화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2008년 봄 (04/23 ~ 04/25, 제주ICC)
권호 14권 1호, p.592
발표분야 에너지/환경
제목 Soil washing of highly arsenic contaminated mine tailings with various extractants
초록 There are many abandoned mines, which have toxic contaminants, in Korea. Especially arsenic is a extreme toxic contaminant to environments and human and has used as a poison. The tested soil, Songchen mine tailing in Gangneung, contaminated arsenic with high concentration over 1,300 mg/kg soils. To remove arsenic, hydrochloric acid, sulfuric acid, phosphoric acid, and sodium hydroxide were used. With HCl, H2SO4, and H3PO4, the removal efficiencies of As were similar. In addition to As removal, Zn, Pb, Fe, Ca, and Mg were also extracted within those extractants. In case of NaOH, As was extracted solely. This results show that sequential extraction can be applied. Firstly, As is extracted with NaOH solution and then the remained metals like Zn and Pb are subsequentially extracted with other acids.
저자 양중석1, 이주영1, 백기태2, 최재영1
소속 1한국과학기술(연), 2금오공과대
키워드 hydrochlori acid; phosphoric acid; surfuric acid
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