Production of bioethanol from oil palm industrial solid waste by single-step bioconversion process

Alam, Md. Zahangir and Kabbashi, Nassereldeen and Tompang, Mohamad Fahrurrazi (2006) Production of bioethanol from oil palm industrial solid waste by single-step bioconversion process. In: Euro-Arab Environment, an International Conference and Exhibition 2006, 27-29 November 2006, Kuwait.

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Abstract

The bioethanol production was conducted by utilizing palm oil solid residues, empty fruit bunches (EFB) with the treatment of mixed culture of fungi and yeast in solid state bioconversion process. The compatibility of several fungal and yeast, were tested as to develop direct solid state bioconversion using the potential mixed culture. The mixed culture of fungi (Trichoderma harzianum) and yeast (Saccharomyces cerevisiae) has found to be the most potential as they produced higher ethanol among the other combination of mixed culture in liquid-broth fermentation for compatibility test. The optimization of process condition was done with varied level of moisture content, pH, inoculum size, concentration of co-substrate and mineral solution by using the central composite design (CCD). The optimum process conditions with maximum ethanol production (14.1%) were: moisture of 60%, pH of 7, inoculum size of 4%, co-substrate concentration of 2% and minerals concentration of 2%. The result indicated that pH, co-substrate and minerals concentration were highly significant (p<0.001)followed by moisture content (p<0.005) and inoculum size (p<0.005). The coefficient of determination (R2) was 99.6% which satisfied the adjustment of experimental data in the model. A validation experiment was been carried out to evaluate the process conditions obtained from model.

Item Type:	Conference or Workshop Item (Full Paper)
Additional Information:	4157/5850
Uncontrolled Keywords:	Bioethanol, solid-state bioconversion, empty fruit bunches, central composite design, solid waste
Subjects:	T Technology > TP Chemical technology T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Dr. Md. Zahangir Alam
Date Deposited:	17 Nov 2011 13:36
Last Modified:	22 Nov 2011 06:45
URI:	http://irep.iium.edu.my/id/eprint/5850

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