Insights on optimizing landfill site selection inspired by co-fermentation of weathered coal and landfill leachate

IF 4.1 2区环境科学与生态学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

International Biodeterioration & Biodegradation Pub Date : 2024-09-13 DOI:10.1016/j.ibiod.2024.105922

Hongyu Guo , Bo Song , Ze Deng , Linyong Chen , Hengxing Ren , Qiang Xu , Xiaokai Xu

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引用次数: 0

Abstract

To develop new methods for transforming waste resources such as landfill leachate and weathered coal into clean energy, this research analyzed the co-fermentation effect and internal mechanism of methane production through gas chromatography, three-dimensional fluorescence, inducive coupling and metagenomics techniques. Our findings revealed that landfill leachate addition drives more than 70% increase in weathered coal biomethane production. Anaerobic fermentation collectively increased the tryptophan content in liquid-phase biodegradation, with the highest proportion reaching up to 72%. Paracoccus, Ralstonia, Aquamicrobium and other major microorganisms were in the range of 9–32%. Contamination of heavy metal diversity resistance genes has impacted microflora composition, with specialized heavy metal resistance genes such as NreB, CopD, NreB, and MerP altering the influence of heavy metals on anaerobic fermentation. The combined anaerobic fermentation of landfill leachate and weathered coal has expanded clean waste utilization and has broad application prospects.

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受风化煤和垃圾填埋场渗滤液共同发酵的启发，优化垃圾填埋场选址的见解

为了开发将垃圾填埋场渗滤液和风化煤等废物资源转化为清洁能源的新方法，本研究通过气相色谱、三维荧光、诱导耦合和元基因组学技术分析了甲烷生产的协同发酵效应和内部机制。我们的研究结果表明，添加垃圾填埋场渗滤液可使风化煤生物甲烷产量增加 70% 以上。厌氧发酵共同提高了液相生物降解中色氨酸的含量，最高比例可达 72%。Paracoccus、Ralstonia、Aquamicrobium 和其他主要微生物的比例在 9-32% 之间。重金属多样性抗性基因的污染影响了微生物菌群的组成，NreB、CopD、NreB 和 MerP 等特化重金属抗性基因改变了重金属对厌氧发酵的影响。垃圾填埋场渗滤液和风化煤的联合厌氧发酵扩大了废物的清洁利用，具有广阔的应用前景。

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来源期刊

International Biodeterioration & Biodegradation 生物-环境科学

CiteScore

9.60

自引率

10.40%

发文量

107

审稿时长

21 days

期刊介绍： International Biodeterioration and Biodegradation publishes original research papers and reviews on the biological causes of deterioration or degradation.