堆肥
硫化氢
硫黄
微生物
硫化物
废物管理
化学
环境化学
硫酸盐还原菌
机械生物处理
环境科学
填埋气
硫酸盐
废物处理
城市固体废物
细菌
生物
工程类
有机化学
废物收集
遗传学
作者
Houyu Li,Xiaojing Li,Dandan Zhang,Yan Xu
标识
DOI:10.1016/j.biortech.2023.129334
摘要
The effect of microbial agents (MA) on hydrogen sulfide (H2S) emissions in the compost is still a controversial issue. This study examined the effects and microbial mechanisms of MA on H2S emissions during the composting of kitchen waste. The results showed that MA addition can promote sulfur conversion to elevate H2S emissions by approximately 1.6 ∼ 2.8 times. Structural equations demonstrated that microbial community structure was the dominant driver on H2S emissions. Agents reshaped the compost microbiome, showing more microorganisms participated in sulfur conversion, and enhanced the connection between microorganisms and functional genes. The relative abundance of keystone species associated with H2S emissions increased after adding MA. Particularly, the sulfite and sulfate reduction processes were intensified, as evidenced by an increasing in the abundance and pathways cooperation of sat and asrA after MA addition. The outcome provides deeper insights into MA on regulating the mitigation of H2S emissions in compost.
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