27 resultados para reforma de etanol

em Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho"


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Química - IQ

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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A new approach to generating clean energy has been studied by several researchers, among which one can highlight the steam reforming of biogas. The Biogas is result of decomposition of organic matter and it hasn’t been availed in the global level, instead, the biogas has been burned in flare or discarded into the atmosphere providing damage to the environment. The generation of vector biogas energy can be realized through its steam reforming and this work examines briefly the types of digesters used for biogas generation, studying the process of steam reforming to generate hydrogen as energy vector, analyzing each step in detail, seeking to adapt its main features an ethanol reformer for a biogas reformer. Besides this it is estimated the yield of the reform process and the boiler efficiency for efficiency of the process

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Pós-graduação em Engenharia Mecânica - FEG

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A partir da análise da Política Nacional de Saúde Mental formulada nos últimos anos e das experiências desenvolvidas após 1987 no país, procura-se compreender como o Sistema Único de Saúde tem contribuído ao avanço da reforma psiquiátrica nos municípios; verificar como a assistência oferecida nesses municípios está viabilizando os princípios da reforma psiquiátrica e a melhora das condições de vida dos usuários, bem como pesquisar o papel dos trabalhadores e gestores na construção de novas práticas de cuidado em Saúde Mental. A análise das práticas discursivas aponta que os vários segmentos sociais envolvidos na Saúde Mental conhecem os princípios e propostas da reforma psiquiátrica. No entanto, as gestões municipais não assumem integralmente as propostas do Ministério da Saúde para a área, sob a alegação de falta de recursos financeiros para a contrapartida exigida. Os usuários e familiares têm aos poucos assumido as novas propostas de intervenção, mas os mecanismos de participação e organização popular ainda são incipientes. Por fim, deve-se destacar que, para uma efetiva consolidação das propostas atuais da reforma psiquiátrica, é necessário um maior compromisso dos gestores com a atenção em Saúde Mental, maior investimento nas equipes multiprofissionais, o estímulo à organização e à participação dos usuários e familiares e a integralidade dos dispositivos de saúde, de assistência social e de cultura existentes nas cidades.

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Mental Health, in the form of the Psychiatric Reform, and the Anti-Asylum Movement do not ignore the production of knowledge about that field, mainly due to the consolidation of Public Health as a field of knowledge. The article explores some authors who consider Mental Health as a new field of knowledge, introducing a new paradigm in the perception of health - Disease and Care -; however, the goal is to introduce Psychosocial Care as a means to enforce the transdisciplinary and multiprofessional practices. The possibility is that mental health produces developments in Health, consolidating the public policies. In practice, the hospital-centered and drug-based model still predominates, and there are setbacks to be overcome by taking advantage of loopholes capable of breaking with what is instituted.

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This work aimed to analyze the energetic consumption of the etanol production system, using the cassava as carbohidrates source. The researches were carried out from the field in the mid region of Paranapanema river, São Paulo state, during the period January to December, 2007. The energy consumption referring to the phases of crop production and industrial processing were appraised. It was verified that the total energetic cost of the crop production corresponded to 9,528.33 MJ ha(-1), and the most onerous item was the inputs (35.72%). In the industrial step, the energetic consumption was equivalent to 2,208.28 MJ t(-1). The operations of hydrolysis/saccharification/treatment of the juice represented 56.72% of the total energetic expenditure. The cassava crop presented an energetic cost of 1.54 MJ L-1 in relation to the etanol produced in the main agronomic operations crop production, and 11.76 MJ L-1 in the industrial processing. The energy efficiency observed in the cultivation and industrialization of the cassava was of 1.76.

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This research analyzed the energetic consumption of the etanol, using as raw-material sugar cane. The searches were carried out from the field in the Midle Paranapanema River Region, São Paulo state, in the period from January to December 2007. The referring energy consumption from the crop production phase and industrial processing were evaluated. It was verified that the total energetic cost of the crop production corresponded to 14370.9MJ ha(-1), and the most onerous item was the inputs (50.4%). In the industrial step, the energetic consumption was equivalent to 1,641.56MJ t(-1), The 'hydrolysis, saccharification and broth treatment operations' represented 71.72% of the total energetic expenditure. It was also observed an energetic cost of 2.0MJ L(-1) in relation to the etanol produced in the main crop production operations, and 19.4MJ L(-1) in the industrial processing. The energy efficiency observed in the crop production and industrialization were of 1.1.

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Neste trabalho objetivou-se avaliar a concentração de pectinase (Pectinex Ultra SP-L) no processo de hidrólise-sacarificação do farelo de mandioca para produção de etanol. Foram avaliadas quatro concentrações da enzima pectinase com enzima complemetar as amilases e o tratamento com apenas as amilases. Realizou-se a caracterização do hidrolisado e resíduo fibroso resultantes do processo, e os resultados obtidos demonstraram que a concentração mínima de pectinase para um bom rendimento do processo foi 8Kg enzima/t fibras, com. 89,4% do amido hidrolisado. Quanto ao resíduo fibroso, este apresenta potencialidade de aproveitamento com base para produtos dietéticos ricos em fibras.

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Effect of fermentation parameters on ethanol production from cassava liquid residue (manipueira). "Manipueira", a liquid residue from the processing of cassava starch and flour, has recognized high pollution potential. Aiming at a possible use of "manipueira" as raw material for ethanol production, this study aimed to evaluate the effect of the percentage of inoculated yeast and fermentation temperature on the chromatographic profile of the components of wine of "manipueira". The residue was characterized for starch and sugar content, as well as pH and total acidity. The residue was hydrolyzed by the action of enzymes Termamyl 120 L and AMG 300 L. The hydrolysate obtained was fermented under different experimental conditions. A factorial central composite design (2(2)) with two independent variables and the response surface methodology were used to evaluate the results. The results showed a significant effect of variable parameters on the components of wine. The conditions of low fermentation temperature and lower percentages of inoculated yeast were the most appropriate to obtain ethanol from "manipueira".

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)