Utilization of excess corn kernels for hydrogen gas biofuel production |
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| Affiliation: | 1. Department of Biological Systems Engineering, Industrial Agricultural Products Center, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA;2. Department of Food Science, University of Arkansas, Fayetteville, AR 72704, USA;3. Department of Chemistry, University of Nebraska-Lincoln Lincoln, NE 68588, USA;1. Department of Animal and Dairy Sciences, University of Wisconsin, Madison 53706;2. Department of Animal Sciences, University of Florida, Gainesville 32608;1. School of Mechanical Engineering, Jiangxi University of Technology, Nanchang 330098, China;2. Nanchang Key Laboratory of Material and Structure Detection, Jiangxi University of Technology, Nanchang 330098, China;1. Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, PR China;2. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, China;1. Functional Omics and Bioprocess Development Laboratory, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia;2. Bioresources and Bioprocessing Research Group, Institute of Biological Sciences, Faculty of Sciences, University of Malaya, 50603, Kuala Lumpur, Malaysia;3. Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan;4. College of Engineering, Tunghai University, Taichung, Taiwan;5. Environmental Science and Management Program, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia;6. Centre of Advanced Materials, Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia;7. Nanotechnology & Catalysis Research Centre, University of Malaya, Kuala Lumpur, 50603, Malaysia;8. Department of Chemistry, University of Malaya, Kuala Lumpur, 50603, Malaysia;1. School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China;2. Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, China;3. Institute of Engineering Thermophysics, Chongqing University, Chongqing, 400030, China |
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| Abstract: | Corn kernels are good candidates for production of various value-added products such as gas biofuel, hydrogen due to the carbohydrate-rich composition. In this study, widely grown corn, field corn kernels were dissolved in subcritical water at different temperatures to determine optimal thermal hydrolysis condition. Organic-rich hydrolysate obtained from hydrolysis process was gasified by aqueous-phase reforming (APR) for hydrogen gas production.Since hydrolysis at 200 °C resulted in significantly more total organic carbon release than other temperatures and the lowest amount of insolubilized solid residue. Different concentrations of this hydrolysate (diluted with water at different ratios) were evaluated for high yielding hydrogen gas production. Gasification performance of corn kernels was also compared with lignocellulosic biomass using corn stover as a representative biomass material.The hydrolysate with 2486 mg/L TOC concentration showed the best performance for hydrogen gas production (130 mL H2/g corn) and left less amount of ungasified solid residue. Corn kernels produced 2.3 times more hydrogen gas compared to corn stover biomass. Thus, corn kernels are promising feed materials for APR process, and excess production of corn can be utilized for hydrogen gas production in higher yield and richer composition. |
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| Keywords: | Corn kernel Field corn Hydrolysis Gasification APR Hydrogen |
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