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Effect of Organic Matter and Moisture Content on Reduction of Cr(VI) in Soils by Zerovalent Iron
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 Title & Authors
Effect of Organic Matter and Moisture Content on Reduction of Cr(VI) in Soils by Zerovalent Iron
Yang, Jae-E.; Lee, Su-Jae; Kim, Dong-Kuk; Oh, Sang-Eun; Yoon, Sung-Hwan; Ok, Yong-Sik;
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 Abstract
Current soil remediation principles for toxic metals have some limitations even though they vary with different technologies. An alternative technology that transforms hazardous substances into nonhazardous ones would be environmentally beneficial. Objective of this research was to assess optimum conditions for Cr(VI) reduction in soils as influenced by ZVI(Zero-Valent Iron), organic matter and moisture content. The reduction ratio of Cr(VI) was increased from 37 to 40% as organic matter content increased from 1.07 to 1.75%. In addition, Cr(VI) concentration was reduced as soil moisture content increased, but the direct effect of soil moisture content on Cr(VI) reduction was less than 5% of the Cr(VI) reduction ratio. However, combined treatment of ZVI(5%), organic matter(1.75%) and soil moisture(30%) effectively reduced the initial Cr(VI) to over 95% within 5 days and nearly 100% after 30 days by increasing oxidation of ZVI and concurrent reduction of Cr(VI) to Cr(III). The overall results demonstrated that ZVI was effective in remediating Cr(VI) contaminated soils, and the efficiency was synergistic with the combined treatments of soil moisture and organic matter.
 Keywords
Cr(VI) reduction;zerovalent iron;moisture;organic matter;remediation;
 Language
Korean
 Cited by
1.
안정화제 처리에 따른 중금속 오염 농경지 복원의 효율성 평가: 현장실증시험,오세진;김성철;윤현수;김하나;김태환;연규훈;이진수;홍성조;양재의;

한국토양비료학회지, 2011. vol.44. 6, pp.1052-1062 crossref(new window)
2.
우리나라 농경지 중금속 동태 및 작물흡수 연구동향,이지호;김지영;고우리;정은정;;정구복;김두호;김원일;

한국환경농학회지, 2012. vol.31. 1, pp.75-95 crossref(new window)
1.
Evaluating Heavy Metal Stabilization Efficiency of Chemical Amendment in Agricultural Field: Field Experiment, Korean Journal of Soil Science and Fertilizer, 2011, 44, 6, 1052  crossref(new windwow)
2.
Current research trends for heavy metals of agricultural soils and crop uptake in Korea, Korean Journal of Environmental Agriculture, 2012, 31, 1, 75  crossref(new windwow)
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