Effects of applied voltage on hydrogen production rate of a single reactor BML with Clostridium sp. |
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| Institution: | 1. Graduate School of Engineering Science and Technology, National Yunlin University of Science and Technology (YunTech), Yunlin64002, Taiwan, ROC;2. Department and Graduate School of Safety, Health, and Environmental Engineering, YunTech, Yunlin 64002, Taiwan, ROC;1. State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China;1. Faculty of Caspian, College of Engineering, University of Tehran, Tehran, Iran;2. Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, P.O. Box 11365/8486, Tehran, Iran;1. Department of Chemistry, Adekunle Ajasin University, Nigeria;2. Department of Chemistry, The Federal University, Wukari, Nigeria;3. School of Chemical Engineering, Universiti Sains Malaysia, Malaysia;1. Department of Chemical and Environmental Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia;2. Department of Chemical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;3. School of Engineering and Information Technology, Universiti Malaysia Sabah, 88400 Kota Kinabalu, Sabah, Malaysia |
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| Abstract: | This study aimed to explore the influences of single-chamber systems with different applied voltage on bio-hydrogen (H2) production. The reactor used was the bio-electrochemically assisted microbial reactor (BEAMR) membrane-less (BEAMR-membrane-less, BML). The microbial dark fermentative H2 production method was adopted. After the hot screening process and the DNA sequencing, the domesticated dominant microflora was Clostridium sp. This study discussed the influences of the cases with (continuous and intermittent) and without applied voltage separately. The results showed that, the H2 production rate of the case with intermittent applied voltage (117 mL/h g VSS) of 0.24 V was increased of 1.7 folds higher than the without applied voltage (69 mL/h g VSS) and 1.3 folds higher than the case with continuous applied voltage (88.2 mL/h g VSS) of 0.24 V. The produced H2 concentration with intermittent applied voltage was 18.9% (18.6–19.1%) higher than the without applied voltage, while there was no significant difference with continuous applied voltage. |
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| Keywords: | Applied voltage BEAMR-membrane-less (BML) Bio-electrochemically Dark fermentative |
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