Please use this identifier to cite or link to this item:
https://hdl.handle.net/10216/103707
Author(s): | J. M. Dias E. Santos F. Santo F. Carvalho M. C. M. Alvim Ferraz M. F. Almeida |
Title: | Study of an ethylic biodiesel integrated process: Raw-materials, reaction optimization and purification methods |
Issue Date: | 2014 |
Abstract: | 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. |
Subject: | Ciências Tecnológicas, Engenharia do ambiente Technological sciences, Environmental engineering |
Scientific areas: | Ciências da engenharia e tecnologias::Engenharia do ambiente Engineering and technology::Environmental engineering |
URI: | https://hdl.handle.net/10216/103707 |
Related Information: | info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e a Tecnologia/Projetos Estratégicos/UID/EQU/00511/2013 - POCI-01-0145-FEDER-006939/Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia/LEPABE |
Document Type: | Artigo em Revista Científica Internacional |
Rights: | restrictedAccess |
Appears in Collections: | FEUP - Artigo em Revista Científica Internacional |
Files in This Item:
File | Description | Size | Format | |
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93758.1.pdf | Post-Print version | 883.89 kB | Adobe PDF | View/Open |
93758.pdf Restricted Access | Artigo original publicado | 480.64 kB | Adobe PDF | Request a copy from the Author(s) |
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