Figure 9 ,Table 2
    • 图  1  Fe3+浸渍膨润土对砷酸物种的吸附机理[21]

      Figure 1.  Adsorption mechanism of As(Ⅴ) onto the montmorillonite layer of Fe(Ⅲ)-impregnated bentonite[21]

    • 图  2  金属物种支撑的生物碳表面改性[31]

      Figure 2.  Biochar surface modification by impregnating metals and providing metal element support[31]

    • 图  3  改性生物碳固定砷的潜在机制[32]

      Figure 3.  Graphical representation of potential mechanisms for the immobilization of As on modified biochar surface[32]

    • 图  4  磁铁矿表面吸附(缺氧)和干燥(氧化)过程中的氧化还原反应示意图[80]

      Figure 4.  Schematic of proposed redox reactions on magnetite surface during adsorption (anoxic) and drying (oxic) processes[80]

    • 图  5  柱实验装置简图

      Figure 5.  Schematic diagram of column experimental equipment

    • 图  6  (a)地下水中的砷浓度等值线;(b)试验区试点PRB和监测井的位置;(c)PRB周围和内部的监测井地图[91]

      Figure 6.  (a) arsenic concentrations in groundwater; (b) locations of pilot-PRB and monitoring wells in the test area; (c) maps of monitoring wells around and inside the PRB[91]

    • 图  7  试点1、试点2和PRB的位置[92]

      Figure 7.  Location of Pilot 1, Pilot 2 and full-scale PRB[92]

    • 图  8  PRB横截面中的岩芯样品位置[93]

      Figure 8.  Core sample location in PRB cross section[93]

    • 图  9  PRB位置图[94]

      Figure 9.  PRB position map[94]