Department of Chemical Engineering, University of Vigo, E-36310 Vigo, Spain.
J Hazard Mater. 2010 May 15;177(1-3):1-11. doi: 10.1016/j.jhazmat.2009.11.055. Epub 2009 Nov 13.
During the last years, the anthropogenic sources have contributed to organic compound penetration into the environment. One large group of persistent and toxic contaminants is the hydrophobic organic contaminants. Among them, polycyclic aromatic hydrocarbons (PAHs) have been recognized as a representative group of these pollutants with low solubility. In this paper, it is showed the electroremediation of soil contaminated with PAHs as an alternative, to organic compound removal. This technique, mainly used for heavy metal extraction, applies the electric current to promote the movement of contaminants. Nowadays the application of this technique alone or combined with other techniques as for example Fenton or bioremediation is taking fine results to PAHs removal. Although the PAHs soil decontamination by means of the electric field is in an initial stage, many researchers have demonstrated the treatment effectiveness. This paper describes the foremost principles to carry out the electroremediation of soils contaminated with PAHs, just like the different alternatives to improve the electroremediation of PAHs and also the new methodologies of PAHs removal by using hybrid technologies.
在过去的几年中，人为来源促使有机化合物渗透到环境中。一大类持久性和有毒污染物是疏水性有机污染物。其中，多环芳烃 (PAHs) 已被公认为具有低溶解度的此类污染物的代表性物质。在本文中，展示了电修复作为去除有机化合物的替代方法，用于修复受 PAHs 污染的土壤。该技术主要用于重金属提取，利用电流促进污染物的运动。如今，该技术单独应用或与其他技术（例如芬顿或生物修复）结合应用，对于去除 PAHs 已取得良好的效果。尽管用电场进行 PAHs 土壤修复仍处于初始阶段，但许多研究人员已经证明了该处理的有效性。本文介绍了进行受 PAHs 污染土壤的电修复的最基本原理，以及改善电修复 PAHs 的不同方法，以及通过使用混合技术去除 PAHs 的新方法。
