Optimization of process factors for solid-state bioconversion of domestic wastewater sludge

Mollah, Md. Fazlul Awal and Fakhru’l-Razi, A. and Hanafi, M. Musa and Alam, Md. Zahangir (2004) Optimization of process factors for solid-state bioconversion of domestic wastewater sludge. International Biodeterioration & Biodegradation, 53 (1). pp. 49-55. ISSN 09648305

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Abstract

Since optimization of operational parameters is the key factor for solid-state bioconversion (SSB) by microorganisms, the growth,proliferation and establishment of two compatible mixed fungal cultures, Trichoderma harzianum with Phanerochaete chrysosporium 2094 and T. harzianum with Mucor hiemalis were evaluated under di6erent operational parameters for conducting e7ciently the SSB of domestic wastewater sludge. Growth and development of selective mixed cultures were ascertained by evaluation of dry mycelial biomass, total organic carbon, soluble protein production and radial growth rate in growth media containing domestic wastewater sludge. A carbon:nitrogen (C:N) ratio of 30:1, a cheapand easily available carbon-rich co-substrate (wheat <our), an initial substrate pH of 4.5– 5.5 and presence of bulking material (rice straw) gave signi.cantly higher mycelial biomass, total organic carbon, soluble protein and growth rates than other treatments. These conditions may be e6ective for large-scale SSB of domestic wastewater sludge by these mixed fungal cultures

Item Type:	Article (Journal)
Additional Information:	4157/4956
Uncontrolled Keywords:	Optimization; Process factors; Solid-state bioconversion; Mixed fungal inoculum; Domestic wastewater sludge
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:	03 May 2013 11:24
Last Modified:	03 May 2013 11:24
URI:	http://irep.iium.edu.my/id/eprint/4956

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