Effects of process,operational and environmental variables on biohydrogen production using palm oil mill effluent (POME) |
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Authors: | Bidattul Syirat Zainal Ali Akhbar Zinatizadeh Ong Hwai Chyuan Nuruol Syuhadaa Mohd Shaliza Ibrahim |
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Affiliation: | 1. Department of Civil Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia;2. Department of Applied Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran;3. Department of Mechanical Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia |
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Abstract: | A batch study for biohydrogen production was conducted using raw palm oil mill effluent (POME) and POME sludge as a feed and inoculum respectively. Response Surface Methodology (RSM) was used to design the experiments. Experiments were conducted at different reaction temperatures (30–50 °C), inoculum size to substrate ratios (I:S) and reaction times (8–24 h). An optimum condition of biohydrogen production was achieved with COD removal efficiency of 21.95% with hydrogen yield of 28.47 ml H2 g?1 COD removed. The I:S ratio was 40:60, with reaction temperature of 50 °C at 8 h of reaction time. The study showed that a lower substrate concentration (less than 20 g L?1) for biohydrogen production using pre-settled POME was achievable, with optimum HRT of 8 h under thermophilic condition (50 °C). This study also found that pre-settled POME is feasible to be used as a substrate for biohydrogen production under thermophilic condition. |
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Keywords: | Palm oil mill effluent (POME) Biohydrogen COD removal Response surface methodology (RSM) |
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