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Influence of operational parameters on electro-Fenton degradation of organic pollutants from soil

机译：操作参数对芬顿降解土壤中有机污染物的影响

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摘要

The combination of the Fenton's reagent with electrochemistry (the electro-Fenton process) represents an efficient method for wastewater treatment. This study describes the use of this process to clean soil or clay contaminated by organic compounds. Model soil of kaolinite clay polluted with the dye Lissamine Green B (LGB) was used to evaluate the capability of the electro-Fenton process. The effects of operating parameters such as electrode material and dye concentration were investigated. Operating in an electrochemical cell under optimized conditions while using electrodes of graphite, a constant potential difference of 5 V, pH 3, 0.2 mM FeSO_4-7H_2O, and electrolyte 0.1 M Na_2SO_4, around 80% of the LGB dye on kaolinite clay was decolorized after 3 hours with an electric power consumption around 0.15 W h g~(-1). Furthermore, the efficiency of this process for the remediation of a real soil polluted with phenanthrene, a typical polycyclic aromatic hydrocarbon, has been demonstrated.
机译：Fenton试剂与电化学（电Fenton工艺）的结合代表了一种有效的废水处理方法。这项研究描述了使用该方法清洁被有机化合物污染的土壤或粘土。使用被染料Lissamine Green B（LGB）污染的高岭石粘土模型土壤来评估电子芬顿工艺的能力。研究了诸如电极材料和染料浓度等操作参数的影响。在使用石墨电极的最佳条件下于电化学电池中运行，在5 V，pH 3、0.2 mM FeSO_4-7H_2O和0.1 M Na_2SO_4电解质的恒定电势差下，高岭石粘土上约80％的LGB染料脱色。 3小时，耗电量约0.15 W hg〜（-1）。此外，已经证明了该方法对被典型的多环芳族烃菲污染的真实土壤的修复效率。

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