Exploring landfill conditions: analyzing relationships among waste composition, leachate water quality, and microbial community structure in inert-waste landfill sites

IF 2.7 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Shusaku Hirakawa, Tomoko Koga, Nobuhiro Shimizu, Kazuhiro Fujikawa, Kazuhiro Tobiishi, Mineki Toba
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引用次数: 0

Abstract

To explore methods supplementing the insights gained from chemical analysis in understanding landfill conditions, we analyzed the relationship between landfill waste composition, microbial community structure in leachate, and leachate water quality. The principal component analysis of water quality and classification of landfills by waste composition showed that landfills with more plastic had lower total contamination than others. The types of organic and inorganic components in the leachate also varied with the landfill waste composition. The microbial community structure at the phylum level in leachate of inert-waste landfill sites was Proteobacteria emerged as the predominant phylum (55% on average) and Bacteroidetes followed as the second most prevalent (12% on average), while Firmicutes was less dominant (0.3% on average). Additionally, the amount of plastic in the landfill waste was related to cyanobacteria, known for their role in plastic degradation. Microbial taxa involved in organic metabolism and oxidation reactions were related to bicarbonate ion (HCO3), and those involved in oxygen-deficient environments and methane fermentation were connected to water quality parameters, such as COD, TOC, EC, inorganic ionic components, and Co. In the future, assessing the proportions of characteristic microbial taxa in leachate could help understand landfill conditions.

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来源期刊
CiteScore
5.30
自引率
16.10%
发文量
205
审稿时长
4.8 months
期刊介绍: The Journal of Material Cycles and Waste Management has a twofold focus: research in technical, political, and environmental problems of material cycles and waste management; and information that contributes to the development of an interdisciplinary science of material cycles and waste management. Its aim is to develop solutions and prescriptions for material cycles. The journal publishes original articles, reviews, and invited papers from a wide range of disciplines related to material cycles and waste management. The journal is published in cooperation with the Japan Society of Material Cycles and Waste Management (JSMCWM) and the Korea Society of Waste Management (KSWM).
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