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首页> 外文期刊>Journal of Hazardous Materials >Application of the electrokinetic-Fenton process for the remediation of kaolinite contaminated with phenanthrene
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Application of the electrokinetic-Fenton process for the remediation of kaolinite contaminated with phenanthrene

机译：电动Fenton工艺在菲污染高岭土修复中的应用。

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摘要

This study explored the feasibility of applying the electrokinetic-Fenton process (EK-Fenton process) for the remediation of contaminant sorbed onto soil possessing low-permeability. The relationship of H_2O_2 stability and phenanthrene treatment, and the variation in the monitoring values were also investigated during the EK-Fenton process when catalyzed by heterogeneous minerals. Phenanthrene was chosen to represent hydrophobic organic contaminants (HOCs), which are widespread in the environment, and kaolinite was used as the low-permeability soil. In these experiments, the H_2O_2 concentrations in pore water, the electrical potential distributions and the electrical currents were measured or monitored to assess the electrochemical effect in relation to injections of H_2O_2 from the anode. The results suggested that intermediate anions (HO_2~-, O_2~-) with Fenton-like reaction affected significantly the variations in the electrical current during the EK-Fenton process. The addition of 0.01 N H_2SO_4 to the anode reservoir improved the H_2O_2 stability and the treatment of phenanthrene in the entire soil specimen. Therefore, use of H_2O_2 and dilute acid, as an anode purging solution is a possible method for treating HOCs in low-permeability subsurface environments.
机译：这项研究探索了应用电动-芬顿法（EK-Fenton法）修复吸附在低渗透性土壤上的污染物的可行性。还研究了异质矿物催化的EK-Fenton过程中H_2O_2稳定性与菲处理的关系，以及监测值的变化。选择菲来代表在环境中广泛存在的疏水性有机污染物（HOC），高岭土被用作低渗透性土壤。在这些实验中，测量或监测孔隙水中H_2O_2的浓度，电势分布和电流，以评估与从阳极注入H_2O_2有关的电化学效应。结果表明，具有Fenton样反应的中间阴离子（HO_2〜-，O_2〜-）显着影响EK-Fenton过程中电流的变化。在阳极储层中添加0.01 N H_2SO_4可以改善整个土壤标本中H_2O_2的稳定性和菲的处理。因此，使用H_2O_2和稀酸作为阳极吹扫溶液是在低渗透率地下环境中处理HOC的一种可能方法。

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