Probstein R F, Hicks R E
Science. 1993 Apr 23;260(5107):498-503. doi: 10.1126/science.260.5107.498.
Application of a direct-current electric field in soils that contain contaminated liquid is expected to produce an important in situ means of environmental restoration. The electric field induces a motion of the liquid and dissolved ions that transports the contaminant to wells for removal. Electrode chemistry plays an important role, and reagents can be introduced at the electrodes to enhance contaminant removal rates. Experiments and modeling demonstrate high degrees of contaminant removal, propagation of sharp acid and base wave fronts from the electrodes, and a "focusing" effect by which metals accumulate in regions of the soil.
在含有受污染液体的土壤中施加直流电场有望成为一种重要的原位环境修复手段。电场会引发液体和溶解离子的运动，从而将污染物输送至井中以便清除。电极化学起着重要作用，并且可以在电极处引入试剂以提高污染物的去除率。实验和模型表明污染物去除程度很高，电极处会产生尖锐的酸和碱波前传播，以及金属在土壤区域中积累的“聚焦”效应。
