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In Situ Trans-Esterification of Residual Oils in Spent Bleaching Clays from Vegetable Oil Refineries
Pages 59-67
Prapassorn Phakahan, Kornkanok Aryusuk, Supathra Lilitchan and Kanit Krisnangkura

DOI: http://dx.doi.org/10.6000/1929-6002.2016.05.02.3

Published: 25 July 2016

 

Abstract: Spent bleaching clays (SBCs) from vegetable oil refineries are industrial wastes. The clays contain large amount of oils (20-25%), which are good feedstock for biodiesels. Non-thermal in situ trans-methylation and trans-ethylation of oils in the SBC from rice bran oil (RBO), crude palm oil (CPO) and palm kernel oil (PKO) are rapid and can be accomplished in minutes with an alkaline catalyst. Thus, the process may possibly be used for large scale preparation of ethyl biodiesel.

Keywords: Biodiesel, ethyl ester, methyl ester, palm kernel oil, palm oil, rice bran oil, spent bleaching clay.
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