Hydrogen production from sewage sludge solubilized in hot-compressed water using photocatalyst under light irradiation |
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| Affiliation: | 1. Department of Chemistry and Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjyo 1, Saga, 840-8502, Japan;2. Clarification Composite Materials Group, National Institute of Advanced Industrial Science and Technology, AIST Kyushu, Shuku-machi 807-1, Tosu, Saga, 841-0052, Japan;3. Department of Materials Science and Chemical Engineering, Kitakyushu National College of Technology, Shii 5-20-1, Kokuraminami-ku, Kitakyushu, Fukuoka, 802-0985, Japan;1. Department of Civil and Environmental Engineering, Center for Engineering Innovation, University of Windsor, 401 Sunset Ave., Windsor N9B 3P4, ON, Canada;2. Great Lakes Institute for Environmental Research, University of Windsor, 401 Sunset Ave., Windsor N9B 3P4, ON, Canada;3. Department of Biological Sciences, University of Windsor, 401 Sunset Ave., Windsor N9B 3P4, ON, Canada;1. School of Pharmaceutical and Materials Engineering, Taizhou University, Taizhou 318000, Zhejiang Province, China;2. Key Laboratory of Education Ministry for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu Province, China;1. College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China;2. Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin 541004, China;3. Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541004, China;4. Department of Environmental Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, 31900 Kampar, Perak, Malaysia;5. Department of Petrochemical Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, 31900 Kampar, Perak, Malaysia;6. Department of Fundamental and Applied Sciences, HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia;1. School of Civil Engineering, Hefei University of Technology, Hefei, 230009, PR China;2. Anhui Provincial Engineering Laboratory for Rural Water Environment and Resources, Hefei, 230009, PR China;3. Anhui Province Key Laboratory of Industrial Wastewater and Environmental Treatment, Hefei, 230024, PR China;4. School of Mechanical Engineering, Hefei University of Technology, Hefei, 230009, PR China;1. Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, PR China;2. School of Energy and Power Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, PR China;3. Department of Chemistry, University of the Western Cape, Robert Sobukwe Road, Cape Town, 7535, South Africa |
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| Abstract: | Photocatalytic hydrogen production from a digested sewage sludge solubilized in hot-compressed water (573K) was investigated in order to develop a low-cost sacrifice agent for CdS-based photocatalysts from biomass. H2 evolution occurred over a LaMnO3/CdS composite photocatalyst under Xe lamp irradiation from water containing the solubilized sewage sludge and the amount of evolved H2 reached more than -catalyst for a -reaction; on the other hand, no H2 was formed in the absence of the solubilized sewage sludge. The H2 evolution rate was comparable to that when typical Na2S–Na2SO3 sacrifice agents were used, suggesting the applicability of a biomass-derived sacrifice agent for photocatalysis. Organic compounds, such as methanol and formic acid, contained in the solubilized sewage sludge are responsible for the H2 evolution observed. |
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