Industrial Recycle
Mostrando 13-23 de 23 artigos, teses e dissertações.
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13. Estudo e projeto de reatores fotoquimicos para tratamento de efluentes liquidos / Study and design of photochemical reactors to treat liquid effluents
Wasterwater treatment has become a fundamental stage of industrial processes. Most wastewater treatment are currently based on biological processes. However, some types of wastewater cannot be treated by such processes due to the fact of possessing toxic. Therefore, the Advanced Oxidation Process (AOP) can be used with success in such wastewater remediation.
Publicado em: 2005
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14. Utilização de resíduos da indústria de calçados em blocos de vedação com novas geometrias - Bloco Evang / Recycling of residues from the footwears industry for alternative masonry blocks with a new geometry - Evang Block
A geração de resíduos de E.V.A. (Etileno Acetato de Vinila) pela indústria calçadista tem se constituído num problema para o setor e, ao mesmo tempo, tem despertado a atenção de pesquisadores para a reciclagem desses resíduos pela construção civil. Sabe-se que tais resíduos têm baixa massa específica e características termo-acústicas favoráv
Publicado em: 2005
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15. Comparison between glass bottles and PET bottles for energy utilization and carbon dioxide emission, using environmental life cycle assessment / Comparação do consumo de energia e emissão de CO2 entre garrafas de PET e de vidro, utilizando analise ambiental de ciclo de vida
Nowadays the packing market presents great evolution, this happens because the packing choice, which are used in several products, that also consider the search for c1eaner technologies, and not on1y the costs and the consumer s preference. To manage packing choice, which get to affect less the environment, is used LIFE CYCLE ANAL YSIS, this method gets to m
Publicado em: 2004
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16. Produção de proteinas recombinantes utilizando Escherichia coli em cultivos em alta densidade celular
This thesis studied submerged high cell-density cultures (HCDC) of recombinant Escherichia coli identifying important kinetic parameters on growth and production phases. Several strategies to obtain HCDC were studied aiming to develop a robust fermentation process that allowed: High cell dry weight per liter; to determine the nutritional conditions to expres
Publicado em: 2004
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17. SULFOCHLORINATION WITH SULFURYL CHLORIDE : AN ALTERNATIVE PROCESS FOR THE MANUFACTURE OF SECONDARY ALKANESULFONATES / SULFOCHLORATION PAR LE CHLORURE DE SULFURYLE : UN PROCEDE ALTERNATIF POUR LA FABRICATION D ALCANESULFONATES SECONDAIRES.
Secondary alkanesulfonates (SAS) are biodegradable surfactants largely used as active matter in detergent formulations and as emulsifying agents. SAS are manufactured by photosulfoxidation or photosulfochlorination of linear paraffin cuts. The photosulfochlorination process usually involves the reaction of a gas mixture (SO 2 + Cl 2) on alkanes, but recent w
Publicado em: 2004
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18. Use of tower reactors for continuous ethanol production
The purpose of this work was to develop a continuous fermentation system operating with a tower reactor using some flocculent yeast strains isolated from an industrial process. The strain was an used in the trial of the proposed system, composed of two serial glass tower reactor. The effects of the following variables were studied on the yield and productivi
Brazilian Journal of Chemical Engineering. Publicado em: 2002-04
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19. Projeto de um controlador DMC para o processo CARE
O processo "CARE"( Continuous Adsorption Recycle Extraction ) é um sistema inovador de purificação de enzimas com grande potencial de aplicação industrial, proposto inicialmente por PUNGOR et al. (1987); é formado por dois estágios, adsorção e dessorção, sendo cada estágio aproximado por um reator perfeitamente misturado. A adsorção é por afin
Publicado em: 1999
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20. Modelagem, simulação e otimização de um processo de fermentação alcoolica continua, com recibo de celulas, em reator cascata
The culture conditions used in most of the works published on alcoholic fermentation with Saccharomyces cerevisiae showed to be different from those used in brazilian destilleries. Besides this, many works were carried out on isothermic conditions so that the temperature effect on yield and productivity couldn t have been verified. In this work the main obje
Publicado em: 1997
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21. Efeito da temperatura na cinetica de morte celular e em fermentação alcoolica continua com reciclo de celulas
The aims of this work were to study the temperature and ethanol concentration effect on the kinetics parameters ofthe cell growth and death, as well as the glucose consumption and the ethanol production by Sacchraromyces cerevisiae. Also the behavior of a pilot bioreactor with cell recycle, using industrial feed was evaluate. The constant searching for produ
Publicado em: 1996
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22. Determinação das condições de separação e purificação de ß-glicosidase a partir de complexo enzimatico
Cellulose is a very common natural substance. The hydrolysis of this material is caused by an enzyme complex, acting synergistically, known as cellulase. In such a complex, the enzyme β-glucosidase (EC 3.2.1.21) is responsible for the final step of hydrolysis to form glucose. This enzyme has numerous industrial applications. Particularly important among
Publicado em: 1996
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23. Tyrosinase Reaction and Subsequent Chitosan Adsorption for Selective Removal of a Contaminant from a Fermentation Recycle Stream
In the industrial production of penicillin V, the phenoxyacetate precursor is added to the fermentor to direct biosynthesis. When used for producing semisynthetic penicillins, the penicillin V is often hydrolyzed to 6-aminopenicillanic acid with the regeneration of the phenoxyacetate precursor. To reduce raw-material as well as waste-disposal costs, it is de