Biodiesel Purification
Mostrando 1-12 de 34 artigos, teses e dissertações.
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1. AN APPROACH BASED ON ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY TO STUDY THE GLYCEROL/BIODIESEL GRAVITY SEPARATION
In this study, electrochemical impedance spectroscopy (EIS) is evaluated as a novel application in the biodiesel purification process. EIS is proposed as a tool to study the behavior of charge carriers produced from side reactions or dissociations of some impurities during the gravitational separation of glycerol dispersed in crude biodiesel after the transe
Quím. Nova. Publicado em: 2020-12
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2. Regenerated Cellulose Membrane from Peanut Shell for Biodiesel Purification
Biodiesel purification by water washing has been proved to be an unattractive process from an economic and environmental point of view. In this work, we propose the use of regenerated cellulose membranes from peanut shell as an alternative in the biodiesel purification. The preparation of the membranes was optimized from a central composite design, resulting
J. Braz. Chem. Soc.. Publicado em: 2020-05
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3. Esterificação do ácido oleico utilizando aluminossilicato mesoporoso modificado com óxido de zircônio
RESUMO Os desafios decorrentes do aumento populacional, do uso extensivo e degradação dos recursos naturais e da dependência dos recursos fósseis, tem despertado o interesse pelo desenvolvimento de tecnologias para a produção de combustíveis renováveis. Dentro deste contexto tecnologias para a produção de biodiesel tem sido bastante estudadas de fo
Matéria (Rio J.). Publicado em: 20/05/2019
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4. Use of chitosan in the remediation of water from purification of biodiesel
Abstract This article evaluates the efficiency of the degradation of pollutants present in water from the purification of biodiesel, characterized by high content of chemical oxygen demand (COD), suspended solids (SS), oils and greases, methanol, soap, and glycerol. The treatment process proposed was of the photo-Fenton type using iron immobilized in chitos
Polímeros. Publicado em: 29/11/2018
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5. Application of a composite ultrafiltration membrane for biodiesel purification
ABSTRACT This study was carried out to investigate the potentialities of the application of membrane technology in biodiesel purification without need of the decantation step. A new composite UF membrane was prepared from poly(vinylidene fluoride) casting solution (17 wt%) containing a sulfonated Carbon (20 wt%). The assays were performed in a dead-end filtr
Matéria (Rio J.). Publicado em: 19/07/2018
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6. EXPERIMENTAL DATA, THERMODYNAMIC MODELING AND SENSITIVITY ANALYSES FOR THE PURIFICATION STEPS OF ETHYL BIODIESEL FROM FODDER RADISH OIL PRODUCTION
Abstract The goals of this work were to present original liquid-liquid equilibrium data of the system containing glycerol + ethanol + ethyl biodiesel from fodder radish oil, including the individual distribution of each ethyl ester; to adjust binary parameters of the NRTL; to compare NRTL and UNIFAC-Dortmund in the LLE representation of the system containing
Braz. J. Chem. Eng.. Publicado em: 2017-01
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7. POTENCIAL CATALÍTICO DE LIPASES LIGADAS AO MICÉLIO DE FUNGOS FILAMENTOSOS EM PROCESSOS DE BIOTRANSFORMAÇÃO
Over the past decades, mycelium-bound lipase of filamentous fungus has been extensively studied as an alternative biocatalyst in biotransformation processes. Mycelium-bound lipase can be used directly as suspended free cells or immobilized within biomass support particles as whole cells biocatalyst. In the latter, cells can be immobilized in situ or extra si
Quím. Nova. Publicado em: 2017-01
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8. LIQUID-LIQUID EQUILIBRIUM FOR TERNARY SYSTEMS CONTAINING ETHYLIC BIODIESEL + ANHYDROUS ETHANOL + REFINED VEGETABLE OIL (SUNFLOWER OIL, CANOLA OIL AND PALM OIL): EXPERIMENTAL DATA AND THERMODYNAMIC MODELING
Abstract Phase equilibria of the reaction components are essential data for the design and process operations of biodiesel production. Despite their importance for the production of ethylic biodiesel, the reaction mixture, reactant (oil and ethanol) and the product (fatty acid ethyl esters) up to now have received less attention than the corresponding system
Braz. J. Chem. Eng.. Publicado em: 2015-09
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9. Using glycerol produced from biodiesel as a plasticiser in extruded biodegradable films
AbstractThe demand for renewably sourced biodegradable materials has increased the need to produce materials that combine appropriate functional properties at competitive costs. Thermoplastic starch and polyester blends are an interesting alternative to current materials due to the low cost of starch and the functional properties and processability of the re
Polímeros. Publicado em: 2015-08
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10. Production and characterization of an extracellular lipase from Candida guilliermondii
Extracellular lipases from the endophytic yeast Candida guilliermondii isolated from castor leaves (Ricinus communis L.) were produced using low-cost raw materials such as agro-industrial residues and applying them in the esterification of oleic acid for evaluating their potential use in biodiesel production. After partial purification using ammonium sulfate
Braz. J. Microbiol.. Publicado em: 2014-12
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11. 1,3-propanodiol: produção, aplicações e potencial biotecnológico
1,3-propanediol is a high-value specialty chemical which has many industrial applications. Its main use is the production of the polymer polypropylene terephthalate, a thermoplastic used in the textile and automobile industries. The interest in 1,3-propanediol production from glycerol bio-conversion has increased after the employment of biodiesel by various
Quím. Nova. Publicado em: 2014-06
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12. Avaliação dos processo de lavagem com água e de filtração por membranas na purificação de biodiesel
O biodiesel é um potencial combustível substituto ao diesel de petróleo devido às questões relacionadas com a demanda energética e aspectos ambientais. Uma das etapas críticas do processo produtivo do biodiesel é a sua purificação. Convencionalmente, o biodiesel é purificado por sucessivas lavagens com água limpa. Este processo, além de dispendi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/07/2012