Mohamad Mokhtar, Ibrahim and Zulkifly, Jemaat and Nour, Abdurahman Hamid (2021) Performance and kinetic evaluation of palm oil mill effluent (POME) digestion in a continuous high rate up-flow anaerobic sludge blanket (UASB) bioreactor. Materials Science Forum, 1025. pp. 141-149. ISSN 1662-9752. (Published)
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Abstract
In this study, we operated a 10 litre upflow anaerobic sludge blanket (UASB) reactor continuously at mesophilic temperature (38 °C). UASB reactor performance was evaluated based on the impact of the hydraulic retention time (HRT) ranged between 1 and 5 days and influent COD concentration in the range of 4540 mgL-1 and 20,820 mgL-1. The pH of the UASB was maintained in the range of 6.5 to 7.2 by adding buffering solution containing of 5 gL-1 of calcium oxide (CaO) derived from waste cockle shells. A simplified Monod’s model was employed to describe kinetics of anaerobic digestion of POME by using UASB reactor at organic loading rates (OLR) in the range between 1.17 g.CODL-1d-1 and 17.22 g.CODL-1d-1. A high COD degradation rate of 93.26 % was recorded at OLR of 3.92 g.COD L-1d-1 and HRT of 4 days. The UASB reactor generated the maximum biogas production at 34.95 L/d when operated at HRT 1 day and OLR 7.70 g.CODL-1d-1. The proposed kinetic equations are applicable to describe anaerobic treatment of palm oil mill effluent with the UASB reactor. Biokinetic coefficients evaluated were, the growth yield (YG), 3.906 g VSS/g CODremoved.d-1; the specific biomass decay (b), 0.233 d-1; the specific biomass growth rate (μmax), 1.861 d-1; and the saturation constant (Ks), 3.459 g-CODL-1.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | UASB; POME treatment; Cockle shells; Anaerobic treatment; Monod model |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Institute of Postgraduate Studies Faculty of Chemical and Process Engineering Technology |
| Depositing User: | Miss. Ratna Wilis Haryati Mustapa |
| Date Deposited: | 27 Sep 2022 03:12 |
| Last Modified: | 30 Sep 2022 08:30 |
| URI: | http://umpir.ump.edu.my/id/eprint/35241 |
| Download Statistic: | View Download Statistics |
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