ZHANG Hui, ZHANG Li-peng, YU Xian-jin, DONG Yun-hui, WANG Xiang-ke. Sorption of Radionuclide 60Co(Ⅱ) on Illite[J]. Journal of Nuclear and Radiochemistry, 2011, 33(3): 167-172.
    Citation: ZHANG Hui, ZHANG Li-peng, YU Xian-jin, DONG Yun-hui, WANG Xiang-ke. Sorption of Radionuclide 60Co(Ⅱ) on Illite[J]. Journal of Nuclear and Radiochemistry, 2011, 33(3): 167-172.

    Sorption of Radionuclide 60Co(Ⅱ) on Illite

    • In this work, a naturally occurring illite was characterized by using FTIR and XRD technique to determine its surface functional groups and crystal structure. Sorption of 60Co(Ⅱ) on illite as a function of contact time, pH, ionic strength, foreign ions and humic substances was studied under ambient conditions using batch technique. The results indicate that the sorption of 60Co(Ⅱ) on illite is strongly dependent on pH values and ionic strength. A positive effect of humic substances on 60Co(Ⅱ) sorption is found at pH<8, whereas a negative effect is observed at pH>8. At low pH, the sorption of 60Co(Ⅱ) is dominated by outer-sphere surface complexation and/or ion exchange with Na+/H+ on illite surfaces, whereas inner-sphere surface complexation is the main sorption mechanism at high pH. From the experimental results, it is possible to conclude that illite has good potentialities for cost effective treatments of 60Co(Ⅱ) contaminated wastewater.
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