Domestic wastewater biosolids accumulation by liquid state bioconversion process for rapid composting

Fakhru’l-Razi, Ahmadun and Alam, Md. Zahangir and Idris, Azni and Abd-Aziz, Suraini and Molla , Abul Hossain (2002) Domestic wastewater biosolids accumulation by liquid state bioconversion process for rapid composting. Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering, 37 (8). pp. 1533-1543. ISSN 1093-4529

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Abstract

Bioconversion of higher strength of domestic wastewater biosolids (sludge) (4% w/w of TSS) by mixed fungal culture of Aspergillus niger and Penicillium corylophilum was studied in a laboratory. The effect of potential mixed fungi on domestic wastewater sludge accelerated the liquid state bioconversion (LSB) process. The highest production of dry sludge cake (biosolids) was enriched with fungal biomass to about 85.66 g/kg containing 25.23 g/kg of protein after 8 days of treatment. The results presented in this study revealed that the reduction of chemical oxygen demand (COD), total suspended solid (TSS), and specific resistance to filtration (SRF) of treated sludge were highly influenced by the fungal culture as compared to control (uninnoculated). The maximum removal rates in treated sludge (biosolids) supernatant recorded were 92% of COD and 98.8% of TSS. Lower SRF (1.08�1012 m/kg) was perceived in microbially treated sludge after 6 days of fermentation. The observed parameters were highly influenced after 8 days of treatment. The influence of pH was also studied and presented in the paper.

Item Type:	Article (Journal)
Additional Information:	4157/5010
Uncontrolled Keywords:	Domestic wastewater sludge; Biosolids; Liquid state bioconversion;Specific resistance to filtration; Aspergillus niger; Penicillium corylophilum
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 Jul 2013 13:10
Last Modified:	17 Jul 2013 13:10
URI:	http://irep.iium.edu.my/id/eprint/5010

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