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Evaluation of the response of dynamic changes in the natural attenuation of chloride-polluted groundwater via high-throughput sequencing: Degradation characteristics and environmental changes

  • Authors (legacy)
    Corresponding: Jianliang Xue
    Co-authors: Bo Wang
    Zhenning Liu
    Yongjun Huang
    Qing Jiang
    Dongdong Yan
    Conghai Xu
    Kunhua Wang
    Ke Shi
    Jianliang Xue
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  • gnest_05124_published.pdf
  • Paper ID
    gnest_05124
  • Paper status
    Published
  • Date paper accepted
  • Date paper online
Graphical abstract
Abstract

Due to its cost-effectiveness and absence of secondary pollution, the biological approach for eradicating chloride pollution has attracted widespread interest. However, numerous obstacles, including the limited presence of degrading microbes and a substantial impact from environmental variables arises during its practical application. The purpose of this study was to investigate the impact of ambient environmental factors during field surveys on the degradation of microorganism performance. The findings of this study demonstrate a negative correlation between the chlorinated hydrocarbons (CHCs) concentrations and pH, oxidation-reduction potential (ORP). These results suggest that redox conditions would improve the efficiency of chloride degradation. In addition, the degradation of CHCs was found to be primarily influenced by Dechloromonas, which accounted for > 1% of the total 16S rRNA sequences. In the absence of dechlorinating bacteria, the degradation efficiencies for CCl4, C2Cl4, and C2H2Cl4 were 91.7%, 87.8%, and 86.0% lower than the efficiency in the presence of these microorganism, respectively. Therefore, this study provides a comprehensive understanding of the role of biological degradation in controlling chloride pollution, along with substantial evidence supporting the extensive implementation of biological degradation technology.

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Jianliang, X. et al. (2024) “Evaluation of the response of dynamic changes in the natural attenuation of chloride-polluted groundwater via high-throughput sequencing: Degradation characteristics and environmental changes”, Global NEST Journal, 26(1). Available at: https://doi.org/10.30955/gnj.005124.