodes. with a reticulated structure. were used. In both systems the performance the reactors. during the hydrogen peroxide production was investigated. as a function of applied potential. flow rate
Publicado em: 2001