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Feasibility Test for Phytoremediation of Heavy Metals-Contaminated Soils using Various Stabilizers  

Jeon, Jongwon (안동대학교 응용화학과)
Bae, Bumhan (경원대학교 토목환경공학과)
Kim, Younghun (안동대학교 환경공학과)
Publication Information
Journal of the Korean GEO-environmental Society / v.13, no.3, 2012 , pp. 59-70 More about this Journal
Abstract
In this study, to select the best stabilizer for the heavy metals-contaminated soil from a smelter area during phytoremediation, a plant uptake experiment and a soil stabilization were simultaneously applied using Pteris multifida Poir. and five pre-screened stabilizers(zeolite, Mn dioxide, slag, Ca oxide, and magnetite). The extracted heavy metal was measured and compared using a 3 step sequential extraction for the soil samples. The growth rate of the plant was also evaluated. The stabilizers stabilized heavy metals in soil and reduced the extraction rate. Magnetite and calcium oxide showed better results than other stabilizers. The stabilizers enhanced the growth of the plant. All the heavy metals except for arsenic were concentrated in roots while arsenic was concentrated in leaves of the plant. It is concluded that the stabilizers can minimize the heavy metal release from the contaminated soil during phytoremediation and stimulated the growth of plant. These effects of stabilizers could compensate for some weak points of phytoremediation such as reaching of heavy metals by rainwater.
Keywords
Stabilization; Heavy metal; Customized enhanced-phytoremediation; Contaminated soil; Remediation;
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