Effect of cod loading rate on an upflow anaerobic sludge blanket reactor during anaerobic digestion of palm oil mill effluent with butyrate

Palm oil Mill Effluent (POME) with concentrated butyrate was treated in a 4.5 l upflow anaerobic sludge blanket reactor (UASBR), run over a range of influent concentrations (16.5–46.0 g-COD l−1), chemical oxygen demand (COD) loading rates (1.5–11.5 g-CODl−1d−1) and 11–4 days hydraulic retention time...

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Main Authors:	Anwar, Ahmad, Ghufran, Rumana, Zularisam, A. W.
Format:	Article
Language:	English
Published:	Taylor & Francis 2012
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/26957/ http://umpir.ump.edu.my/id/eprint/26957/ http://umpir.ump.edu.my/id/eprint/26957/ http://umpir.ump.edu.my/id/eprint/26957/1/Effect%20of%20cod%20loading%20rate%20on%20an%20upflow%20anaerobic%20sludge%20blanket%20.pdf

id	ump-26957
recordtype	eprints
spelling	ump-269572020-03-20T02:56:18Z http://umpir.ump.edu.my/id/eprint/26957/ Effect of cod loading rate on an upflow anaerobic sludge blanket reactor during anaerobic digestion of palm oil mill effluent with butyrate Anwar, Ahmad Ghufran, Rumana Zularisam, A. W. TA Engineering (General). Civil engineering (General) Palm oil Mill Effluent (POME) with concentrated butyrate was treated in a 4.5 l upflow anaerobic sludge blanket reactor (UASBR), run over a range of influent concentrations (16.5–46.0 g-COD l−1), chemical oxygen demand (COD) loading rates (1.5–11.5 g-CODl−1d−1) and 11–4 days hydraulic retention time (HRT) at 37 °C by maintaining pH between 6.5–7.5. The process consistently removed 97–99% of COD at loading rates up to 1.5–4.8 g-COD l−1d−1 by varying HRT (11–7.2 days). Butyrate is an important intermediate in the anaerobic degradation of organic matter. In sulphate-depleted environment, butyrate in POME (BOD/COD ratio of 0.5) is β-oxidised to acetate and hydrogen, by obligate proton reducers in syntrophic association with hydrogen utilizing methanogens. The conversion of acetate to methane appeared to be rate limiting step. Maximum biogas (20.17 ll−1d−1) and methane production (16.2 ll−1d−1) were obtained at COD loading rate of 4.80 gl−1d−1 and HRT of 7.2 days. The biogas and methane production were higher in the presence of butyrate compared to control. The methane content of the biogas was in the range of 70–80% throughout the study while in control it was 60–65%. Finding of this study clearly indicates the successful treatment of POME with butyrate in UASBR. Taylor & Francis 2012 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/26957/1/Effect%20of%20cod%20loading%20rate%20on%20an%20upflow%20anaerobic%20sludge%20blanket%20.pdf Anwar, Ahmad and Ghufran, Rumana and Zularisam, A. W. (2012) Effect of cod loading rate on an upflow anaerobic sludge blanket reactor during anaerobic digestion of palm oil mill effluent with butyrate. Journal of Environmental Engineering and Landscape Management, 20 (4). pp. 256-264. ISSN 1648-6897 https://doi.org/10.3846/16486897.2012.656647 https://doi.org/10.3846/16486897.2012.656647
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Anwar, Ahmad Ghufran, Rumana Zularisam, A. W. Effect of cod loading rate on an upflow anaerobic sludge blanket reactor during anaerobic digestion of palm oil mill effluent with butyrate
description	Palm oil Mill Effluent (POME) with concentrated butyrate was treated in a 4.5 l upflow anaerobic sludge blanket reactor (UASBR), run over a range of influent concentrations (16.5–46.0 g-COD l−1), chemical oxygen demand (COD) loading rates (1.5–11.5 g-CODl−1d−1) and 11–4 days hydraulic retention time (HRT) at 37 °C by maintaining pH between 6.5–7.5. The process consistently removed 97–99% of COD at loading rates up to 1.5–4.8 g-COD l−1d−1 by varying HRT (11–7.2 days). Butyrate is an important intermediate in the anaerobic degradation of organic matter. In sulphate-depleted environment, butyrate in POME (BOD/COD ratio of 0.5) is β-oxidised to acetate and hydrogen, by obligate proton reducers in syntrophic association with hydrogen utilizing methanogens. The conversion of acetate to methane appeared to be rate limiting step. Maximum biogas (20.17 ll−1d−1) and methane production (16.2 ll−1d−1) were obtained at COD loading rate of 4.80 gl−1d−1 and HRT of 7.2 days. The biogas and methane production were higher in the presence of butyrate compared to control. The methane content of the biogas was in the range of 70–80% throughout the study while in control it was 60–65%. Finding of this study clearly indicates the successful treatment of POME with butyrate in UASBR.
format	Article
author	Anwar, Ahmad Ghufran, Rumana Zularisam, A. W.
author_facet	Anwar, Ahmad Ghufran, Rumana Zularisam, A. W.
author_sort	Anwar, Ahmad
title	Effect of cod loading rate on an upflow anaerobic sludge blanket reactor during anaerobic digestion of palm oil mill effluent with butyrate
title_short	Effect of cod loading rate on an upflow anaerobic sludge blanket reactor during anaerobic digestion of palm oil mill effluent with butyrate
title_full	Effect of cod loading rate on an upflow anaerobic sludge blanket reactor during anaerobic digestion of palm oil mill effluent with butyrate
title_fullStr	Effect of cod loading rate on an upflow anaerobic sludge blanket reactor during anaerobic digestion of palm oil mill effluent with butyrate
title_full_unstemmed	Effect of cod loading rate on an upflow anaerobic sludge blanket reactor during anaerobic digestion of palm oil mill effluent with butyrate
title_sort	effect of cod loading rate on an upflow anaerobic sludge blanket reactor during anaerobic digestion of palm oil mill effluent with butyrate
publisher	Taylor & Francis
publishDate	2012
url	http://umpir.ump.edu.my/id/eprint/26957/ http://umpir.ump.edu.my/id/eprint/26957/ http://umpir.ump.edu.my/id/eprint/26957/ http://umpir.ump.edu.my/id/eprint/26957/1/Effect%20of%20cod%20loading%20rate%20on%20an%20upflow%20anaerobic%20sludge%20blanket%20.pdf
first_indexed	2023-09-18T22:42:18Z
last_indexed	2023-09-18T22:42:18Z
_version_	1777416995684220928

Effect of cod loading rate on an upflow anaerobic sludge blanket reactor during anaerobic digestion of palm oil mill effluent with butyrate

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