کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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183484 | 459550 | 2015 | 7 صفحه PDF | دانلود رایگان |
In this study, we evaluated the effectiveness of the solar-powered electrokinetic process for the remediation of As-contaminated soil in order to reduce the electrical energy consumption on a pilot scale, and this study also investigated the influence of oxalic acid for the treatment of As bound to amorphous iron-oxide. The soil was collected from a former refinery plant located in Janghang, Chungnam, Republic of Korea. The experiments were designed two different power supply systems: a normal power supply and a solar-powered system, and operated the experiments for five weeks. The normal direct current (DC)-powered system removed 32% of the As, but the solar-powered system removed 27% of the As from the soil over the five weeks of electrokinetic operation. The energy expenditure of the solar-based system was just 50% of that of the DC-powered system. The results show that the solar-powered electrokinetic process can remove slightly smaller amounts of contaminants with much less electrical energy. Based on these results, the solar-based electrokinetic process could be applied in order to remediate As-contaminated soil. However, enhanced As removal should be achieved for actual application.
Journal: Electrochimica Acta - Volume 181, 1 November 2015, Pages 160–166