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Optimization of enzymatic pretreatment process for enhanced biogas production from palm oil mill effluent

Tajul Islam, M S and Alam, Md Zahangir and Mamun, Abdullah Al and Moniruzzaman, Muhammad (2020) Optimization of enzymatic pretreatment process for enhanced biogas production from palm oil mill effluent. Journal of Energy and Environment. pp. 1-9. ISSN 2076-2895 E-ISSN 2076-2909 (In Press)

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Anaerobic digestion (AD) of palm oil mill effluent (POME) for biogas production by four step processes such as hydrolysis, acidogenesis, acetogenesis and methanogenesis in which hydrolysis is pondered as a rate limiting step. To achieve high yield of biogas in the AD, enzymatic hydrolysis as the pretreatment method was applied to overcome the current limitation of the existing plants. Therefore, an optimization study was carried out to evaluate AD performance for biogas production. Among the parameters, three factors i.e. cellulase enzyme dose, pH and total suspended solids (TSS) were studied by the face-centered central composite design (FCCCD) under the response surface methodology (RSM) based on lipase pre-treated POME. The results showed that the maximum of 835 ml biogas was obtained with 85% COD removal from 50 ml of POME substrate after 10 days of operation while 290 ml biogas produced from control (without pretreatment). The optimum process conditions were at pH 5 and TSS of 1.5% and enzyme loading 200 CMC/ml. High coefficient of R2 value of 0.994 indicated the satisfactory fit of the model.

Item Type: Article (Journal)
Additional Information: 4157/87284
Uncontrolled Keywords: biogas, enzyme, pre-treatment, lignocellulose, anaerobic digestion, lipase,cellulase
Subjects: T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User: Dr. Md. Zahangir Alam
Date Deposited: 08 Jan 2021 10:13
Last Modified: 08 Jan 2021 10:13
URI: http://irep.iium.edu.my/id/eprint/87284

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