Methane Generation and Capture of ***

作     者：Nickolas J.Themelis A.C.(Thanos)Bourtsalas 

作者机构：Earth Engineering CenterDepartment of Earth and Environmental EngineeringColumbia UniversityNew YorkNY 10027USA 

出 版 物：《Journal of Environmental Science and Engineering(A)》 (环境科学与工程（A）)

年 卷 期：2021年第10卷第6期

页      面：199-206页

学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学] 

基　　金：This study was sponsored by the Earth Engineering Center of Columbia University in the City of New York 

主　　题：Wastes LFG methane generation methane capture methane emissions carbon dioxide emissions greenhouse gas emissions U.S.A. 

摘      要：Analysis of the ***(Environmental Protection Agency)database of 2,549 MSW(Municipal Solid Waste)landfills showed that there were 1,164 operating landfills in which 348 million short tons(316 million metric tons)of waste were landfilled in *** total,these landfills occupy about 370 million square meters of land so it is not possible to monitor the generation of LFG(Landfill Gas)generation accurately,or collect most of the LFG *** study was based on the hypothesis that,on the average,methane generation is proportional to the tonnage of wastes landfilled *** Landfill Methane Outreach Program of the EPA(EPA-LMOP)compiles annual operating data of all methane-capturing *** analysis of the 2018 data for 396 LMOP operating landfills showed that 210 million short tons of wastes were deposited and 5.06 million short tons of methane were captured,i.e.,an average capture of 0.024-ton CH4/ton *** the basis of the anaerobic reaction of the DOC(Degradable Organic Carbon)in landfilled wastes,the average rate of methane generation from all operating *** was estimated to be 0.05 ton of CH4 per ton of annual capacity;this number corresponds to bioreaction of about one half of the total organic carbon in *** this basis,the average rate of CH4 emission from the 396 LMOP landfills was estimated to be 0.026-ton CH4 per annual ton of deposition and the average efficiency of LFG capture,48%.Adding up all 1,164 operating landfills,their total emission of methane was estimated at 11.9 million metric tons of *** CH4/CO2 equivalence of 25,this number corresponds to CO2-eq emissions of 270 million metric tons,i.e.,5.1%of the *** related carbon dioxide emissions.