Comparison of UASB and EGSB reactors performance, for treatment of raw and deoiled palm oil mill effluent (POME)

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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@article{255b522429de48e1b287fa4434891aa4,
title = "Comparison of UASB and EGSB reactors performance, for treatment of raw and deoiled palm oil mill effluent (POME)",
publisher = "Elsevier BV",
author = "Cheng Fang and Sompong O-Thong and Kanokwan Boe and Irini Angelidaki",
year = "2011",
doi = "10.1016/j.jhazmat.2011.02.025",
volume = "189",
number = "1-2",
pages = "229--234",
journal = "Journal of Hazardous Materials",
issn = "0304-3894",

}

RIS

TY - JOUR

T1 - Comparison of UASB and EGSB reactors performance, for treatment of raw and deoiled palm oil mill effluent (POME)

A1 - Fang,Cheng

A1 - O-Thong,Sompong

A1 - Boe,Kanokwan

A1 - Angelidaki,Irini

AU - Fang,Cheng

AU - O-Thong,Sompong

AU - Boe,Kanokwan

AU - Angelidaki,Irini

PB - Elsevier BV

PY - 2011

Y1 - 2011

N2 - Anaerobic digestion of palm oil mill effluent (POME) and deoiled POME was investigated both in batch assays and continuous reactor experiments using up-flow anaerobic sludge blanket (UASB) and expanded granular sludge bed (EGSB) reactors. The methane potential determined from batch assays of POME and deoiled POME was 503 and 610mL-CH4/gVS-added, respectively. For the treatment of POME in continuously fed reactors, both in UASB and EGSB reactors more than 90% COD removal could be obtained, at HRT of 5 days, corresponding to OLR of 5.8gVS/(L-reactor.d). Similar methane yields of 436–438mL-CH4/gVS-added were obtained for UASB and EGSB respectively. However, for treatment of deoiled POME, both UASB and EGSB reactors could operate at lower OLR of 2.6gVS/(L-reactor.d), with the methane yield of 600 and 555mL-CH4/gVS-added for UASB and EGSB, respectively. The higher methane yield achieved from the deoiled POME was attributed to lower portion of biofibers which are more recalcitrant compared the rest of organic matter in POME. The UASB reactor was found to be more stable than EGSB reactor under the same OLR, as could be seen from lower VFA concentration, especially propionic acid, compared to the EGSB reactor.

AB - Anaerobic digestion of palm oil mill effluent (POME) and deoiled POME was investigated both in batch assays and continuous reactor experiments using up-flow anaerobic sludge blanket (UASB) and expanded granular sludge bed (EGSB) reactors. The methane potential determined from batch assays of POME and deoiled POME was 503 and 610mL-CH4/gVS-added, respectively. For the treatment of POME in continuously fed reactors, both in UASB and EGSB reactors more than 90% COD removal could be obtained, at HRT of 5 days, corresponding to OLR of 5.8gVS/(L-reactor.d). Similar methane yields of 436–438mL-CH4/gVS-added were obtained for UASB and EGSB respectively. However, for treatment of deoiled POME, both UASB and EGSB reactors could operate at lower OLR of 2.6gVS/(L-reactor.d), with the methane yield of 600 and 555mL-CH4/gVS-added for UASB and EGSB, respectively. The higher methane yield achieved from the deoiled POME was attributed to lower portion of biofibers which are more recalcitrant compared the rest of organic matter in POME. The UASB reactor was found to be more stable than EGSB reactor under the same OLR, as could be seen from lower VFA concentration, especially propionic acid, compared to the EGSB reactor.

KW - EGSB

KW - High-rate anaerobic digestion

KW - Palm oil mill effluent

KW - Biogas

KW - UASB

U2 - 10.1016/j.jhazmat.2011.02.025

DO - 10.1016/j.jhazmat.2011.02.025

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

SN - 0304-3894

IS - 1-2

VL - 189

SP - 229

EP - 234

ER -