Energy yields from anaerobic digestion of palm oil mill effluent
Three different suspended-growth anaerobic digestion configurations-the mesophilic one-stage, the mesophilic two-phase and the thermophilic one-stage, were used to treat palm oil mill effluent (POME) and their performances compared. The mesophilic two-phase process showed the highest energy yields w...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | en |
| Published: |
Elsevier Ltd.
1987
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| Online Access: | http://psasir.upm.edu.my/id/eprint/116042/1/116042.pdf http://psasir.upm.edu.my/id/eprint/116042/ https://linkinghub.elsevier.com/retrieve/pii/0269748387900590 |
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| Summary: | Three different suspended-growth anaerobic digestion configurations-the mesophilic one-stage, the mesophilic two-phase and the thermophilic one-stage, were used to treat palm oil mill effluent (POME) and their performances compared. The mesophilic two-phase process showed the highest energy yields which reached 20 542 J g-1 COD utilized at a hydraulic retention time of 31 days. However, high energy yields did not coincide with high TCOD removals. The latter was a characteristic of the thermophilic process. The relatively poor TCOD removal in the two-phase system was due to its lower efficiency in VSS removal. At hydraulic retention times of 25 days and more the mesophilic one-stage process had higher energy yields than the thermophilic process. Anaerobic digestion was found to be an effective means for POME treatment. © 1987. |
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