Adsorption of iodine species with ion exchange resins in aqueous solutions
An investigation of iodine absorption on ion exchange resins in aqueous electrolyte solutions has been performed. For I/sup -/ and IO/sub 3//sup -/ ions, the distribution coefficients are inversely proportional to the electrolyte concentration in solutions, whereas the adsorption of HIO with ion exchange resins is independent of electrolyte concentration in solutions. The mechanism of HIO adsorption is believed to be surface matrix adsorption rather than the ion exchange process. The distribution coefficients for HIO measured at both 20 and 56/sup 0/ are nearly constant, whereas the coefficients for I/sup -/ and IO/sub 3//sup -/ ions are approximately a factor of 100 smaller at the higher temperature. The distribution coefficients for I/sup -/ ions in water are generally on the order of 10/sup 4/, which is approximately three to five times larger than that for IO/sup -//sub 3/ ions. The half-time of the exchange reaction for I/sup -/ ions with the strong acid resin in water at 20/sup 0/C is approx. 50 s, compared to approx. 90 s for IO/sub 3//sup -/ ions. Some experimental data obtained in an operating boiling water reactor have also been reported.
- Research Organization:
- General Electric Co., San Jose, CA
- OSTI ID:
- 5461437
- Journal Information:
- Nucl. Technol.; (United States), Vol. 47:3
- Country of Publication:
- United States
- Language:
- English
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