Start-up strategy of a thermophilic upflow anaerobic filter for treating palm oil mill effluent
A thermophilic upflow anaerobic filter treating palm oil mill effluent was started up in a dm3 laboratory-scale reactor. The reactor was operated continuously at a thermophilic temperature 55°C for over 10 weeks with increased loadings of chemical oxygen demand (COD) of 0.1-0.5 kg COD m-3 day-1. The...
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| Format: | Article |
| Language: | English |
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Elsevier
2003
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| Online Access: | http://psasir.upm.edu.my/id/eprint/112412/ http://psasir.upm.edu.my/id/eprint/112412/3/112412.pdf |
| _version_ | 1848865936108421120 |
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| author | Mustapha, S. Ashhuby, B. Rashid, M. Azni, I. |
| author_facet | Mustapha, S. Ashhuby, B. Rashid, M. Azni, I. |
| author_sort | Mustapha, S. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A thermophilic upflow anaerobic filter treating palm oil mill effluent was started up in a dm3 laboratory-scale reactor. The reactor was operated continuously at a thermophilic temperature 55°C for over 10 weeks with increased loadings of chemical oxygen demand (COD) of 0.1-0.5 kg COD m-3 day-1. The start-up strategy was accomplished over sequential increase of temperature of 0.5-1°C per day in which the mesophilic bacterial seed was gradually acclimatized to the thermophilic conditions. At these conditions, the reactor showed satisfactory results in organic removal efficiency (up to 97 and 94% for biological oxygen demand (BOD) and COD, respectively) and biogas production rates of 26.8-116.1 m-3 day-1 for organic loading rates varied from an initial value of 5.8 to 10.9 kg COD m-3 day-1. The thermophilic anaerobic filter was stable in terms of acidity and alkalinity. In this study, the start-up process of the thermophilic reactor was accomplished in a relatively short time and was stable under mesophilic conditions. |
| first_indexed | 2025-11-15T14:12:37Z |
| format | Article |
| id | upm-112412 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:12:37Z |
| publishDate | 2003 |
| publisher | Elsevier |
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| spelling | upm-1124122025-03-07T01:44:22Z http://psasir.upm.edu.my/id/eprint/112412/ Start-up strategy of a thermophilic upflow anaerobic filter for treating palm oil mill effluent Mustapha, S. Ashhuby, B. Rashid, M. Azni, I. A thermophilic upflow anaerobic filter treating palm oil mill effluent was started up in a dm3 laboratory-scale reactor. The reactor was operated continuously at a thermophilic temperature 55°C for over 10 weeks with increased loadings of chemical oxygen demand (COD) of 0.1-0.5 kg COD m-3 day-1. The start-up strategy was accomplished over sequential increase of temperature of 0.5-1°C per day in which the mesophilic bacterial seed was gradually acclimatized to the thermophilic conditions. At these conditions, the reactor showed satisfactory results in organic removal efficiency (up to 97 and 94% for biological oxygen demand (BOD) and COD, respectively) and biogas production rates of 26.8-116.1 m-3 day-1 for organic loading rates varied from an initial value of 5.8 to 10.9 kg COD m-3 day-1. The thermophilic anaerobic filter was stable in terms of acidity and alkalinity. In this study, the start-up process of the thermophilic reactor was accomplished in a relatively short time and was stable under mesophilic conditions. Elsevier 2003 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/112412/3/112412.pdf Mustapha, S. and Ashhuby, B. and Rashid, M. and Azni, I. (2003) Start-up strategy of a thermophilic upflow anaerobic filter for treating palm oil mill effluent. Process Safety and Environmental Protection, 81 (4). pp. 262-266. ISSN 0957-5820; eISSN: 1744-3598 https://linkinghub.elsevier.com/retrieve/pii/S0957582003710969 10.1205/095758203322299798 |
| spellingShingle | Mustapha, S. Ashhuby, B. Rashid, M. Azni, I. Start-up strategy of a thermophilic upflow anaerobic filter for treating palm oil mill effluent |
| title | Start-up strategy of a thermophilic upflow anaerobic filter for treating palm oil mill effluent |
| title_full | Start-up strategy of a thermophilic upflow anaerobic filter for treating palm oil mill effluent |
| title_fullStr | Start-up strategy of a thermophilic upflow anaerobic filter for treating palm oil mill effluent |
| title_full_unstemmed | Start-up strategy of a thermophilic upflow anaerobic filter for treating palm oil mill effluent |
| title_short | Start-up strategy of a thermophilic upflow anaerobic filter for treating palm oil mill effluent |
| title_sort | start-up strategy of a thermophilic upflow anaerobic filter for treating palm oil mill effluent |
| url | http://psasir.upm.edu.my/id/eprint/112412/ http://psasir.upm.edu.my/id/eprint/112412/ http://psasir.upm.edu.my/id/eprint/112412/ http://psasir.upm.edu.my/id/eprint/112412/3/112412.pdf |