%0 Journal Article
%T Effect of bio-column composed of aged refuse on methane abatement - A novel configuration of biological oxiation in refuse landfill<br>Effect of bio-column composed of aged refuse on methane abatement – A novel configuration of biological oxidation in refuse landfill
%A Dan Han
%A Youcai Zhao
%A Binjie Xue
%A Xiaoli Chai
%A <br>Dan Han
%A Youcai Zhao
%A Binjie Xue
%A Xiaoli Chai
%J 环境科学学报(英文版)
%D 2010
%I 
%X An experimental bio-column composed of aged refuse was installed around the exhaust pipe as a new way to mitigate methane in refuse landfill. One of the objectives of this work was to assess the e ect of aged refuse thickness in bio-column on reducing CH4 emissions. Over the study period, methane oxidation was observed at various thicknesses, 5 cm (small size), 10 cm (middle size) and 15 cm (large size), representing one to three times of pipeline diameters. The middle and large size both showed over 90% methane conversion, and the highest methane conversion rate of above 95% occurred in the middle-size column cell. Michaelis-Menten equation addressed the methanotrophs di usion in di erent layers of the bio-columns. Maximum methanotrophic activity (Vmax) measured at the three thicknesses ranged from 6.4 10??3 to 15.6 10??3 units, and the half-saturation value (KM) ranged from 0.85% to 1.67%. Both the highest Vmax and KM were observed at the middle-size of the bio-column, as well as the largest methanotrophs population, suggesting a significant e ciency of methane mitigation happened in the optimum zone with greatest a nity and methanotrophic bacteria activities. Therefore, bio-column is a potential style for methane abatement in landfill, and the aged refuse both naturally formed and artificially placed in the column plays a critical role in CH4 emission.
%K methane
%K landfill
%K aged refuse
%K bio-column
%K thickness<br>甲烷氧化菌
%K 垃圾填埋场
%K 生物氧化
%K 矿化垃圾
%K 组成
%K 配置
%K 甲烷氧化活性
%K 测量范围
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=949D27EBD30216D3005793B12EF0DA97&yid=140ECF96957D60B2&vid=BC12EA701C895178&iid=94C357A881DFC066&sid=CA122BD5B2FF2137&eid=FE17D37BFC90FA6B&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=45