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《Environmental Science & Technology》 2013-S1
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Relationship Between α-Amylase Activity and Biogas Rate During Anaerobic Digestion of Organic Fraction of Municipal Solid Waste

LI Jian-chang1,2,HE Juan2,YUAN Ya-ge1,SUN Ke-wei2,LIU Shi-qing1,ZHANG Wu-di1(1.College of Energy and Environmental Science,Yunnan Normal University,Kunming 650092,China;2.National Engineering Center of Solid Waste Resources Recovery,Kunming University of Science and Technology,Kunming 650093,China)  
Hydrolytic enzymes,which are very key enzymes in hydrolytic step of anaerobic digestion,have an important effect on substrate hydrolysis and biogas production.To research those effect,this paper have investigated the relationship between α-amylase activity and biogas rate with organic fraction of municipal solid waste(OFMSW) as substrate,at the mesophilic temperature and batch fermentation.The results showed that the change of α-amylase activity is often before that of biogas rate.It also showed that with the increase of enzyme activity,biogas rate increased.When enzyme activity was at its peak period,the biogas rate was very fast.After the peak period,enzyme activity dropped,and biogas rate reduced too.
【Fund】: 云南省自然科学基金(2009CD044);; 云南省科技条件平台建设项目(2010DH012);; 昆明理工大学固体废弃物资源化国家工程中心项目
【CateGory Index】: X705
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