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Feasibility Evaluation of Using Biochar-based Permeable Reactive Barrier for the Remediation of Mercury and Arsenic Composite Polluted Water Bodies

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  • Dilixiati·Abulizi

Abstract

This study employed a modified biochar material to construct a permeable reactive barrier (PRB) for the treatment of water bodies polluted with mercury and arsenic. The experimental results demonstrated that the addition of goethite-modified biochar significantly enhanced the remediation efficiency of As (III), achieving a maximum removal rate of 100%. Conversely, pure biochar exhibited high efficiency in the removal of Hg (II), with a maximum removal rate approaching 100%. Furthermore, the pH level of the water significantly influenced the adsorption efficiency of heavy metal ions, with the optimal removal performance observed at a pH value of 6.0. The PRB system demonstrated excellent removal rates under low concentrations of heavy metals. However, as the concentration increased, the remediation efficiency exhibited a slight decrease. In summary, the findings of this study provide compelling evidence for the use of modified biochar in the construction of PRBs for the remediation of mercury- and arsenic-polluted water bodies. Furthermore, the study reveals the mechanism by which pH and heavy metal concentration influence remediation efficiency.

Suggested Citation

  • Dilixiati·Abulizi, . "Feasibility Evaluation of Using Biochar-based Permeable Reactive Barrier for the Remediation of Mercury and Arsenic Composite Polluted Water Bodies," Asian Agricultural Research, USA-China Science and Culture Media Corporation, vol. 16(05).
    • Handle: RePEc:ags:asagre:349081
    DOI: 10.22004/ag.econ.349081
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