Study of an ethylic biodiesel integrated process: Raw-materials, reaction optimization and purification methods

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

J. M. Dias (Autor) FEUP; E. Santos (Autor) FEUP; F. Santo (Autor) FEUP; F. Carvalho (Autor) FEUP; M. C. M. Alvim Ferraz (Autor) FEUP; M. F. Almeida (Autor) FEUP

Revista

Título: Fuel Processing Technology

Vol. 124

Páginas: 198-205

ISSN: 0378-3820

Editora: Elsevier

Indexação

ISI Web of Knowledge - 13 Citações

ISI Web of Science

Scopus - 15 Citações

Classificação Científica

CORDIS: Ciências Tecnológicas

FOS: Ciências da engenharia e tecnologias > Engenharia do ambiente

Projetos Associados

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Outras Informações

ID Authenticus: P-009-BNG

DOI: 10.1016/j.fuproc.2014.02.026

Abstract (EN): No studies are reported on ethylic biodiesel integrated processes, considering raw materials, reaction optimization and product purification. The present study aims to: i) select key variables for experimental optimization of ethanolysis using a virgin vegetable oil; ii) perform an optimization study using a waste oil; and iii) evaluate the effectiveness of water free purification methods. Sunflower oil ethanolysis was conducted at different temperatures (30 - 80 degrees C), catalyst concentrations (0.3 - 2 wt.%), reaction times (0.5 - 4 h) and ethanol: oil molar ratios (2:1 - 12:1). Optimization experiments on waste oil ethanolysis were performed at different temperatures (30 50 C) and ethanol: oil molar ratios (6:1 - 12:1), during 1 h and using 1 wt.% catalyst. Quality parameters were measured according to EN 14214. A cation-exchange resin and a ceramic membrane were evaluated for water-free purification. Regarding sunflower oil ethanolysis, when successful, conversion ranged from 75.2 to 97.7 wt.%. Using both oils under optimized conditions (45 degrees C, 6:1 ethanol:oil molar ratio), a product with a very high purity (>98.0 wt.%) was obtained after water washing purification. The 0.1 mu m ceramic membrane was more effective than the cation-exchange resin, but it was not possible to obtain a good quality product using both methods.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8