Department of Chemical Engineering, University of Castilla-La Mancha, Ciudad Real, Spain.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2011;46(13):1549-57. doi: 10.1080/10934529.2011.609458.
In recent years, electrokinetic techniques on a laboratory scale have been studied but few applications have been assessed at full-scale. In this work, a mock-up plant with two rows of three electrodes positioned in semipermeable electrolyte wells has been used to study the electro-osmotic flux distribution. Water accumulated in the cathodic wells when an electric voltage gradient was applied between the two electrode-well rows. Likewise, slight differences in the water flux were observed depending on the position and number of electrodes used and on the voltage gradient applied. Results show that the electro-osmotic flow did not increase proportionally with the number of electrodes used. During the start-up of the study, there was an abrupt change in the current density, pH and conductivity of the soil portions closest to electrodic wells due to electrokinetic processes. These differences can be explained in terms of the complex current distributions from anode and cathode rows.
近年来，已经对实验室规模的电动技术进行了研究，但很少有应用在全规模上进行评估。在这项工作中，使用了一个带有两排三个电极的模型工厂，这些电极位于半渗透电解质井中，以研究电动渗透通量分布。当在两个电极井列之间施加电压梯度时，水会在阴极井中积累。同样，根据使用的电极数量和施加的电压梯度，水通量也会有细微的差异。结果表明，电动渗透流不会与使用的电极数量成比例增加。在研究开始时，由于电动过程，最接近电极井的土壤部分的电流密度、pH 值和电导率会发生突然变化。这些差异可以根据阳极和阴极列的复杂电流分布来解释。
