Inderscience Publishers

A study on the distribution coefficient of iodide ions from aqueous solution on some strongly basic anion exchange resins

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The ion exchange resins Duolite A-116, Indion 830 Type-1 and Indion N-IP Type-2 in iodide form were equilibrated separately with labelled radioactive iodide ion solutions of different concentrations varying from 0.005 M to 0.020 M in the temperature range of 25.0°C to 40.0°C. The Kd values of iodide ions for Duolite A-116 and Indion N-IP Type-2 were higher than that for Indion 830 Type-1 under identical experimental conditions. The difference in the Kd values of iodide ions for the three resins was mainly because of the swelling pressure, which depends on their water-holding capacities.

Keywords: anion exchange resins, tracer isotopes, distribution coefficient, swelling pressure, temperature effect, concentration effect, 131I isotope, Duolite A-116, Indion N-IP, Indion 830, ion exchange resins, liquid radioactive waste, nuclear waste, nuclear energy, nuclear power

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