Effect of agitation and aeration on bioconversion of domestic wastewater sludge in a batch fermenter
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 t...
| Main Authors: | , |
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| Format: | Article |
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Informa UK Limited
2002
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| Online Access: | http://psasir.upm.edu.my/id/eprint/115462/ |
| _version_ | 1848866782967758848 |
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| author | Alam, Md. Zahangir Fakhru'l-Razi, A. |
| author_facet | Alam, Md. Zahangir Fakhru'l-Razi, A. |
| author_sort | Alam, Md. Zahangir |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-15T14:26:05Z |
| format | Article |
| id | upm-115462 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T14:26:05Z |
| publishDate | 2002 |
| publisher | Informa UK Limited |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1154622025-03-04T08:14:47Z http://psasir.upm.edu.my/id/eprint/115462/ Effect of agitation and aeration on bioconversion of domestic wastewater sludge in a batch fermenter Alam, Md. Zahangir Fakhru'l-Razi, A. 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. Informa UK Limited 2002 Article PeerReviewed Alam, Md. Zahangir and Fakhru'l-Razi, A. (2002) Effect of agitation and aeration on bioconversion of domestic wastewater sludge in a batch fermenter. Journal of Environmental Science and Health, Part A, 37 (6). pp. 1087-1097. ISSN 1093-4529; eISSN 1532-4117 https://www.tandfonline.com/doi/full/10.1081/ESE-120004525 10.1081/ESE-120004525 |
| spellingShingle | Alam, Md. Zahangir Fakhru'l-Razi, A. Effect of agitation and aeration on bioconversion of domestic wastewater sludge in a batch fermenter |
| title | Effect of agitation and aeration on bioconversion of domestic wastewater sludge in a batch fermenter |
| title_full | Effect of agitation and aeration on bioconversion of domestic wastewater sludge in a batch fermenter |
| title_fullStr | Effect of agitation and aeration on bioconversion of domestic wastewater sludge in a batch fermenter |
| title_full_unstemmed | Effect of agitation and aeration on bioconversion of domestic wastewater sludge in a batch fermenter |
| title_short | Effect of agitation and aeration on bioconversion of domestic wastewater sludge in a batch fermenter |
| title_sort | effect of agitation and aeration on bioconversion of domestic wastewater sludge in a batch fermenter |
| url | http://psasir.upm.edu.my/id/eprint/115462/ http://psasir.upm.edu.my/id/eprint/115462/ http://psasir.upm.edu.my/id/eprint/115462/ |