Biodiesel production via transesterification of palm olein using waste mud crab (Scylla serrata) shell as a heterogeneous catalyst

Boey, Peng-Lim and Maniam, Gaanty Pragas and Abd Hamid, Shafida (2009) Biodiesel production via transesterification of palm olein using waste mud crab (Scylla serrata) shell as a heterogeneous catalyst. Bioresource Technology, 100 (24). pp. 6362-6368. ISSN 0960-8524

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Abstract

A recent rise in crab aquaculture activities has intensified the generation of waste shells. In the present study, the waste shells were utilized as a source of calcium oxide to transesterify palm olein into methyl esters (biodiesel). Characterization results revealed that the main component of the shell is calcium carbonate which transformed into calcium oxide when activated above 700 �C for 2 h. Parametric studies have been investigated and optimal conditions were found to be methanol/oil mass ratio, 0.5:1; catalyst amount, 5 wt.%; reaction temperature, 65 �C; and a stirring rate of 500 rpm. The waste catalyst performs equally well as laboratory CaO, thus creating another low-cost catalyst source for producing biodiesel. Reusability results confirmed that the prepared catalyst is able to be reemployed up to 11 times. Statistical analysis has been performed using a Central Composite Design to evaluate the contribution and performance of the parameters on biodiesel purity.

Item Type:	Article (Journal)
Additional Information:	5980/5352
Uncontrolled Keywords:	biodiesel, heterogeneous catalyst, transesterification, methyl esters, crab shell
Subjects:	Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science > Department of Biotechnology
Depositing User:	Dr Shafida Abd Hamid
Date Deposited:	03 Nov 2011 15:36
Last Modified:	22 Nov 2011 16:52
URI:	http://irep.iium.edu.my/id/eprint/5352

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