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| Registros recuperados: 197 | |
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| Ferreira, Willian J.; Batista, Getulio T.. |
| A utilização mais eficiente de energia e a transição de fontes fósseis para alternativas energéticas renováveis têm sido propostas desafiadoras para o mundo atual. Cresce o número de pesquisas no setor dos biocombustíveis e existem motivações para a produção e uso do biodiesel. No Vale do Paraíba/SP, o pinhão manso tem despertado o interesse dos produtores rurais e seu plantio em áreas degradadas favorecerá o melhoramento das propriedades do solo e das condições ambientais. Ao criar cenários de otimismo à cadeia produtiva do biodiesel a espécie se torna um importante elemento de sustentabilidade, fomentando o desenvolvimento da região. |
| Tipo: Presentation |
Palavras-chave: Jatropha; Energia alternativa; Biodiesel; Mudanças climáticas. |
| Ano: 2010 |
URL: http://hdl.handle.net/2315/157 |
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| Skutsch, Margaret; Centro de Investigaciones en Geografia Ambiental, Universidad Nacional Autonoma de Mexico; mskutsch@ciga.unam.mx; de los Rios, Emilio; REMBIO, Mexico; emiliodelos@gmail.com; Solis, Silvia; Centro de Investigaciones en Ecosistemas, Universidad Nacional Autonoma de Mexico; solis.sm@gmail.com; Riegelhaupt, Enrique; REMBIO, Mexico; riegelya@yahoo.com; Hinojosa, Daniel; Centro de Investigaciones en Geografia Ambiental, Universidad Nacional Autonoma de Mexico; idhinojosaf@gmail.com; Gerfert, Sonya; University of Twente, the Netherlands; s.gerfert@student.utwente.nl; Gao, Yan; Centro de Investigaciones en Ecosistemas, Universidad Nacional Autonoma de Mexico; yangao98@gmail.com; Masera, Omar; Centro de Investigaciones en Ecosistemas, Universidad Nacional Autonoma de Mexico; omasera@gmail.com. |
| Three case studies from Mexico are presented in which the impacts of the recent introduction of jatropha cultivation for biodiesel production are examined. In Chiapas and Michoacan, local social and environmental impacts were assessed using interviews with key informants and questionnaires directed at three groups of stakeholders: jatropha cultivators, farmers in the same areas who are not cultivating jatropha, and laborers on jatropha farms. Results show that the farmers are primarily motivated to participate by the subsidies offered in a government program in the first 2 years, rather than any proven economic benefit. Our farm budget study indicated that profits would be marginal for these farmers. However, no cases of land alienation were involved, and... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Biodiesel; Carbon balance; Estates; Smallholders; Sustainability. |
| Ano: 2011 |
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| Tian,Yinshuai; Zhang,Min; Hu,Xiaole; Wang,Linghui; Dai,Jiao; Xu,Ying; Chen,Fang. |
| Background: Jatropha curcas L. (further referred to as Jatropha), as a rapidly emerging biofuel crop, has attracted worldwide interest. However, Jatropha is still an undomesticated plant, the true potential of this shrub has not yet been fully realized. To explore the potential of Jatropha, breeding and domestication are needed. Seed size is one of the most important traits of seed yield and has been selected since the beginning of agriculture. Increasing the seed size is a main goal of Jatropha domestication for increasing the seed yield, but the genetic regulation of seed size in Jatropha has not been fully understood. Results: We cloned CYP78A98 gene from Jatropha,a homologue of CYP78A5 in Arabidopsis.Wefound that CYP78A98 was highly expressed in male... |
| Tipo: Journal article |
Palavras-chave: Biodiesel; Breeding; CYP78A5; Jatropha. |
| Ano: 2016 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000100003 |
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| Santos,Silas da S.; Biaggioni,Marco A. M.; Monteiro,Iara M. C.; Sartori,Maria M. P.; Brandão,Fernando J. B.. |
| ABSTRACT Peeling of crambe fruits, besides increasing the yield of mechanical oil extraction, can increase its apparent specific mass from about 330 to 700 kgm−3, reducing transport and storage operating costs, as well as increasing cake protein content. However, there is no information on the quality of the oil extracted from the stored unpeeled crambe. This study aimed to assess the possible effects of peeling fruits submitted to different storage systems. For nine months, peeled and unpeeled crambe fruits were stored in conventional (permeable) and hermetic packages and water content, fatty acid, and acidity and oil peroxide indices were monitored. The experimental design was a completely randomized design in a 2 x 2 x 3triple factorial, with three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hermetic storage; Biofuel; Biodiesel; Oilseeds. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000400518 |
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| Monteiro,Leonardo de A.; Pianovski Júnior,Guilherme; Velásquez,José Antonio; Rocha,Danilo S.; Bueno,André V.. |
