期刊
ELECTROCHIMICA ACTA
卷 181, 期 -, 页码 160-166出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.03.065
关键词
green remediation; solar cell; pulse; oxalic acid
资金
- Korea Environment Industry and Technology Institute (KEITI) through GAIA project
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. (C) 2015 Elsevier Ltd. All rights reserved.
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