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Ultimate Anaerobic Biodegradability and Multiple Decay Rate Coefficients of Organic Wastes
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 Title & Authors
Ultimate Anaerobic Biodegradability and Multiple Decay Rate Coefficients of Organic Wastes
Kim, Sun-Woo; Kang, Ho; Jeong, Ji-Hyun;
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Anaerobic mesophilic batch test of several organic wastes were carried out by a graphical statistic analysis (GSA) to evaluate their ultimate biodegradability and two distinctive decay rates ( and ) with their corresponding degradable substrate fractions ( and ). Each 3 L batch reactor was operated for more than 100 days at the substrate to inoculum ratio (S/I) of 0.5 as an initial total volatile solids (TVS) mass basis. Their Ultimate biodegradabilities were obtained respectively as follow; 69% swine waste, 45% dairy cow manure, 66% slaughterhouse waste, 79% food waste, 87% food waste leachate, 68% primary sludge and 39% waste activated sludge. The readily biodegradable fraction of 89% () of Swine Waste BVS () degraded with in the initial 31 days with of , where as the rest 11% slowly biodegradable fraction () of BVS degraded for more than 100 days with the long term batch reaction rates () of . For the Food Waste and Waste Activated Sludge, their readily biodegradable portions () appeared 89% and 80%, which degrades with of and for an initial 15 days and 28 days, respectively. Their corresponding long term batch reaction rates () were and . Results from other organic wastes are addressed in this paper. The theoretical hydraulic retention times (HRTs) of anaerobic digesters treating organic wastes are easily determined by the analysis of multiple decay rate coefficients ( and ) and their corresponding biodegradable substrate fractions ( and ).
Organic Wastes;Ultimate Biodegradability;Batch Test;Multiple Decay Rate Coefficients;Biodegradable Volatile Solids;
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젖소분뇨로부터 최대 바이오가스 생산과 유기물 제거효율을 달성하기 위한 반건식 간헐주입 연속혼합 혐기성반응조의 최적 수리학적 체류시간 도출을 위한 연구,강호;김선우;정지현;안희권;정광화;

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