Impact of 5-hydroxy methyl furfural on continuous hydrogen production from galactose and glucose feedstock with periodic recovery |
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| Affiliation: | 1. School of Civil and Environmental Engineering, Yonsei University, Seoul, 03722, Republic of Korea;2. Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam;3. Institute of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Box 8600 Forus, Stavanger, 4036, Norway;4. CSIR-National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur, 440 020, India;5. Institute of Chemical and Environmental Process, JEONJIN ENTECH,.LTD, Busan, 46729, Republic of Korea;1. School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea;2. Technology Development Center, Samsung Engineering Co. Ltd, Seoul 05288, Republic of Korea;1. Department of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Republic of Korea;2. KU-KIST Green School, Graduate School of Energy and Environment, Korea University, Seoul 02841, Republic of Korea;3. Clean Innovation Technology Group, Korea Institute of Industrial Technology (KITECH), Jeju-si 63243, Republic of Korea;4. School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea;5. Intelligent Sustainable Materials R&D Group, Korea Institute of Industrial Technology (KITECH), Cheonan-si 31056, Republic of Korea;1. School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 136-714, South Korea;2. IT Convergence Materials R&D Group, Korea Institute of Industrial Technology, Chungnam 330-825, South Korea;3. Department of Environmental Engineering, Daegu University, Gyeongbuk 712-714, South Korea;1. Faculty of Environment and Labour Safety, Ton Duc Thang University (TDTU), Ho Chi Minh City, Viet Nam;2. Sustainable Environmental Process Research Institute, Daegu University, Gyeongbuk 38453, Republic of Korea;3. Department of Civil Engineering, Daegu University, Gyeongbuk 38453, Republic of Korea;4. Department of Civil, Environmental and Architectural Engineering, Korea University, Anam-Dong, Seongbuk-gu, Seoul 02841, Republic of Korea;5. Department of Environmental Engineering, Daegu University, Gyeongbuk 38453, Republic of Korea;6. Center for Materials Cycles and Waste Management Research, National Institute for Environmental Studies, Tsukuba, Japan;1. School of Civil, Environmental and Architectural Engineering, Korea University, Anam-Dong, Seongbuk-gu, Seoul 136-714, South Korea;2. Department of Environmental Engineering, Daegu University, Gyeongsan, Gyeongbuk 712-714, South Korea |
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| Abstract: | A continuous stirred tank reactor (CSTR) was operated for more than 120 days with fixed hydraulic retention time of 6 h at mesophilic temperature along with a periodic recovery phase towards hydrogen production and stimulated by the existence of 5-hydroxy methyl furfural concentration (5-HMF). Interestingly, CSTR mixed with a small amount of 5-HMF, range of 0.3–0.6 g/L showed at least 50% higher hydrogen production rate than control without 5-HMF. However, when 5-HMF concentration was higher than 0.6 g/L, the performance was significantly inhibited. The bacterial community shifted by 5-HMF from Clostridium-dominated to Lactobacillus-dominated population. Regardless of the remain 5-HMF concentration in CSTR, the microbial community and hydrogen producing performance were restored by stop mixing the 5-HMF from the feedstock. The high-rate hydrogen production of 20.0 ± 1.8 L H2/L/d was achieved in the presence of 5-HMF using the threshold information and recovery strategy. |
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| Keywords: | Biohydrogen CSTR 5-HMF Recovery Inhibition qPCR |
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