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Performance evaluation of an anaerobic hybrid digester treating palm oil mill effluent

Performance evaluation of an anaerobic hybrid digester treating palm oil mill effluent
Performance evaluation of an anaerobic hybrid digester treating palm oil mill effluent
A high-strength palm oil mill effluent was treated using a hybrid anaerobic digester, in which the bottom two-thirds were occupied by a sludge blanket and the upper one-third by submerged PVC rings, under mesophilic conditions. The influent COD concentration varied considerably (11.6-65.0 g/1). The digester was subjected to quantitative increases in organic loading rate (OLR) from 3.3 to 18.6 kg COD/m3 day at a set hydraulic retention time (HRT) of 3.5 days. The data showed that the anaerobic digestion process is feasible for the treatment of, and methane generation from, palm oil mill effluent without pretreatment. A COD removal efficiency and methane yield of 92.3% and 0.335 m3/kg CODremoved, respectively, could be achieved at an OLR of 16.2 kg COD/m3 day. The data also showed that the hybrid digester could be maintained at a HRT of 3.5 days with an OLR of 18.6 kg COD/m3 day. This rate is significantly faster than the rates achieved in previously reported studies. Decreasing digester efficiency was basically characterized by accumulation of propionic acid.
palm oil mill effluent (pome), anaerobic digestion, hybrid digester, organic loading rate, cod removal efficiency, methane yield
1093-4529
1379-1393
Borja, R.
ed513484-04ff-4424-ab79-dc715ca63146
Banks, C.J.
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
Khalfaoui, B.
3029b38c-b7db-40cb-aca5-fbd3675784d8
Martin, A.
169f0afa-12fc-43b5-a72d-7bfc493aa170
Borja, R.
ed513484-04ff-4424-ab79-dc715ca63146
Banks, C.J.
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
Khalfaoui, B.
3029b38c-b7db-40cb-aca5-fbd3675784d8
Martin, A.
169f0afa-12fc-43b5-a72d-7bfc493aa170

Borja, R., Banks, C.J., Khalfaoui, B. and Martin, A. (1996) Performance evaluation of an anaerobic hybrid digester treating palm oil mill effluent. Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances and Environmental Engineering, 31 (6), 1379-1393. (doi:10.1080/10934529609376430).

Record type: Article

Abstract

A high-strength palm oil mill effluent was treated using a hybrid anaerobic digester, in which the bottom two-thirds were occupied by a sludge blanket and the upper one-third by submerged PVC rings, under mesophilic conditions. The influent COD concentration varied considerably (11.6-65.0 g/1). The digester was subjected to quantitative increases in organic loading rate (OLR) from 3.3 to 18.6 kg COD/m3 day at a set hydraulic retention time (HRT) of 3.5 days. The data showed that the anaerobic digestion process is feasible for the treatment of, and methane generation from, palm oil mill effluent without pretreatment. A COD removal efficiency and methane yield of 92.3% and 0.335 m3/kg CODremoved, respectively, could be achieved at an OLR of 16.2 kg COD/m3 day. The data also showed that the hybrid digester could be maintained at a HRT of 3.5 days with an OLR of 18.6 kg COD/m3 day. This rate is significantly faster than the rates achieved in previously reported studies. Decreasing digester efficiency was basically characterized by accumulation of propionic acid.

Full text not available from this repository.

More information

Published date: July 1996
Additional Information: Borja R, Banks C. J., Khalfaoui B, Martin A, (1996). "Performance evaluation of an anaerobic hybrid digester treating palm oil mill effluent." Journal of Environmental Health Part A- Environmental Science and Engineering and Toxic and Hazardous substance control, 31(6), 1379-1393
Keywords: palm oil mill effluent (pome), anaerobic digestion, hybrid digester, organic loading rate, cod removal efficiency, methane yield

Identifiers

Local EPrints ID: 75507
URI: https://eprints.soton.ac.uk/id/eprint/75507
ISSN: 1093-4529
PURE UUID: b635511d-7648-4876-8e21-4dd14121d386

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 17 Jul 2019 00:15

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