Journal
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
Volume 27, Issue -, Pages 118-127Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.rser.2013.06.035
Keywords
Crude glycerol; Tranesterification; Saponification; Hydrolysis; Purification; Glycerol
Funding
- Fundamental Research Grant scheme (FGRS) from the Ministry of Higher Education Malaysia [FP058/2010B]
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Glycerol is a valuable byproduct in biodiesel production by transesterification, soap manufacturing by saponification as well as hydrolysis reaction. The purity of glycerol obtained is low due to the presence of impurities such as remaining catalyst, water, soaps, salts and esters formed during the reaction. Purification of glycerol as well as the conversion of glycerol into valuable products has attained growing interest in recent years due to the dramatic growth of the biodiesel industry. This paper reviews different methods of producing crude glycerol as the major by-product. Purification of glycerol was reported as well as value-added products produced from glycerol. (C) 2013 Elsevier Ltd. All rights reserved.
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