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http://dx.doi.org/10.9720/kseg.2012.3.253

Assessment of Biochemical Efficiency for the Reduction of Heavy Metal and Oil Contaminants in Contaminated Soils  

Kim, Man-Il (Dam and Watershed Department, Korea Water Resources Corporation)
Jeong, Gyo-Cheol (Dept. of Earth and Environmental Sciences, Andong National University)
Kim, Eul-Young (Office of Environmental Geology, Korea Rural Community & Agricultural Corporation)
Publication Information
The Journal of Engineering Geology / v.22, no.3, 2012 , pp. 253-262 More about this Journal
Abstract
With the aim of remediating soils contaminated by heavy metals and oil, experimental research was conducted to evaluate the optimal design factors for remediation in terms of efficient soil washing methods and processes. The experiments employed absorptiometric analysis and gas chromatography methods to reduce the concentration of heavy metals such as cooper (Cu), lead (Pb), and zinc (Zn), and total petroleum hydrocarbons (TPH) in contaminated soils. The experimental processes consisted of deciding on the washing solution, washing time, and dilution ratio for contaminated soils. A dissolution analysis of heavy metals was then performed by the addition of surfactant, based on the results of the decision experiments, and the injection processes of microbes and hydrogen peroxide were selected. The experimental results revealed that reduction effects in contaminated soils under the experimental conditions were most efficient with hydrochloric acid 0.1 mole, washing time 1 hour, and dilution ratio 1:3, individually. Additional reduction effects for heavy metals and TPH were found with the addition of a washing solution of 1% of surfactant. The addition of microbes and hydrogen peroxide caused a reduction in TPH concentration.
Keywords
contaminated soil; concentration reduction; washing solution; washing time; dilution ratio;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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