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HERO ID
6195560
Reference Type
Journal Article
Title
Microbial community structure and diversity in a municipal solid waste landfill
Author(s)
Wang, X; Cao, A; Zhao, G; Zhou, C; Xu, R
Year
2017
Is Peer Reviewed?
1
Journal
Waste Management
ISSN:
0956-053X
EISSN:
1879-2456
Volume
66
Page Numbers
79-87
Language
English
PMID
28442259
DOI
10.1016/j.wasman.2017.04.023
Web of Science Id
WOS:000404503900010
URL
http://www.sciencedirect.com/science/article/pii/S0956053X17302520
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Abstract
Municipal solid waste (MSW) landfills are the most prevalent waste disposal method and constitute one of the largest sources of anthropogenic methane emissions in the world. Microbial activities in disposed waste play a crucial role in greenhouse gas emissions; however, only a few studies have examined metagenomic microbial profiles in landfills. Here, the MiSeq high-throughput sequencing method was applied for the first time to examine microbial diversity of the cover soil and stored waste located at different depths (0-150cm) in a typical MSW landfill in Yangzhou City, East China. The abundance of microorganisms in the cover soil (0-30cm) was the lowest among all samples, whereas that in stored waste decreased from the top to the middle layer (30-90cm) and then increased from the middle to the bottom layer (90-150cm). In total, 14 phyla and 18 genera were found in the landfill. A microbial diversity analysis showed that Firmicutes, Proteobacteria, and Bacteroidetes were the dominant phyla, whereas Halanaerobium, Methylohalobius, Syntrophomonas, Fastidiosipila, and Spirochaeta were the dominant genera. Methylohalobius (methanotrophs) was more abundant in the cover layers of soil than in stored waste, whereas Syntrophomonas and Fastidiosipila, which affect methane production, were more abundant in the middle to bottom layers (90-150cm) in stored waste. A canonical correlation analysis showed that microbial diversity in the landfill was most strongly correlated with the conductivity, organic matter, and moisture content of the stored waste.
Keywords
Microbial; Diversity; Structure; Landfill; Municipal solid waste
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