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Liquid state bioconversion of domestic wastewater sludge for bioethanol production

Alam, Md. Zahangir and Kabbashi, Nassereldeen Ahmed and Razak, A A (2007) Liquid state bioconversion of domestic wastewater sludge for bioethanol production. In: 3rd Kuala Lumpur International Conference on Biomedical Engineering 2006, 11-14 December, 2006, Palace of the Golden Horses, Malaysia.

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The production of bioethanol was conduct-ed by utilizing domestic wastewater sludge as major substrate using the yeast, Saccharomyces cerevisiae in liquid state bioconversion method (submerged fermenta-tion). The optimum media and process conditions ob-tained from previous studies by using central composite design were applied in this study to evaluate the biocon-version process through ethanol production. The results presented in this study showed that 9.8% ethanol was produced utilizing sludge as substrate by Saccharomyces cerevisiae within 48 hours of fermentation while the COD, copper and chromium (heavy metals) removal were found to be 62%, 68% and 45% respectively in treated sludge after 72 hours of fermentation period. The total suspended solids (TSS) as biosolids (microbial growth) was observed to evaluate the microbial perfor-mance in bioconversion process. The observed yield and productivity were determined as well.

Item Type: Conference or Workshop Item (Full Paper)
Additional Information: 4157/5841
Uncontrolled Keywords: Domestic wastewater sludge, bioethanol, Sac-charomyces cerevisiae, liquid state bioconversion, sludge man-agement
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: 05 Nov 2011 11:48
Last Modified: 22 Nov 2011 06:48
URI: http://irep.iium.edu.my/id/eprint/5841

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