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http://dx.doi.org/10.4491/KSEE.2011.33.9.670

Effect of Water-Thoroughly-Rinsing in the Artificially Metal-Contaminated Soil Preparation on Final Soil Metal Concentrations  

Hur, Jeong-Hyun (Department of Environmental Engineering, Kunsan National University)
Jeong, Seung-Woo (Department of Environmental Engineering, Kunsan National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.33, no.9, 2011 , pp. 670-676 More about this Journal
Abstract
Artificially metal-contaminated soils have been widely used for lab-scale soil washing and soil toxicity experiments. The artificial soil contamination methods consist of 1) first equilibrating soils with heavy metal solution, 2) filtrating or centrifuging soils from the mixture and 3) finally drying the soils. However, some of those artificially contaminated soil experiments have not clearly shown that the soils were thoroughly rinsed with water prior to conducting experiments. This study investigated the amount of heavy metal release from the artificially metal-contaminated soil by pre-water-rinsing. Three different artificially metal-contaminated soil preparation methods were first evaluated with Cd and Pb concentrations of soil. Then, this study investigated the effect of pre-water-rinsing on the Cd and Pb concentration of the artificially contaminated soil. Heavy metal concentrations of the soil produced by equilibrating and drying the metal solution-soil were significantly reduced by pre-water-rinsing. The results of the study implied that experimental results would be significantly distorted when the artificially heavy metal-contaminated soils were not thoroughly water-rinsed prior to conducting experiments. Therefore, the initial heavy metal concentration of the artificially contaminated soil should be determined after thoroughly rinsing the soil that was previously obtained through the adsorption and dry stages.
Keywords
Heavy Metal; Contaminated Soil; Cadmium; Lead; Washing, Column;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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