Clean Technology
Mostrando 37-48 de 52 artigos, teses e dissertações.
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37. Solubility of dense CO2 in two biocompatible acrylate copolymers
Biocompatible polymers and copolymers are frequently being used as part of controlled delivery systems. These systems can be prepared using a "clean and environment friendly" technology like supercritical fluids. One great advantage of this process is that compressed carbon dioxide has excellent plasticizing properties and can swell most biocompatible polyme
Brazilian Journal of Chemical Engineering. Publicado em: 2006-06
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38. Tecnologia de geração de energia limpa a serviço da promoção da saúde / Technology of clean energy to health promotion
A falta de acesso à energia elétrica e a todos os benefícios que ela pode trazer levou à elaboração desta pesquisa, tendo como foco principal o atendimento às necessidades básicas de saúde. Para a presente pesquisa estudou-se: o acesso à saúde no Brasil; a seleção de um município como piloto, em um estado brasileiro com baixo IDH (índice de De
Publicado em: 2006
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39. Fatores inibidores do uso de técnicas ambientais nos postos de combustíveis: um estudo de caso em Natal/RN / Inhibiting factors of use of environmental techniques in the gas station: a study of the case Natal/RN
The objective of this work was to investigate the factors that inhibit the use of Environmental Techniques in the Gas Station of the city of Natal/RN. For this, a survey with the aid of a questionnaire was used like research instrument. Its used a sample for convenience, not probabilistic. For collection of the data, it was used directly application of the q
Publicado em: 2006
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40. Projeto e Operação em Escala Semi-Industrial de um Equipamento para Tratamento de Águas Produzidas na Indústria do Petróleo Utilizando Nova Tecnologia: misturador-decantador à inversão de fases - MDIF
Este trabalho tem por objetivo utilizar uma nova tecnologia no tratamento de águas produzidas da indústria do petróleo. Uma Unidade de Tratamento de Águas Produzidas, denominada UT-MDIF, foi projetada, instalada e operou dentro de uma planta industrial de tratamento de efluentes de petróleo. Esta Unidade de Tratamento piloto utiliza o método de separa�
Publicado em: 2006
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41. Sensorial analysis of special coffees of the state of Minas Gerais / AnÃlise sensorial dos cafÃs especiais do estado de Minas Gerais
It is known that coffee quality is beginning to prove indispensable to the consumer who each day is more concerned with flavor, aroma, hygiene of the produce that he consumes, seeking a special coffee and that that quality is related with the cares with coffee, mainly as to the types of processing adopted by the coffee growers. In this context, the chief obj
Publicado em: 2006
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42. The influence of soil characteristics in remediation of contaminated soils through advanced oxidation process with Sodium Persulfate and Fenton Reagent. / A influência das características dos solos na remediação de solos contaminados através de processos oxidativos avançados com persulfato e reagente de fenton
The remediation techniques used in contaminated soils such as "in situ" chemical oxidation aim essentially the mineralization of contaminants, reducing it to CO2 and H2O. The objective of this study is pointing out the results of experiments conducted to investigate how the soil characteristics such as granulometry, assay and nature of clay minerals as well
Publicado em: 2006
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43. Identification of shortfalls and establishment of a workplan for the success of the Brazilian Biodiesel Program. / Identificação dos gargalos e estabelecimento de um plano de ação para o sucesso do Programa Brasileiro do Biodiesel.
The increasing demand for the development of automotive technologies of less polluting fuel emissions, including that of alternative fuels, has been the way to foster Biodiesel technology, of non-fossil origin, derived from renewable sources, aiming at gradually substituting the use of diesel oil, in the worldwide energetic matrix. The american directive C
Publicado em: 2005
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44. Estudo da Adição do Promotor Cu aos Catalisadores Pt/Al2O3 e Pt/Nb2O5 para a Oxidação Seletiva de CO / Study of the Addition of Cu Promoter to the Pt/Al2O3 and Pt/Nb2O5 catalysts for the Selective Oxidation of CO
The fuel cells are an alternative to generate energy without polluting the environment. They produce electric energy through the reaction of hydrogen with the oxygen from air. The product of the reaction is water. It is an interesting form of generation energy because its a clean technology. The hydrogen used as combustible for the fuel cells is proceeding f
Publicado em: 2005
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45. Evaluation of impacts of clean technologies and cooking fuel substitution in urban households of Tanzania / Avaliação de impactos de tecnologias limpas e substituição de combustiveis para cocção em residencias urbanas na Tanzania
The objective of this study is to verify quantitatively the impacts of energy efficiency improvements and cooking fuels substitution in Dar es Salaam, Tanzania. The analysis focuses on developing countries and entails infonnation on access to cooking fuels, technologies and characteristics which defme a clean cooking energy based on the recommended efficienc
Publicado em: 2004
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46. Degomagem of miscela of maize oil (Zea mays L.) for ultrafiltration. / Degomagem de miscela de oleo de milho (Zea mays, L.) por ultrafiltração.
Crude corn oil possess undesirable substances that affect the quality of the final product, among them are phospholipids, pigments, waxes and free fatty acids, Where some of them can be separate, at least partially, through ultrafiltration. Some works have been developed applying this technology in degumming of vegetable oils, and removal of phospholipids, w
Publicado em: 2004
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47. Diretrizes de gestÃo e tecnologia para o tratamento de efluentes industriais
From the second half of the last century onwards, an enormous industrial revolution started due to the increasing demands after the World War II. The industries needed to produce more, with more quality, and in lower time, to help the rebuilding of the countries involved in the conflict. Herewith, and in view of the exponential populational increase that occ
Publicado em: 2003
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48. Biopitch produced from eucalyptus wood pyrolysis liquids as a renewable binder for carbon electrode manufacture
Interest in biomass as a clean source of fuel, chemicals and materials is growing fast. What is attractive about biomass is its renewability and that it is CO2 balanced and sulfur-free. Biomass pyrolysis produces charcoal, bio-oil and gases in different proportions, depending on the technology and raw material used. In this study biopitch, a substitute for f
Brazilian Journal of Chemical Engineering. Publicado em: 2002-04