Hydrothermal Treatment of Palm Oil Mill Effluent (POME) under Oxidative and Non-oxidative Conditions

Zhan, Sheng Lee and Chin, Kui Cheng and Chin, Sim Yee (2020) Hydrothermal Treatment of Palm Oil Mill Effluent (POME) under Oxidative and Non-oxidative Conditions. In: IOP Conference Series: Materials Science and Engineering, International Conference on Engineering and Industrial Technology (ICEIT 2020), 11-13 September 2020 , Pattaya, Thailand. pp. 1-9., 965 (012002). ISSN 1757-899X

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The performances of oxidative (OHT) and non-oxidative (NOHT) subcritical hydrothermal treatments of palm oil mill effluent (POME) were investigated. The experiments were performed in a pressurised 500 mL-autoclave at different temperature (493 K – 533 K) and reaction time (2 h – 8 h). At 533 K and 8 h, the OHT reaction showed the highest removals of 5-day biochemical oxygen demand (BOD5) and chemical oxygen demand (COD), recording 87.30% and 71.23% respectively, with the pH of liquid product attained 6.5 from an initial value of 3.5. The reduction of COD and BOD5 in NOHT was lower than that in OHT, which were 61.43% and 68.02%, respectively. The mechanism of OHT reaction was via the free radical's pathway. In contrast, the organic compounds originally present in POME degraded into water-soluble products, accompanied by deoxygenation that consisted of decarboxylation and dehydration during the NOHT.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: Palm Oil Mill Effluent (POME); Biochemical Oxygen Demand (BOD5); Chemical Oxygen Demand (COD)
Subjects: T Technology > T Technology (General)
T Technology > TC Hydraulic engineering. Ocean engineering
Faculty/Division: Faculty of Chemical and Process Engineering Technology
Depositing User: Pn. Hazlinda Abd Rahman
Date Deposited: 20 Jun 2022 05:01
Last Modified: 20 Jun 2022 05:01
URI: http://umpir.ump.edu.my/id/eprint/28841
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