Biological permeable reactive barriers coupled with electrokinetic soil flushing for the treatment of diesel-polluted clay soil.
Biological permeable reactive barriers coupled with electrokinetic soil flushing for the treatment of diesel-polluted clay soil.
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DOI：
10.1016/j.jhazmat.2014.08.069
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发表时间：
2015-02
影响因子：
13.6
通讯作者：
E. Mena;C. Ruiz;J. Villaseñor;M. Rodrigo;P. Cañizares
中科院分区：
文献类型：
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作者：
E. Mena;C. Ruiz;J. Villaseñor;M. Rodrigo;P. Cañizares
在实验室条件下，采用电动土壤冲洗（EKSF）和生物修复相结合的方法，在电极威尔斯井之间设置生物可渗透反应屏障（Bio-PRBs），研究了高岭土中柴油的去除。结果表明，该技术在去除污染物方面是有效的，并允许土壤在pH值、温度和养分方面保持适合微生物生长的条件。与此同时，EKSF被证明是一个非常有趣的技术，用于运输污染物，微生物和营养素，虽然结果表明，需要仔细管理，以避免耗尽营养素，这是有效地通过电迁移。运行两周后，30%的污染物被去除，能耗低于70 kWh m−3。主要通量（电渗透和蒸发）和变化的最相关的参数（营养素，柴油，微生物，表面活性剂，水分传导性和pH值）在治疗过程中，并在一个完整的研究后分析进行了研究，以提供一个全面的描述最相关的过程中发生的土壤（污染物的传输和生物降解）。
Removal of diesel from spiked kaolin has been studied in the laboratory using coupled electrokinetic soil flushing (EKSF) and bioremediation through an innovative biological permeable reactive barriers (Bio-PRBs) positioned between electrode wells. The results show that this technology is efficient in the removal of pollutants and allows the soil to maintain the appropriate conditions for microorganism growth in terms of pH, temperature, and nutrients. At the same time, EKSF was demonstrated to be a very interesting technology for transporting pollutants, microorganisms and nutrients, although results indicate that careful management is necessary to avoid the depletion of nutrients, which are effectively transported by electro-migration. After two weeks of operation, 30% of pollutants are removed and energy consumption is under 70 kWh m−3. Main fluxes (electroosmosis and evaporation) and changes in the most relevant parameters (nutrients, diesel, microorganisms, surfactants, moisture conductivity and pH) during treatment and in a complete post-study analysis are studied to give a comprehensive description of the most relevant processes occurring in the soil (pollutant transport and biodegradation).