Functional characteristics and influence factors of microbial community in sewage sludge composting with inorganic bulking agent

被引：187

作者：

Wang, Ke ^{[1
]}

Mao, Hailong ^{[1
]}

Li, Xiangkun ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Municipal & Environm Engn, 73 Huanghe Rd, Harbin 150090, Heilongjiang, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2018年 / 249卷

关键词：

Sludge; Composting; Metabolism function; Microbial community environmental factors; AMMONIA-OXIDIZING BACTERIA; SPHINGOBACTERIUM SP; SP NOV; DIVERSITY; DEGRADATION; FUNGI; ASSOCIATION; DYNAMICS; REMOVAL; PERFORMANCE;

D O I：

10.1016/j.biortech.2017.10.034

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The metabolic function of microbial community dominated organics and nutrients transformation in aerobic composting process. In this study, the metabolic characteristics of bacterial and fungal communities were evaluated in 60 days composting of sludge and pumice by using FUNGuild and PICRUSt, respectively. The results showed that microbial community structure and metabolic characteristics were distinctively different at four composting periods. Bacterial genes related to carbohydrate metabolisms decreased during the first 30 days, but bacterial sequences associated with oxidative phosphorylation and fatty acids synthesis were enhanced in curing phase. Most of fungal animal pathogen and plant pathogen disappeared after treatment, and the abundance of saprotroph fungi increased from 44.3% to 97.8%. Oxidation reduction potential (ORP) significantly increased from -28 to 175 mV through incubation. RDA analysis showed that ORP was a crucial factor on the succession of both bacterial and fungal communities in sludge composting system.

引用

页码：527 / 535

页数：9

共 51 条

[1] Microbially-enhanced composting of olive mill solid waste (wet husk): Bacterial and fungal community dynamics at industrial pilot and farm level [J].