Transesterification of soybean oil using combusted oyster shell waste as a catalyst

Transesterification of soybean oil catalyzed by combusted oyster shell, which is waste material from shellfish farms, was examined. Powdered oyster shell combusted at a temperature above 700 °C, at which point the calcium carbonate of oyster shell transformed to calcium oxide, acted as a catalyst in...

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Bibliographic Details
Published in:Bioresource technology 2009-02, Vol.100 (3), p.1510-1513
Main Authors: Nakatani, Nobutake, Takamori, Hitoshi, Takeda, Kazuhiko, Sakugawa, Hiroshi
Format: Article
Language:English
Subjects:
Animals
Applied sciences
Aquaculture
Biodiesel
Biofuel production
Biological and medical sciences
Biotechnology
Catalysis
catalysts
Energy
Esterification
Exact sciences and technology
Factorial design
fatty acid methyl ester
Fundamental and applied biological sciences. Psychology
Hot Temperature
Industrial applications and implications. Economical aspects
Industrial Waste - prevention & control
Marine
Ostreidae - chemistry
Oyster shell
oysters
Pollution
renewable energy sources
Soybean oil
Soybean Oil - chemistry
Transesterification
Wastes
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Summary:Transesterification of soybean oil catalyzed by combusted oyster shell, which is waste material from shellfish farms, was examined. Powdered oyster shell combusted at a temperature above 700 °C, at which point the calcium carbonate of oyster shell transformed to calcium oxide, acted as a catalyst in the transesterification of soybean oil. On the basis of factorial design, the reaction conditions of catalyst concentration and reaction time were optimized in terms of the fatty acid methyl ester concentration expressed as biodiesel purity. Under the optimized reaction conditions of a catalyst concentration and reaction time of 25wt.%. and 5 h, respectively, the biodiesel yield, expressed relative to the amount of soybean oil poured into the reaction vial, was more than 70% with high biodiesel purity. These results indicate oyster shell waste combusted at high temperature can be reused in biodiesel production as a catalyst.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2008.09.007