文献类型：期刊文献

英文题名：Enhancing pentachlorophenol degradation by vermicomposting associated bioremediation

作者：Lin, Zhong[1,2];Bai, Jing[1];Zhen, Zhen[2];Lao, Shiqi[1];Li, Wenyan[1];Wu, Zhihao[1];Li, Yongtao[1,3];Spiro, Baruch[4];Zhang, Dayi[5]

机构：[1]South China Agr Univ, Coll Nat Resources & Environm, 483 Wushan Rd, Guangzhou 510642, Guangdong, Peoples R China;[2]Guangdong Ocean Univ, Coll Agr, Zhanjiang 524088, Peoples R China;[3]Minist Agr, Inst Environm Protect, Tianjin 300191, Peoples R China;[4]Nat Hist Museum, Dept Mineral, Cromwell Rd, London SW7 5BD, England;[5]Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 2YW, England

年份：2016

卷号：87

起止页码：288

外文期刊名：ECOLOGICAL ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000368899800036)、、EI(收录号：20160301815815)、Scopus(收录号：2-s2.0-84954126357)、WOS

基金：The research was financially supported by National Natural Science Foundation of China (41171210 and 41301252), Special Fund for Agro-scientific Research in the Public Interest (201509032 and 201503107-X) and China Postdoctoral Science Foundation Funded Project (2014M560680).

语种：英文

外文关键词：Pentachlorophenol; Biodegradation; Earthworm; Compost; Microbial community

外文摘要：Vermicomposting is an effective and environmentally friendly approach for soil organic contamination clean-up. This study investigated the roles and mechanisms of earthworm (Eisenia foetida) on soil pentachlorophenol (PCP) degradation with sterile and non-sterile soil-compost treatment. Limited soil PCP degradation was observed in the control and sterile compost treatments, whereas the synergetic effects of earthworm and compost contributed to the PCP biodegradation acceleration by significantly improving microbial biomass and activities. Sequence analysis and phylogentic classification of soil bacterial and fungal community structure after 42 days treatment identified the dominancy of indigenous bacterial families Pseudomonadaceae, Sphingobacteriaceae and Xanthomonadaceae, and fungal family Trichocomaceae, which were responsible for PCP biodegradation and stimulated by vermicomposting. Further investigation revealed the dominant roles of sterile compost during PCP biodegradation as the formation of humus-PCP in soil rather than neutralizing soil pH and increasing PCP availability. The mechanisms of vermicomposting include humus-PCP complex degradation, humus consumption and soil pH neutralization. This study provides a comprehensive understanding of the synergetic effect of vermicomposting on microbial community functions and PCP degradation enhancement in soils. (C) 2015 Elsevier B.V. All rights reserved.