垃圾填埋场是一种廉价的城市固体废物(MSW)管理方式,对总碳预算和全球气候变化做出了广泛贡献。来自印度两个地理上不同的大都市的三个垃圾填埋场被用作模型系统,以创建微观世界并研究其生理化学。微生物学,和碳排放。微观实验表明,兼性厌氧细菌群落在开始时显示出优势,但随着缺氧和厌氧条件的发展,甲烷生成盛行,导致产甲烷菌的丰度明显转移,特别是甲烷的成员,甲烷,和甲烷(占总微生物种群的70-90%)。地球化学数据显示,即使在同一城市,垃圾填埋场的组成也存在广泛的异质性。在过去,垃圾填埋场的温室气体排放主要使用不同的模型进行估算,缺乏准确性。由于目前可用的信息有限,这项研究可以引起研究人员对深入表征微生物多样性和垃圾填埋场碳排放的兴趣。当前研究中提出的微观模型是一种可靠而直接的方法,可以准确估算垃圾填埋场释放的不同类型气体的量。也可以通过设置现场实验来推断从实际垃圾填埋场释放的不同气体。
UNASSIGNED:在线版本包含补充材料,可在10.1007/s12088-021-00995-7获得。
The landfill is an inexpensive way of municipal solid waste (MSW) management and contributes extensively to the total carbon budget and global climate change. Three landfills from two geographically distinct metro- cities of India were taken as model systems to create microcosms and
study their physiochemistry, microbiology, and carbon emission. The microcosm experiments revealed that facultative anaerobic bacterial community showing the dominance in the beginning but with the progression of anoxia and anaerobic conditions, methanogenesis prevailed, resulting in a clear shift towards the abundance of methanogens especially the members of Methanosarcina, Methanocorpusculum, and Methanoculleus (70-90% of the total microbial population). Geochemical data showed a wide range of heterogeneity in landfills\' composition located even in the same city. In past, greenhouse gas emission from landfills is mainly estimated using different models which lack accuracy. As limited information is available as of now, this
study can elicit researcher interest for in-depth characterization of microbial diversity and carbon emission from landfills. The microcosm model presented in the current
study is a robust and straightforward method of accurate estimation of amounts of different types of gases release from landfill. It can also be extrapolate for estimation of different gases release from actual landfill sites by setting the on-site experiments.
UNASSIGNED: The online version contains supplementary material available at 10.1007/s12088-021-00995-7.