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Methane Production Using Peel-type Fruit Wastes and Sewage Sludge in Batch Anaerobic Digestion Process  

Jeong, Tae-Young (Division of Environmental Engineering, Yonsei University)
Lee, Jong Hak (Division of Environmental Engineering, Yonsei University)
Chung, Hyung-Keun (Division of Environmental Engineering, Yonsei University)
Cha, Hyung Joon (Department of Chemical Engineering, Pohang University of Science and Technology)
Choi, Suk Soon (Department of Biological and Environmental Engineering, Semyung University)
Publication Information
Applied Chemistry for Engineering / v.20, no.5, 2009 , pp. 542-546 More about this Journal
Abstract
Methane production using the mixed organic wastes of peel-type fruit wastes from apple or orange and sewage sludge was investigated in the batch anaerobic degradation process. When apple or orange peels with sewage sludge were used as mixed substrates, higher methane production was achieved under the condition of 3 : 7 (fruit peel : sewage sludge) mixing ratio. However, above the 3 : 7 mixing ratio, the pH of mixture was decreased from 8.0 to 4.5~4.7 due to organic acid production from the fruit wastes. Subsequently, methane production was low. The results in this study could be effectively applied to the methane gas production system as a bioenergy in the mixed batch anaerobic digestion process using the peel-type fruit wastes and sewage sludge.
Keywords
methane production; peel-type fruit wastes; sewage sludge; mixing ratio; anaerobic digestion process;
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