LIANG Zhi-rong, WU Yu-sheng, LIU Xue-jun. Pre-Treatment of Radioactive Spent Ion Exchange Resin by Fenton Process[J]. Journal of Nuclear and Radiochemistry, 2007, 29(2): 71-74.
    Citation: LIANG Zhi-rong, WU Yu-sheng, LIU Xue-jun. Pre-Treatment of Radioactive Spent Ion Exchange Resin by Fenton Process[J]. Journal of Nuclear and Radiochemistry, 2007, 29(2): 71-74.

    Pre-Treatment of Radioactive Spent Ion Exchange Resin by Fenton Process

    • Fenton reagent oxidation experiments were conducted to test its feasibility in pretreatment of radioactive spent ion exchange resin. The effects of reaction conditions such as the dosage of H2O2 and Fe2+, reaction time(t)and reaction temperature(θ)were studied in term of chemical oxygen demand (COD) removal efficiency. The optimum operating conditions determined by the orthogonal experiments are as follows: c0(H2O2)=4.0 mol/L, c0(Fe2+)=20 mmol/L, θ=95 ℃ and t=4 h at pH=2.5. Under optimum operating conditions, approximately 100% decomposition efficiencies can be achieved for three 50 g uraniumcontaining wet resin samples. The COD is reduced from 8.0-10.0 g/L in the initial solution to 0.2-0.3 g/L in the residual solution . At the same time, the concentration of uranium in the tail-gas absorption solution don’t remarkably increase. The study results show that the pre-treatment of industrially generated radioactive spent ion exchange resin by Fenton’s reagent can entail very effective degradation of the resin. 
    • loading

    Catalog

      Turn off MathJax
      Article Contents

      /

      DownLoad:  Full-Size Img  PowerPoint
      Return
      Return