Removal of 2,4,6-Trichlorophenol from Spiked Clay Soils by Electrokinetic Soil Flushing Assisted with Granular Activated Carbon Permeable Reactive Barrier

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• 作者：Clara Ruiz ; Esperanza Mena ; Pablo Ca?izares ; José Villase?or ; Manuel A. Rodrigo
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：January 15, 2014
• 年：2014
• 卷：53
• 期：2
• 页码：840-846
• 全文大小：333K
• ISSN：1520-5045

文摘

A study was performed on the removal of 2,4,6-trichlorophenol (TCP) from synthetic polluted soils using electrokinetic soil flushing (EKSF) assisted by a granular activated carbon-permeable reactive barrier (GAC-PRB). The polluted soils consist of spiked kaolin and were obtained by directly mixing kaolin with a 200 mg dm^鈥? TCP solution. Remediation tests were conducted at the bench-scale. The obtained results demonstrated that EKSF assisted with GAC-PRB is a very efficient technology for the removal of TCP from soils. For a given remediation period, the applied electric field is a very important parameter that influences the removal efficiency. Under optimized conditions, the one week-long remediation test obtained removals greater than 80% with energy consumptions below 200 kWh m^鈥?. The effects of the electric field on the temperature and TCP profiles were also assessed and explained in terms of ohmic drops and electrokinetic processes.