Biofuels
Mostrando 1-12 de 179 artigos, teses e dissertações.
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1. Diesel-Like Biofuels Production Using Fatty Waste
According to the waste-to-energy (WTE) valorization and circular economy principles, the use of waste oil and grease (WOG) for obtaining biofuels shows the tendency towards sustainability, makes the interest in green chemistry, and the development of environmentally friendly processes grow. Three different fatty wastes (from the fat trap of a sewage station,
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Agricultural tractor performance fueled with proportions of biodiesel
ABSTRACT Among the fuel sources used nowadays, biofuels stand out for being renewable and biodegradable. In this sense, this work aimed to evaluate the performance and smoke opacity of an agricultural tractor in soil tillage activities, depending on the biodiesel blends and the engine rotation. Were used six blends of soy (S) and murumuru (M) biodiesel and s
Revista Ceres. Publicado em: 2022
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3. THE EVOLUTION OF ENVIRONMENTAL GOVERNANCE MECHANISMS: AN INSTITUTIONAL FRAMEWORK APPLIED TO BIOFUELS
Resumo Esse artigo apresente uma ferramenta analítica para avaliar a evolução de mecanismos de governança ambiental. A trajetória institucional dos mecanismos de certificação é influenciada por três variáveis pré-existentes: regulação pública, organização e competição setorial e mecanismos de legitimação. A competição entre sistemas de
Ambient. soc.. Publicado em: 25/11/2019
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4. Genetic variability revealed by microsatellite markers in a germplasm collection of Jatropha curcas L. in Brazil: an important plant for biofuels
Abstract We evaluated the genetic variability of a collection of Jatropha curcas germplasm, represented by 93 accessions, using microsatellite markers. Among the 60 markers tested, five of them detected polymorphisms, with a total of 11 alleles and mean of 2.2 alleles per loci. These five markers enabled the quantification of genetic variability through esti
Crop Breed. Appl. Biotechnol.. Publicado em: 31/10/2019
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5. A Study of Chemical Composition and Enzymatic Hydrolysis of Solid Organic Waste from Agrosilvopastoral Systems
Agrosilvopastoral waste, regarding agriculture and agro-industry sectors, is pointed as a promising sustainable raw material for biofuels production, specially concerning exploitation of lignocellulosic organic residues for fermentable sugars and cellulosic ethanol output, being therefore necessary to investigate the potential of these substrates concerning
J. Braz. Chem. Soc.. Publicado em: 16/09/2019
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6. Evaluation of Biomass Properties for the Production of Solid Biofuels
ABSTRACT The efficient use of biomass as fuel requires prior knowledge of the composition and properties of the material in order to be able to develop technologies for its efficient combustion while ensuring that emissions of pollutants remain within acceptable limits. Therefore, the analysis of the physical and chemical properties of these materials is ess
Floresta Ambient.. Publicado em: 05/09/2019
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7. INDUSTRIAL PLANT FOR PRODUCTION OF Spirulina sp. LEB 18
ABSTRACT Biorefineries based on microalgae produce biofuels and co-products with added value. Microalgae mainly require water, carbon dioxide and sunlight for growth. The bioproducts of the cultivation of these microorganisms can be fully used in a microalgae photobiorefinery. The objective of this work was to study the behavior of physico-chemical variables
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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8. Investigação do potencial do talo e da palha da carnaúba para utilização como biocombustível
RESUMO A carnaúba (Copernicia prunifera) é uma espécie vegetal comum no Nordeste do Brasil e possui grande importância comercial no que se refere a exploração/exportação da cera extraída de suas folhas. Assim, visando o pleno aproveitamento dos resíduos gerados na cadeia produtiva da carnaúba, neste trabalho é apresentada a caracterização da pa
Matéria (Rio J.). Publicado em: 10/06/2019
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9. Identification of microalgae from waste stabilization ponds and evaluation of electroflotation by alternate current for simultaneous biomass separation and cell disruption
RESUMO Este trabalho objetivou investigar a diversidade algal no que se refere a gênero em sistemas de lagoas de estabilização tratando esgoto doméstico, bem como analisar a viabilidade de um sistema de eletroflotação por corrente alternada para obter simultaneamente separação e ruptura celular. A avaliação de diversidade algal mostrou que os gêne
Eng. Sanit. Ambient.. Publicado em: 25/04/2019
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10. Using a Multivariate Approach to Compare Lipid Extraction Protocols from Microalgae Scenedesmus sp.
Microalgae lipid-derived biofuels is considered promising candidates for substitution of petroleum-based energy sources. However, the lipid extraction from the algal biomass stands as a challenge due to its low yields and cost-intensive cell disruption procedures. In this study a multivariate optimization of the extraction conditions was suggested, aiming a
J. Braz. Chem. Soc.. Publicado em: 2019-03
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11. Appliance of a high pressure semi-batch reactor: supercritical transesterification of soybean oil using methanol
Abstract This work presents the results of a supercritical transesterification process of soybean oil using methanol, performed in a laboratory high pressure semi-batch reactor. A full description of the equipment and a standard operating procedure are also provided. Since fossil fuels are not renewable, biofuels such biodiesel, have gained attention over t
Food Sci. Technol. Publicado em: 31/01/2019
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12. Bioenergetics Potential of RR2 PRO Transgenic Soybean Subjected to Application of Herbicides Isolated and in Combination
ABSTRACT In Brazil, there are several crops producing oil for biofuel production, such as canola, sunflower, peanut, cotton, castor bean, soybean, among others. There are parameters that indicate the energetic and economic viability for the production of biofuels, and that can be applied, for example, in transgenic soybeans. The present study aimed to evalua
Braz. arch. biol. technol.. Publicado em: 29/11/2018