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Effect of agitation and aeration on bioconversion of domestic wastewater sludge in a batch fermenter

Alam, Md. Zahangir and Fakhru’l-Razi, Ahmadun (2002) Effect of agitation and aeration on bioconversion of domestic wastewater sludge in a batch fermenter. Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances and Environmental Engineering, 37 (6). pp. 1087-1097. ISSN 1093-4529

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Abstract

Effects of agitation and aeration rate on microbial treatment of domestic wastewater sludge were investigated in a batch fermenter using mixed culture of Penicillium corylophilum and Aspergillus niger. It was found that liquid state bioconversion (LSB) of wastewater sludge was highly influenced by the effects of agitation and aeration. The maximum production of sludge cake and reduction of organic substances in treated sludge were recorded at 150–200 rpm of agitation speed and 0.5 vvm of aeration rate after 72 h of treatment. No effective results were observed at higher rate of agitation (300 rpm) and aeration (1.5 vvm) as compared to optimum values. The results showed that the minimum level of air saturation (pO2) was adequate to maintain the bioconversion process.

Item Type: Article (Journal)
Additional Information: 4157/5013
Uncontrolled Keywords: Aeration; Agitation; Liquid state bioconversion process; Domestic wastewater sludge; Fungal treatment
Subjects: T Technology > TP Chemical technology
T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User: Dr. Md. Zahangir Alam
Date Deposited: 17 Jul 2013 13:29
Last Modified: 17 Jul 2013 13:29
URI: http://irep.iium.edu.my/id/eprint/5013

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