通过通风工程对加速稳定垃圾填埋场的微生物群体进行研究
Yan Shao1, Minghui Liu1, Xiaochun Ma2
1Institute of Resources and Environment, Beijing Academy of Science and Technology, No. 27, Xisanhuanbei Road, Haidian District, Beijing, 100095, China.
Environmental science and pollution research international
|August 5, 2023
概括
空气化工程重塑了垃圾填埋场的微生物群落,增加了像乳酸菌这样的有益细菌,并增强了甲氧化等功能. 这种微生物转移加速了城市固体废物 (MSWs) 的稳定.
科学领域:
- 环境微生物学环境微生物学
- 废物管理工程 废物管理工程
- 生物地质化学循环 生物地质化学循环
背景情况:
- 垃圾填埋场产生大量的温室气体和污染物.
- 有氧稳定是一种工程工艺,用于加速废物分解.
- 了解微生物反应对于优化垃圾填埋管理至关重要.
研究的目的:
- 研究在垃圾填埋场进行有氧稳定过程中的微生物社区转移.
- 为了将细菌分布与垃圾填埋场温度和稳定水平相关联.
- 阐明推动垃圾填埋场加速稳定性的微生物机制.
主要方法:
- 从两个具有不同温度 (65.5°C和41.7°C) 的通风井站点采样城市固体废物 (MSW).
- 对MSW的物理成分,化学特性和微生物种群的分析.
- 生物信息分析用于预测微生物的生态特征和功能丰度.
主要成果:
- 菲尔姆Firmicutes占主导地位的有氧垃圾填埋场微生物社区.
- 属的丰富性因温度而异 (维塞拉在高处,辛特罗法塞蒂克斯在低处).
- 细菌分布受氨-和水分含量的影响.
- 透气导致无氧水解/乙原微生物的减少,而乳酸菌的增加.
- 观察到甲氧化,硫化氧化和有氧化基因异性功能的丰富.
结论:
- 空气化工程显著改变了垃圾填埋场的微生物群落.
- 特定的微生物群体和代谢功能是由有氧条件促进的.
- 这些微生物变化提供了一个加速填埋场稳定和减少环境影响的机制.
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