RESEARCH ARTICLE


Utilization of Three Non-Edible Vegetable Oils for the Production of Biodiesel Catalysed by Enzyme



Sandip Kumar Haldar, Ahindra Nag*
Department of Chemistry, Indian Institute of Technology, Kharagpur, India


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© 2008 Haldar and Nag

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Chemistry, Indian Institute of Technology, Kharagpur, India; Tel: +91-3222-281900; Fax: +91-3222-255303; E-mail: ahinnag@chem.iitkgp.ernet.in


Abstract

Enzymatic transesterification by using lipase as catalyst has become more attractive for the production of biodiesel due to easy separation of products such as glycerol and fatty acid esters. Comparative studies of enzyme catalyzed transesterification of three less attended non edible oils (jatropha, karanja and putranjiva) have been discussed. The maximum yield has been obtained at 3:1 molar ratio of methanol and oil at 40°C and 8hrs reaction time. The percentage of conversion has been analyzed by Gas chromatography and 400 MHz 1H NMR. It has been observed that degummed vegetable oil gives higher conversion in transesterification reaction than straight vegetable oil. Secondary alcohol gives better result than methanol for the production of biodiesel due to its higher miscibility nature in oil.

Keywords: Enzyme, oils, alcohol, transesterification, degumming.