• Removal of As, Cadmium and Lead in Sandy Soil with Sonification-Electrokinetic Remediation
  • Oh, SeungJin;Oh, Minah;Lee, Jai-Young;
  • Dept. of Environmental Engineering, The University of Seoul;Dept. of Environmental Engineering, The University of Seoul;Dept. of Environmental Engineering, The University of Seoul;
  • 초음파동전기기법을 이용한 비소, 카드뮴, 납으로 오염된 사질토 정화 연구
  • 오승진;오민아;이재영;
  • 서울시립대학교 환경공학과;서울시립대학교 환경공학과;서울시립대학교 환경공학과;
Abstract
The actively soil pollution by the toxic heavy-metals like the arsenic, cadmium, lead due to the industrialization and economic activity. The uses the electrokinetic remediation of contaminated soil has many researches against the fine soil having a small size in the on going. However, it is the actual condition which the research result that is not effective due to the low surface charge of the particle and high permeability shows in the electrokinetic remediation in comparison with the fine soil in the case of the sandy soil in which the particle size is large. In this research, the electrokinetic remediation and ultrasonic wave fetch strategy is compound applied against the sandy soil polluted by the arsenic, cadmium, and lead removal efficiency of the sandy soil through the comparison with the existing electrokinetic remediation tries to be evaluated. First of all, desorption of contaminants in soil by ultrasonic extraction in the Pre-Test conducted to see desorption effective 5~15%. After that, By conducted Batch-Test results frequency output century 200 Khz, reaction time 30 min, contaminated soil used in experiment was 500 g. Removal efficiency of arsenic, cadmium, lead are 25.55%, 8.01%, 34.90%. But, As, Cd, Pb remediation efficiency less than 1% in EK1(control group).

Keywords: Sonification;Electrokinetic;Arsenic;Cadmium;Lead;

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This Article

  • 2013; 18(7): 1-11

    Published on Dec 30, 2013

  • 10.7857/JSGE.2013.18.7.001
  • Received on Oct 23, 2012
  • Revised on Oct 17, 2013
  • Accepted on Oct 30, 2013