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김계남,오원진,원휘준,정충헌 한국원자력학회 2004 Nuclear Engineering and Technology Vol.36 No.4
The ageing effects of radionuclides in radioactive soil on remediation using the electrokineticmethod were analyzed. Comparative experiments were conducted for the reactive soil around aTRIGA research?reactor contaminated with 137Cs and 60Co for 15 years and the non-reactivesoil that was intentionally contaminated with Cs+ and Co2+ for 3 days. It was observed thatbecause of an aging effect on 137Cs, the efficiency of removing it decreased. H2SO4 used as anadditive to increase the removal efficiency showed a higher removal capability than otherchemicals for both 137Cs and 60Co. The efficiency of removing radionuclides from theradioactive soil in the column was proportional to the capability of the added chemical toextract radionuclides. It took 10 days to achieve a 54% removal of 137Cs and a 97% removal of60Co from the soil. The volume of the soil wastewater discharged from the soil column by theelectrokinetic method was 20% below that for soil washing.