Solid State Culture Conditions for Composting Sewage Sludge
Composting is applied to treat sewage sludge from treatment plants to enhance its quality and suitability for agricultural use. In this work the optimal conditions for composting sewage sludge from domestic wastewater treatment plants in a horizontal drum bioreactor (HDB) were investigated. This stu...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IIUM Press, International Islamic University Malaysia
2012-10-01
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| Series: | International Islamic University Malaysia Engineering Journal |
| Online Access: | http://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/386 |
| _version_ | 1818824974266269696 |
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| author | N.A. Kabbashi A. Fakhru’l-Razi K.B. Ramachandran |
| author_facet | N.A. Kabbashi A. Fakhru’l-Razi K.B. Ramachandran |
| author_sort | N.A. Kabbashi |
| collection | DOAJ |
| description | Composting is applied to treat sewage sludge from treatment plants to enhance its quality and suitability for agricultural use. In this work the optimal conditions for composting sewage sludge from domestic wastewater treatment plants in a horizontal drum bioreactor (HDB) were investigated. This study investigated the physico-chemical conditions affecting the use of filamentous fungi in composting. The average number of faecal coliforms was 2.3 107 bacteria/g waste dry weight at the beginning of the composting process, and decreased considerably to 8.2 103, 8.1 103, 8.5 103, 8.0 103,and 8.4 103 bacteria/g, respectively for experiments T1 to T5. This decrease was presumably the result of raising temperature. The phase of hygienisation was marked by a very significant decrease in the number of E. coli cells (1.8 107, to 3.7 103, 3.8 103, 3.3 103, 3.2 103, and 3.6 103 bacteria/g) for T1 to T5 experiments, respectively: A second aspect was the investigation of a possible reduction of hazardous pollutants. The highest concentration was for Fe and the lowest for Pb, showing that Fe is the most loosely bound to the sewage sludge organic matrix and Pb the most strongly bound, the Cd reduction by composting was more than 50%.
Keywords: Sewage sludge, compost, horizontal drum bioreactor, hazardous. |
| first_indexed | 2024-12-19T00:04:23Z |
| format | Article |
| id | doaj.art-699804afd84a42a5924945a81f2ff6bc |
| institution | Directory Open Access Journal |
| issn | 1511-788X 2289-7860 |
| language | English |
| last_indexed | 2024-12-19T00:04:23Z |
| publishDate | 2012-10-01 |
| publisher | IIUM Press, International Islamic University Malaysia |
| record_format | Article |
| series | International Islamic University Malaysia Engineering Journal |
| spelling | doaj.art-699804afd84a42a5924945a81f2ff6bc2022-12-21T20:46:19ZengIIUM Press, International Islamic University MalaysiaInternational Islamic University Malaysia Engineering Journal1511-788X2289-78602012-10-016110.31436/iiumej.v6i1.386Solid State Culture Conditions for Composting Sewage SludgeN.A. Kabbashi0A. Fakhru’l-Razi1K.B. Ramachandran2Department of Biotechnology Engineering, International Islamic University Malaysia, Jalan Gombak, 53100 Kuala Lumpur. Malaysia.Department of Chemical & Environmental Engineering, University Putra Malaysia, 43400 UPM Serdang, Malaysia.Department of Chemical Engineering, University of Malaya, 50602, Kuala Lumpur, Malaysia.Composting is applied to treat sewage sludge from treatment plants to enhance its quality and suitability for agricultural use. In this work the optimal conditions for composting sewage sludge from domestic wastewater treatment plants in a horizontal drum bioreactor (HDB) were investigated. This study investigated the physico-chemical conditions affecting the use of filamentous fungi in composting. The average number of faecal coliforms was 2.3 107 bacteria/g waste dry weight at the beginning of the composting process, and decreased considerably to 8.2 103, 8.1 103, 8.5 103, 8.0 103,and 8.4 103 bacteria/g, respectively for experiments T1 to T5. This decrease was presumably the result of raising temperature. The phase of hygienisation was marked by a very significant decrease in the number of E. coli cells (1.8 107, to 3.7 103, 3.8 103, 3.3 103, 3.2 103, and 3.6 103 bacteria/g) for T1 to T5 experiments, respectively: A second aspect was the investigation of a possible reduction of hazardous pollutants. The highest concentration was for Fe and the lowest for Pb, showing that Fe is the most loosely bound to the sewage sludge organic matrix and Pb the most strongly bound, the Cd reduction by composting was more than 50%. Keywords: Sewage sludge, compost, horizontal drum bioreactor, hazardous.http://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/386 |
| spellingShingle | N.A. Kabbashi A. Fakhru’l-Razi K.B. Ramachandran Solid State Culture Conditions for Composting Sewage Sludge International Islamic University Malaysia Engineering Journal |
| title | Solid State Culture Conditions for Composting Sewage Sludge |
| title_full | Solid State Culture Conditions for Composting Sewage Sludge |
| title_fullStr | Solid State Culture Conditions for Composting Sewage Sludge |
| title_full_unstemmed | Solid State Culture Conditions for Composting Sewage Sludge |
| title_short | Solid State Culture Conditions for Composting Sewage Sludge |
| title_sort | solid state culture conditions for composting sewage sludge |
| url | http://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/386 |
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