Biodiesel
Mostrando 49-60 de 1397 artigos, teses e dissertações.
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49. BRIQUETTES QUALITY PRODUCED WITH THE MACAUBA EPICARP (Acrocomia aculeata) AND Pinus sp. WOOD
RESUMO A macaúba (Acrocomia aculeata) é uma palmeira oleaginosa de alto valor econômico pela sua grande produtividade e pelas amplas possibilidades de aproveitamento das diferentes partes da planta. Esta palmeira é uma das espécies mais promissoras para a produção de biodiesel, e, durante o seu uso, há geração de grande quantidade de resíduos. O o
Rev. Árvore. Publicado em: 25/11/2019
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50. Air drying of macauba fruits: maintaining oil quality for biodiesel production
ABSTRACT. Macauba fruits are oil-rich drupes with high moisture content at harvest. This feature can affect the chemical properties of the oil and increase the costs of biodiesel production. Therefore, it is necessary to adopt postharvest strategies to ensure oil quality. The aim of this work was to evaluate the effect of drying macauba fruit on the quality
Acta Sci., Agron.. Publicado em: 21/10/2019
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51. BIORREMEDIAÇÃO DE EFLUENTES POR MEIO DA APLICAÇÃO DE MICROALGAS - UMA REVISÃO
National industrial effluent remediation strategies are largely outdated, which makes these processes costly and at the same time inefficient. Among the most worrying compounds are heavy metals, which have bioaccumulative and toxic characteristics to living beings. In addition to these, high nutrient loads constitute a huge environmental problem, since the d
Quím. Nova. Publicado em: 21/10/2019
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52. Sowing date and fungicide application in the agronomic performance of oleaginous brassica for the biodiesel production
ABSTRACT This work aims to evaluate the agronomic performance of crambe and juncea canola, sowed in the summer and winter season intervals with and without fungicide application. The cultivars used were FMS Brilhante and Terola 25A85 for crambe and juncea canola, respectively. The experimental design was randomized blocks in split plots, in which the plots w
Rev. Ceres. Publicado em: 03/10/2019
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53. SYNTHESIS OF SOLID CATALYST FROM DOLOMITE FOR BIODIESEL PRODUCTION USING PALM KERNEL OIL IN AN OPTIMIZATION PROCESS BY DEFINITIVE SCREENING DESIGN
Abstract A solid catalyst for biodiesel production was synthesized from dolomite by calcination at different temperatures of 800 and 900oC for 2 h. The catalyst was characterized by scanning electron microscopy (SEM) and Brunauer Emmett Teller (BET). Its performance in the production of palm kernel biodiesel (PKB) using palm kernel oil in an optimization stu
Braz. J. Chem. Eng.. Publicado em: 30/09/2019
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54. EVALUATION OF ANTIOXIDANT ACTIVITY OF NATURAL EXTRACTS ON THE OXIDATIVE STABILITY OF COTTONSEED BIODIESEL
Abstract The objective of this study was to evaluate the antioxidant activity of the natural extracts catechin, curcumin and quercetin on the oxidative stability of methylic cottonseed oil biodiesel. The oxidative stability was evaluated using the Rancimat method (EN 14112) for biodiesel with 500, 1000, 1500, 2000 and 3000 ppm of additives, and compared with
Braz. J. Chem. Eng.. Publicado em: 30/09/2019
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55. PRODUCTION OF METHYL ESTERS BY ENZYMATIC HYDROESTERIFICATION OF CHICKEN FAT INDUSTRIAL RESIDUE
Abstract The feedstock cost can comprise more than 75% of the overall biodiesel cost, and then economic issues are the main limitations of biodiesel production. This research focused on the use of alternative feedstock and production processes. The production of fatty acid esters from residues becomes an interesting alternative route since it is possible to
Braz. J. Chem. Eng.. Publicado em: 30/09/2019
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56. Magnetic Materials Enriched with Strontium: a Study of the use as Catalysts in the Transesterification Reaction of Babassu Oil
This work described a new magnetic material enriched with strontium as catalyst to produce babassu biodiesel. The use of magnetic materials has attracted attention due to easy and fast separation from reaction medium. Moreover, they are ecologically correct, due to they generate less discards to the environment. Techniques of analysis and characterization we
Mat. Res.. Publicado em: 30/09/2019
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57. Obtenção e caracterização de copolímeros de Poliacrilonitrila (PAN) para uso em processos de fiação em extrusora
RESUMO A disponibilidade de novos materiais, processos e equipamentos sempre traz perspectivas favoráveis ao mercado. A busca por processos alternativos e pela redução do custo da obtenção de precursores de materiais de alto desempenho tem se tornado primordial para o desenvolvimento do setor industrial de produtos com valores mais acessíveis, visando
Matéria (Rio J.). Publicado em: 16/09/2019
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58. Simple Niobium Catalysts Applied in Reflux and Ultrasound-Assisted Systems for Biofuel Synthesis
Using niobium compounds as heterogeneous catalysts in biodiesel production is a promising methodology from economic and environmental viewpoints. However, the application of niobium catalysts still is a challenge due to the high temperatures and pressures for moderate biofuel yields. Therefore, easily handled and applied materials have been developed to opti
J. Braz. Chem. Soc.. Publicado em: 16/09/2019
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59. Quantification and qualification of exhaust gases in agricultural diesel engine operating with biodiesel mixtures
RESUMO Motores de ciclo diesel são amplamente utilizados em máquinas agrícolas. O biodiesel oferece a possibilidade de substituição parcial ou total do diesel mineral, reduzindo assim a dependência da agricultura desse recurso não renovável e diminuindo as emissões de poluentes. O objetivo deste estudo foi avaliar as emissões de CO, NOx, SO2, CO2 e
Rev. bras. eng. agríc. ambient.. Publicado em: 09/09/2019
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60. Crop residues activity against the free-living stages of small ruminant nematodes
Resumo O efeito nematicida de diferentes materiais orgânicos foi avaliado, com o objetivo de desenvolver um tratamento alternativo não químico do solo para o controle dos estágios de vida livre de nematoides gastrintestinais de pequenos ruminantes. Os materiais orgânicos selecionados foram resíduos da indústria de suco de acerola, caju, uva, goiaba, m
Rev. Bras. Parasitol. Vet.. Publicado em: 29/08/2019