文献类型：期刊文献

英文题名：Performance and Mechanisms of Biochar-Assisted Vermicomposting in Accelerating Dehp Biodegradation in Farmland Soil

作者：Zhen, Zhen[1]; Luo, Shuwen[1]; Chen, Yijie[1]; Li, Gaoyang[1]; Li, Huijun[1]; Wei, Ting[1]; Huang, Fengcheng[1]; Ren, Lei[1]; Liang, Yan-Qiu[2]; Lin, Zhong[2,3]; Zhang, Dayi[4,5]

机构：[1] College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524088, China; [2] Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, 524088, China; [3] Shenzhen Research Institute of Guangdong Ocean University, Shenzhen, 518108, China; [4] College of New Energy and Environment, Jilin University, Changchun, 130021, China; [5] Key Laboratory of Groundwater Resources and Environment Ministry of Education, Jilin University, Changchun, 130021, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220346166)

语种：英文

外文关键词：Bacteria - Biodegradation - Organic acids - Organic pollutants

外文摘要：Either biochar or earthworms can accelerate di-(2-ethylhexyl) phthalate (DEHP) degradation in soils, by physically immobilizing organic pollutants or encouraging indigenous and intestinal degraders. However, very limited information is known about the biochar-assisted vermicomposting on soil DEHP degradation and the underlying mechanisms. This study investigated DEHP degradation performance and bacterial community change in soils with either earthworm, biochar or their combination. Both biochar and earthworms significantly improved DEHP degradation, and biochar exhibited a stronger impact on soil bacterial communities than earthworms. Burkholderiaceae, Pseudomonadaceae and Flavobacteriaceae were potential DEHP degraders and enriched in biochar-assisted vermicompsoting. Particularly, Burkholderiaceae and Sphingomonadaceae were enriched in earthworm guts and charosphere, possibly explaining the mechanisms of accelerated DEHP degradation in biochar-assisted vermicomposting. The increase of soil pH, SOM and humus (humic acid, fulvic acid and humin) also helped in encouraging DEHP degradation. These findings imply that earthworms coupled with biochar could enhance DEHP removal by improving soil physicochemical variables and microbial composition in soils, earthworm guts and charosphere. ? 2022, The Authors. All rights reserved.