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고분자의 혐기적 생분해도에 영향을 미치는 하수 소화 슬러지의 인자들
신평균,김명희,김종민,김병홍 ( Pyong Kyun Shin,Myung Hee Kim,Jong Min Kim,Byung Hong Kim ) 한국화학공학회 1996 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.34 No.1
The characteristics of anaerobic digested sludge affecting the biodegradation of plastic materials under anaerobic condition were studied. The percent organic matter(total solid×volatile solid, VSS) of sludges obtained from Joongrang Municipal Wastewater Treatment Plant in Seoul had varied from 0.52% to 0.86% during the period of 7 months from May, 1994. The biodegradation activity of sludges for cellophane didn`t correspond to the VSS. Sludges of July and September showed lower activities than others. But biodegradation activity for poly-β-hydroxybutyrate/hydroxyvalerate copolymer(PHB/HV, 92/8, W/W) corresponded well to VSS value. The biodegradation rate for both cellophane and PHB/HV increased as the concentration of sludge inoculum increases along with the decrease of lag period. The optimal total organic solids in the test medium was determined as 0.10-0.20%(W/V).