Effects of Temperature and Hydraulic Retention Time on Anaerobic Digestion of Food Waste(BREWING AND FOOD TECHNOLOGY)
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概要
- 論文の詳細を見る
A modified three-stage methane fermentation system was developed to digest food waste efficiently. This system consisted of three stages: semianaerobic hydrolysis, anaerobic acidogenesis and strictly anaerobic methanogenesis. In this study, we examined the effects of temperature and hydraulic retention time (HRT) on the methanogenesis. Operation temperature was adjusted from 30℃ to 55℃, and the HRTs ranged from 8 to 12 d. The rate of soluble chemical oxygen demand (sCOD) removal correlated with digestion time according to the first-order kinetic model developed by Grau et al. [Water Res., 9, 637-642 (1975)]. With liquor food waste, thermophilic digesters showed a higher rate of sCOD removal than mesophilic digesters. The rates of biogas and methane production by thermophilic digesters were higher than those by mesophilic digesters regardless of HRT. Although maximum biogas production occurred when an HRT of 10 d was used, the methane yield was the highest in the reactor when an HRT of 12 d was used (223l CH_4/kg sCOD_<degraded>). However, digestion stability decreased when an HRT of 8 d was used. The concentration of NH_3-N generated in this experiment did not inhibit anaerobic digestion.
- 社団法人日本生物工学会の論文
- 2006-10-25
著者
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KIM Jung
Department of Occupational Medicine, College of Medicine, Dong-A University
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Kim Jung
Department Of Applied Chemistry School Of Engineering The University Of Tokyo
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Kim Si
Department Of Diagnostic Radiology Yonsei University College Of Medicine
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CHUN Young
Department of Information and Communication, Wonkwang Health Science College
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Chun Young
Department Of Environmental Engineering Bk21 Team For Biohydrogen Production Chosun University
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Kim Si
Department Of Environmental Engineering Bk21 Team For Biohydrogen Production Chosun University
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Oh Baek
Department of Environmental Engineering, BK21 Team for Biohydrogen Production, Chosun University
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Oh Baek
Department Of Environmental Engineering Bk21 Team For Biohydrogen Production Chosun University
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Kim Jung
Department Of Bio Materials Engineering Chosun University
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Kim Si
Department Of Bioscience And Biotechnology Institute Of Bioscience Sejong University
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Kim Jung
Department Of Applied Bioscience Cha University
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Kim Si
Department of Anesthesiology and Pain Medicine, College of Medicine, Kyungpook National University Hospital
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Chun Young
Department of Civil and Environmental Engineering, Myongji University, Yongin, Gyeonggi 449-728, Republic of Korea
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