title: Spatio-temporal variation of landfill gas in pilot-scale semi-aerobic and anaerobic landfills over 5years.
abstract: Variation of CH4, CO2, and O2concentrations in layers of different depths in semi-aerobic and anaerobic landfills was analyzed over a period of 5years. The results showed that most of the municipal solid waste became basically stable after 5years of landfill disposal. In the upper and middle layer, the concentration of CH4in the semi-aerobic landfill was significantly lower than that in the anaerobic landfill in different landfill periods, while in the lower layer, there was little difference in the CH4concentration between the semi-aerobic and anaerobic landfills. The average concentration of CH4and CO2in the anaerobic landfill was always higher than that in the semi-aerobic landfill, while the O2concentration showed an opposite variation in different landfill periods. This was related to the aerobic reaction of landfill waste around the perforated pipe in the semi-aerobic landfill, which inhibited effective landfill gas generation.
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Water Sciences, Beijing Normal University, Beijing 100875, China. Electronic address: Xiaohui201@yeah.net.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Wu
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. Electronic address: yuebo@craes.org.cn.
authors.forename: Bo
authors.initials: B
authors.lastname: Yue
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
authors.forename: Qifei
authors.initials: Q
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
authors.forename: Ye
authors.initials: Y
authors.lastname: Lin
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
authors.forename: Zhuoyi
authors.initials: Z
authors.lastname: Yan
mesh_terms: D000332:Aerobiosis; D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000706:statistics & numerical data*; D000693:Anaerobiosis; D004784:Environmental Monitoring; D008697:Methane / Q000032:analysis; D064091:Waste Disposal Facilities
chemical_list: D000393:Air Pollutants; D008697:Methane
keywords: Anaerobic landfill; Landfill gas; Municipal solid waste; Semi-aerobic landfill