| The use of renewable fuels, such as the biodiesel, can ease the demand of fossil fuel for the power generation and transportation fields in rural area. In this work, the performance impact of the application of castor oil biodiesel is evaluated with an automotive and a stationary diesel engine. The application of B20 and B10 biodiesel blends and pre-heated net biodiesel is considered. The viability of the employment of B10 and B20 blends to mobility and power generation was observed from dynamometric bench tests, where this blends performed similar to fossil diesel. With the pre-heated net biodiesel, however, a brake torque loss and a specific consumption increase were observed with relation to diesel fuel. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiesel; Castor Oil; Diesel Engine; Dynamometric Bench Tests. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000600009 |
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| Evangelista,Adão W. P.; Melo,Paulo C. de; Oliveira,Ednaldo L. de; Faria,Manoel A. de. |
| Com o objetivo de avaliar os efeitos da irrigação e aplicação do fertilizante Organo-Minerais-Marinhos + Biotech® (OMM-Tech) na produtividade e rendimento do pinhão-manso, um experimento foi instalado em Lavras - MG. O delineamento estatístico utilizado foi o de blocos casualizados, com parcelas subdivididas, contendo três repetições. As parcelas receberam tratamentos constituídos por três formas de aplicação do fertilizante OMM-Tech, ou seja: T1 = Testemunha (Sem OMM-Tech); T2 = via solo (120 kg ha-1 de OMM-Tech na forma de pó); T3 = via foliar (OMM-Tech na forma líquida e na concentração de 5%); e T4 = via solo + foliar (60 kg ha-1 de OMM-Tech na forma de pó + OMM-Tech na forma líquida, na concentração de 2,5%). As sub-parcelas receberam os tratamentos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Jatropha curcas L.; Biodiesel; Água. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162011000200011 |
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| Larsen,Andrea C.; Gomes,Benedito M.; Gomes,Simone D.; Zenatti,Dilcemara C.; Torres,Douglas G. B.. |
| The Brazil's Biodiesel Production and Use Program introduces biodiesel in the Brazilian energy matrix, bringing along the perspective of a growth of the glycerin offer, co-product generated in the proportion of 10 kg for each 100 L of biodiesel. The aim of this study was to evaluate the addition of crude glycerin in the anaerobic digestion of cassava starch industry effluent (cassava wastewater), in a horizontal semi-continuous flow reactor of one phase in laboratory scale. It was used a reactor with a 8.77 L of useful volume, a medium support for corrugated conduit of polyvinyl chloride (PVC), temperature of 261 ºC, fed with cassava wastewater and glycerin, with hydraulic detention times of 4 and 5 days and increasing volumetric organic load of 3.05;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cassava wastewater; Biodiesel; Biogas; Glycerol. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000200013 |
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| Deus,Fábio P. de; Faria,Manoel A. de; Oliveira,Ednaldo L. de; Castro Neto,Pedro. |
| The aim of this research was to evaluate the effects of different irrigation depths and potassium dosages, of Jatropha seed oil content and yield. The experimental design used was randomized blocks, in split-plots, with four replicates. The treatments were four water depths (plots) and four potassium dosages (subplots) applied through irrigation water. The water depths were applied based on the percentage of accumulated evaporation of a Class A (ECA) tank and of rainfall, as following: L0 = without irrigation, L40, L80 and L120, representing 40, 80 and 120% of the balance, respectively. The potassium dosages were K30, K60, K90 and K120 (30, 60, 90 and 120kg ha-1 of potassium, respectively). The oil extraction of samples was done through chemical extraction... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical extraction; Biodiesel; Oilseed; Drip irrigation. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000600010 |
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| OLIVEIRA, M. F. de; ASSIS, R, L. de; NETTO, D. A. M.. |
| As mudanças na sociedade moderna direcionam para hábitos e costumes contemporâneos focados na conscientização e usos de recursos com preservação do ambiente. Na atividade agropecuária, sobretudo em um país de dimensão continental nos trópicos como o Brasil, estas mudanças imprimem conceitos e práticas diferenciadas, baseados na bioeconomia, e admitindo progressivamente alternativas de modelos e sistemas de produção, incluindo a economia circular, renovável, verde - para ambientes de uma agricultura rural, periurbana e urbana. A produção de alimentos por técnicas sustentáveis e a preservação ambiental no ambiente rural brasileiro está em expansão e tornando-se uma das relevantes prioridades de agentes privados e públicos. O uso de boas práticas agrícolas... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Pennisetum Americanum; Recurso Energético; Biomassa; Etanol; Biodiesel. |
| Ano: 2020 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1122743 |
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| Registros recuperados: 197 | |
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