Ozonation aided mesophilic biohydrogen production from palm oil mill effluent |
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| Affiliation: | 1. The Biosensor and Bioelectronics Technology Centre, King Mongkut''s University of Technology North Bangkok, 10800, Thailand;2. Department of Agro-Industrial, Food and Environmental Technology, Faculty of Applied Science, King Mongkut''s University of Technology North Bangkok, 10800, Thailand;3. The Research and Technology Center for Renewable Products and Energy, King Mongkut''s University of Technology North Bangkok, Bangkok, 10800, Thailand;1. ERE & BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China;2. Energy Innovation Software Co. Ltd., Beijing, 100094, China;3. SINOPEC Petroleum E&P Research Institute, Beijing, 100083, China;4. China University of Geosciences, Beijing, 100083, China;1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, PR China;2. ERE & BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China;3. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;4. Department of Oil-Gas Field Development Engineering, College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China;1. Department of Functional Material Research, Central Iron and Steel Research Institute, Beijing 100081, China;2. Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou 014010, China;1. College of Pipeline and Civil Engineering, China University of Petroleum, No.66 Changjiang West Road, Qingdao, 266580, PR China;2. Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Weiyang University Park, Xi''an, 710021, PR China;3. School of Petroleum Engineering, China University of Petroleum, No.66 Changjiang West Road, Qingdao, 266580, PR China;4. School of Earth and Space Sciences, Peking University, No.5 Yiheyuan Road Haidian District, Beijing, 100871, PR China;5. Institute of Petroleum Engineering, Shengli Oilfield Company, SINOPEC, Dongying, 257000, PR China |
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| Abstract: | Ozone pretreatment of palm oil mill effluent (POME) was employed to improve sustrate biodegradability prior to biological H2 production. The H2 production was conducted at varing pHs from 4.0 to 6.0 to examine the impact of pH on the H2 mesophilic production (37 °C). The optimal pH for H2 production was 6.0 for both raw and ozonated POME. The POME concentrations were greatly influenced the yields and rates of H2 production. At the optimal pH, the maximum H2 production yield of 182 ± 7.2 mL.g−1 COD (7.96 mmoL.g−1 COD) was achieved at the ozonated POME concentration of 30,000 mg COD.L−1. The maximum H2 production rate (Rmax) of 43.1 ± 2.5 mL.h−1 was obtained at the ozonated POME concentration of 25,000 mg COD.L−1. The highest total COD removal was 44% at of 15,000 mg COD.L−1 ozonated POME. Acetic and butyric acids were dominant products during H2 fermentation and tended to increase with the increased POME concentrations. Ozonation as a pretreatment process showed significant enhancement of the POME biodegradability , and subsequently improved the H2 production H2. |
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| Keywords: | Ozonation Palm oil mill effluent (POME) Mesophilic |
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