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Health Risk Assessment during In Situ Remediation of Cr(VI)-Contaminated Groundwater by Permeable Reactive Barriers: A Field-Scale Study

Author

Listed:
  • Wenjing Zhang

    (Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China
    College of New Energy and Environment, Jilin University, Changchun 130021, China)

  • Yifan Zhu

    (Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China
    College of New Energy and Environment, Jilin University, Changchun 130021, China)

  • Ruiting Gu

    (School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China)

  • Zhentian Liang

    (Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China
    College of New Energy and Environment, Jilin University, Changchun 130021, China)

  • Wenyan Xu

    (Chemical Geological Prospecting Institute of Liaoning Province Co., Ltd., Jinzhou 121007, China)

  • Muhammad Yousuf Jat Baloch

    (Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China
    College of New Energy and Environment, Jilin University, Changchun 130021, China)

Abstract

The presence of residual Cr(VI) in soils causes groundwater contamination in aquifers, affecting the health of exposed populations. Initially, permeable reactive barriers(PRB) effectively removed Cr(VI) from groundwater. However, as PRB clogging increased and Cr(VI) was released from upstream soils, the contamination plume continued to spread downstream. By 2020, the level of contamination in the downstream was nearly identical to that in the upstream. The study results show that during normal operation, the PRB can successfully remove Cr(VI) from contaminated groundwater and reduce the carcinogenic and non-carcinogenic risks to humans from the downstream side of groundwater. However, the remediated groundwater still poses an unacceptable risk to human health. The sensitivity analysis revealed that the concentration of the pollutant was the most sensitive parameter and interacted significantly with other factors. Ultimately, it was determined that the residual Cr(VI) in the soil of the study region continues to contaminate the groundwater and constitutes a serious health danger to residents in the vicinity. As remediated groundwater still poses a severe threat to human health, PRB may not be as effective as people believe.

Suggested Citation

  • Wenjing Zhang & Yifan Zhu & Ruiting Gu & Zhentian Liang & Wenyan Xu & Muhammad Yousuf Jat Baloch, 2022. "Health Risk Assessment during In Situ Remediation of Cr(VI)-Contaminated Groundwater by Permeable Reactive Barriers: A Field-Scale Study," IJERPH, MDPI, vol. 19(20), pages 1-15, October.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:20:p:13079-:d:939478
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    Citations

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    Cited by:

    1. Muhammad Yousuf Jat Baloch & Wenjing Zhang & Baig Abdullah Al Shoumik & Anam Nigar & Adil A. M. Elhassan & Ali. E. A. Elshekh & Maaz Osman Bashir & Ahmed Fathi Mohamed Salih Ebrahim & Khalaf alla Adam, 2022. "Hydrogeochemical Mechanism Associated with Land Use Land Cover Indices Using Geospatial, Remote Sensing Techniques, and Health Risks Model," Sustainability, MDPI, vol. 14(24), pages 1-20, December.
    2. Muhammad Yousuf Jat Baloch & Wenjing Zhang & Dayi Zhang & Baig Abdullah Al Shoumik & Javed Iqbal & Shuxin Li & Juanfen Chai & Muhammad Ansar Farooq & Anand Parkash, 2022. "Evolution Mechanism of Arsenic Enrichment in Groundwater and Associated Health Risks in Southern Punjab, Pakistan," IJERPH, MDPI, vol. 19(20), pages 1-18, October.

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