Plant-scale hyperthermophilic composting of sewage sludge shifts bacterial community and promotes the removal of organic pollutants

被引：34

作者：

Chen, Xiao-Hong ^{[1
]}

Huang, Yu-Hong ^{[1
]}

Lu, Huixiong ^{[2
]}

Mo, Ce-Hui ^{[1
]}

Xiang, Lei ^{[1
]}

Feng, Nai-Xiang ^{[1
]}

Zhao, Hai-Ming ^{[1
]}

Li, Hui ^{[1
]}

Li, Yan-Wen ^{[1
]}

Cai, Quan-Ying ^{[1
]}

机构：

[1] Jinan Univ, Coll Life Sci & Technol, Guangdong Prov Res Ctr Environm Pollut Control &, Guangzhou 510632, Peoples R China

[2] South China Agr Univ, Coll Nat Resources & Environm, Guangzhou 510642, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2022年 / 347卷

基金：

中国国家自然科学基金;

关键词：

Organic pollutant; Industrial composting; Microbial community; Degradation and dissipation; Sewage sludge; POLYCYCLIC AROMATIC-HYDROCARBONS; HEAVY-METALS; BIODEGRADATION; CONTAMINANTS; MANURE; PAHS; FATE;

D O I：

10.1016/j.biortech.2022.126702

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The dissipation of toxic organic pollutants during plant-scale hyperthermophilic composting and the influence of microbial community remain unclear. The results of plant-scale hyperthermophilic composting of municipal sludge with green waste showed that the residual concentrations of polyaromatic hydrocarbons, phthalates, polybrominated diphenyl ethers were <5 mg/kg and decreased over time, with the removal percentages from 12.1% to 51.2% during seven days of composting. High-throughput sequencing reveals that hyperthermophilic composting significantly reduced the diversity (e.g., observed species, chao1 and Shannon index) of bacterial community, shifting their structure and functions. The relative abundances of dominant phyla Proteobacteria and Firmicutes declined significantly, while those of extremophilic and heat-resisting phyla DeinococcusThermus and Chloroflexi increased dramatically. Some genera capable of degrading organic pollutants presented stably in sludge composts. Moreover, hyperthermophilic composting enriched the bacterial functions related to degradation and metabolism of cellulose and xenobiotics pollutants, which promoted the dissipation of organic pollutants and humification.

引用

页数：11

共 45 条

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