Identifying Active Methanotrophs and Mitigation of CH4 Emissions in Landfill Cover Soil

摘要：

　　In the USA,municipal solid waste(MSW)landfills constitute one of the major anthropogenic sources of methane emissions.In the landfill cover soils employed at MSW landfills,aerobic methane-oxidizing bacteria(MOB)convert CH4 to CO2,thereby partially mitigating the CH4 emissions to the atmosphere.In this study,culture-dependent and culture-independent techniques were employed to evaluate methane oxidation capacity and to characterize the microbial community in landfill cover soil.Microcosms with synthetic landfill gas headspace were used to measure potential methane oxidation rates in landfill cover soil and in methanotrophs-enriched microbial consortia.The results demonstrate that the enriched landfill cover soil supported the growth of a diverse group of methanotrophic and methylotrophic microorganisms,and were dominated by Type I methanotrophs showing positive correlation with CH4 oxidation rates.

关键词： Methanotrophs CH4 oxidation activity Landfill cover soil Microbial community

作者: Raksha K.Rai Jyoti K.Chetri Stefan J.Green Krishna R.Reddy

作者单位: Department of Civil and Materials Engineering,University of Illinois at Chicago,842 West Taylor Stre Sequencing Core,Research Resources Center and Department of Biological Sciences,University of Illino

会议类型: 国际会议

会议名称: The 8th International Congress on Environmental Geotechnics(第八届国际环境土工大会)

会议地点: 杭州

会议语种:英文

页码: 308-316

在线出版日期: 2018-10-28（万方平台首次上网日期，不代表论文的发表时间）