Treatment and biodegradation kinetics of microbially treated domestic wastewater sludge

Alam, Md. Zahangir and Fakhru’l-Razi, A. and Mollah, Abul H. (2004) Treatment and biodegradation kinetics of microbially treated domestic wastewater sludge. Journal of Environmental Science and Health, Part A., 39 (8). pp. 2059-2070. ISSN 1532-4117 (O), 1093-4529 (P)

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Abstract

A laboratory-scale study was undertaken to evaluate the liquid state bioconversion (LSB) in terms of biodegradation of microbially treated domestic wastewater sludge (biosolids) as well as its kinetics. The potential fungal strains and process factors developed from previous studies were used throughout the study. The results presented in this study showed that an effective biodegradation occurred with the biosolids (sludge cake) accumulated. The maximum biosolids (sludge cake) accumulated (93.8 g/kg of liquid sludge) enriched with the biomass protein (30.2 g/kg of dry biosolids), was achieved which improved the effluent quality by enhancing the removal of chemical oxygen demand (COD), reducing sugar (RS),soluble protein (SP), total dissolved solids (TDS), and total suspended solids (TSS). The higher reduction of specific resistance to filtration (SRF) was observed during bioconversion process. The kinetics results showed that the experimental data were better fitted for the biodegradation efficiency, and biosolids accumulation and biodegradation rate.

Item Type:	Article (Journal)
Additional Information:	4157/5029
Uncontrolled Keywords:	Bioconversion; Biodegradation kinetics; Biosolids; Domestic wastewater sludge; Microbial treatment.
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 15:27
Last Modified:	03 May 2013 15:27
URI:	http://irep.iium.edu.my/id/eprint/5029

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