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Toxic effects of shale gas fracturing flowback fluid on microbial communities in polluted soil
Mei, Xudong1; Zeng, Fanhai1; Xu, FengLin1; Su, HaiFeng2,3,4
2021-12-01
摘要A large amount of shale gas fracturing flowback fluid (FFBF) from the process of shale gas exploitation causes obvious ecological harm to health of soil and water. However, biological hazard of soil microbial populations by fracturing flowback fluid remains rarely reported. In this study, the microbiological compositions were assessed via analyzing diversity of microbial populations. The results showed significant differences between polluted soil by fracturing flowback fluid and unpolluted soil in different pH and temperature conditions. And then, the microbe-index of biological integrity (M-IBI) was used to evaluate the toxicity of the fracturing flowback fluid based on analysis of microbial integrity. The results showed that polluted soil lacks key microbial species known to be beneficial to soil health, including denitrifying bacteria and cellulose-decomposing bacteria, and 35 degrees C is a critical value for estimating poor and sub-healthy level of damage to microbial integrity by fracturing flowback fluid. Our results provide a valuable reference for the evaluation of soil damage by fracturing flowback fluid.
关键词Microbe-index of biological integrity Permeability Microorganism evaluation Soil microorganism Toxic factor
DOI10.1007/s10661-021-09544-7
发表期刊ENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN0167-6369
卷号193期号:12页码:17
通讯作者Su, HaiFeng(suhaifeng@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:000716447500003
语种英语