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Effect of the Pretreatment by Thermal Hydrolysis on Biochemical Methane Potential of Piggery Sludge
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 Title & Authors
Effect of the Pretreatment by Thermal Hydrolysis on Biochemical Methane Potential of Piggery Sludge
Kim, Seung-Hwan; Kim, Ho; Kim, Chang-Hyun; Yoon, Young-Man;
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The objective of this study was to investigate the organic solubilization (SCOD) and improvement of methane production for pig slurry by thermal hydrolysis. A sludge cake was pretreated by thermal hydrolysis at different reaction temperatures (200, 220, 250, ). Ultimate methane potential (Bu) was determined at several substrate and inoculum (S/I) ratios (1:9, 3:7, 5:5, 7:3 in volume ratio) by biochemical methane potential (BMP) assay for 73 days. Pig slurry SCOD were obtained with 98.4~98.9% at the reaction temperature of . Theoretical methane potentials () of thermal hydrolysates at the reaction temperature of , , , were 0.631, 0.634, 0.705, , respectively. of thermal hydrolysate were decreased from to with the changes of S/I ratio from 1:9 to 7:3, and also of different thermal hydrolysates (, , ) showed same tendency to of thermal hydrolysate according to the changes of S/I ratio. Anaerobic biodegradability () of thermal hydrolysate at different S/I ratios was decreased from 32.2% for S/I ratio of 1:9 to 17.6% for S/I ratio of 7:3. of , , and thermal hydrolysat were decreased from 36.4% to 9.6%, from 31.3% to 0.8%, and from 26.6% to 0.8%, respectively, with the S/I ratio change, respectively. In this study, the rise of thermal reaction temperature caused the decrease of anaerobic digestibility and methane production while organic materials of pig slurry were more solubilized.
Biochemical methane potential;Thermal hydrolysis;Piggery sludge;Anaerobic digestion;Biogas;
 Cited by
기질과 접종액의 비율이 도계 가공장 슬러지 열가수분해액의 메탄생산퍼텐셜에 미치는 영향,오승용;윤영만;

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Effects of Substrate to Inoculum Ratio on Biochemical Methane Potential in Thermal Hydrolysate of Poultry Slaughterhouse Sludge, Korean Journal of Environmental Agriculture, 2016, 35, 2, 121  crossref(new windwow)
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