Combination into a single electrochemical reactor of soil washing, ZVI dehalogenation and anodic oxidation can be used to degrade directly the clopyralid contained in spiked soil. Treatment is efficient, achieving the complete removal of chlorinated organics as well as the complete mineralization of the liquid waste produced. However, this combined process does not seem to improve the efficiency with respect to a system operated without addition of iron. Results show that the dechlorinated intermediates formed are less reactive than the parent pollutants, being particularly important the formation of oxalic acid, because its combination with iron (II) helps to explain the decrease in the overall rate of mineralization. This negative impact on the efficiency of the electrochemical process is not completely undesirable, because the toxicity of the waste decreases importantly in the very early stages with the use of iron, opening the possibility of a combination with biological treatments. Again, the accumulation of oxalate intermediates helps to explain this conclusion. Results point out the important effect of the size of iron particles used on the treatment and the complexity of the mechanisms that develop in the cell, which are explained in terms of the different parameters monitored.

可以将土壤清洗，ZVI脱卤和阳极氧化结合到单个电化学反应器中，以直接降解加标土壤中所含的吡虫啉。处理是有效的，可以完全除去氯化有机物，也可以完全矿化产生的废液。然而，相对于不添加铁而运行的系统，该组合工艺似乎并未提高效率。结果表明，形成的脱氯中间体比母体污染物的反应性差，这对草酸的形成尤为重要，因为草酸与铁（II）的结合有助于解释总矿化速率的降低。这种对电化学过程效率的负面影响并不是完全不希望的，因为在使用铁的早期阶段，废物的毒性就大大降低了，这开启了与生物处理相结合的可能性。同样，草酸盐中间体的积累有助于解释这一结论。结果指出了所用铁颗粒的尺寸对处理的重要影响以及细胞中形成机制的复杂性，这通过监测的不同参数来解释。