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http://dx.doi.org/10.9727/jmsk.2014.27.4.311

Concentrating Effect of Heavy Metals from Heavy Metal Contaminated Soil by Magnetic Separation  

Kim, Jee-Eun (Department of Environmental Engineering, Andong National University)
Kim, Jeong-Jin (Department of Earth and Environmental Sciences, Andong National University)
Kim, Young-Hun (Department of Environmental Engineering, Andong National University)
Publication Information
Journal of the Mineralogical Society of Korea / v.27, no.4, 2014 , pp. 311-320 More about this Journal
Abstract
A magnetic separation study was conducted for a soil sampled from a landfill site where steel slag had been dumped for a long time. Heavy metal concentrating effect was evaluated by analyzing heavy metal content of magnetically separated soil and passed through soil. The effect was compared between soil after soil-washing process and original landfill soil and the effect was also tested between wet condition-magnetic separation and dry condition-magnetic separation. Separated ratio was relatively higher in non-soil washed sample. The water content has no significant effect on the separation rate. The concentrating effect of Fe, Pb, Cu, and Cd were 3.2, 2.1, 12.1, 2.5, 1.5 and 17.4, 7.0, 15.7, 9.6, 7.0 respectively for non-soil washed sample and soil washed sample. We can expect a bigger volume reduction effect from soil-washed samples. The volume reduction effect was obtained from the separation in dry condition. However, when the separation ratio is too high the volume reduction effect decreases. The magnetic separation leads to a volume reduction and concentration of heavy metals into a portion of soil in case of paramagnetic particles contained soil.
Keywords
heavy metal; magnetic separation; soil; slag; concentrating;
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Times Cited By KSCI : 1  (Citation Analysis)
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