Journal
CHINESE JOURNAL OF CATALYSIS
Volume 29, Issue 1, Pages 41-46Publisher
SCIENCE PRESS
DOI: 10.1016/S1872-2067(08)60015-7
Keywords
Rhizopus chinensis; whole-cell lipase; transesterification; biodiesel; fatty acid methyl ester; solvent-free system; high acid value oil
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Compared with five commercial lipases, the whole-cell lipase of Rhizopus chinensis CCTCC M201021 (RCL) showed high catalytic ability in the transesterification of soybean oil to fatty acid methyl ester (biodiesel) in the solvent-free system. The effect of reaction parameters including methanol content, water content, lipase amount, and reaction temperature on transesterification was investigated. The blodiesel yield was more than 86.0% in the solvent-free system under the optimal reaction conditions. The effect of different organic solvents on the transesterification indicated that the best one was n-heptane with higher log P values (4.0-4.5). The whole-cell lipase was also proved to be an efficient and potential biocatalyst for biodiesel production from oleic acid and simulant high acid value oil in the solvent-free system.
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