Production optimization and quality assessment of biodiesel from waste vegetable oil

Biodiesel production is worthy of continued study and optimization of production procedures because of its environmentally beneficial attributes and its renewable nature. In Egypt, millions L. of oil used for frying foods are discarded each year into sewage systems. Thus, it adds to the cost of trea...

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Bibliographic Details
Published in:International journal of environmental science and technology (Tehran) 2008, Vol.5 (1), p.75-82
Main Authors: Refaat, A. A, Attia, N. K, Sibak, H. A, El Sheltawy, S. T, El Diwani, G. I
Format: Article
Language:English
Subjects:
Aquatic Pollution
Biodiesel fuels
Biodiesel, waste vegetable oil, transesterification, optimization
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Science and Engineering
Optimization techniques
Process engineering
Soil Science & Conservation
Vegetable oils
Waste materials
Waste Water Technology
Water Management
Water Pollution Control
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Summary:Biodiesel production is worthy of continued study and optimization of production procedures because of its environmentally beneficial attributes and its renewable nature. In Egypt, millions L. of oil used for frying foods are discarded each year into sewage systems. Thus, it adds to the cost of treating effluent or pollutes waterways. This study is intended to consider aspects related to the feasibility of the production of biodiesel from waste/recycled oils in an attempt to help reduce the cost of biodiesel and reduce waste and pollution coming from waste oils. The variables affecting the yield and characteristics of the biodiesel produced from used frying oil were studied, the achieved results were analyzed and a set of recommendations was proposed. From the obtained results, the best yield percentage was obtained using a methanol/oil molar ratio of 6:1, potassium hydroxide as catalyst (1%) and 65°C temperature for one hour. The yield percentage obtained from waste vegetable oil was comparable to that obtained from neat vegetable oil which reached 96.15% under optimum conditions. From the results it was clear that the produced biodiesel fuel, whether from neat vegetable oil or waste vegetable oil, was within the recommended standards of biodiesel fuel.
ISSN:1735-1472
1735-2630
DOI:10.1007/BF03325999