Conversion of I2 into ionic species on composite materials in the NPP primary coolant

Abstract

The conversion of I2 into its ionic species in aqueous solutions, including the simulated primary coolant, at 20, 40, and 60°C on the solid phase of composite materials prepared by modification of KU-2 cation exchanger containing d elements was studied. These materials are capable of converting I2 into its ionic species to 99% both in distilled water and in a solution corresponding in its composition to the aqueous primary coolant of NPP with WWER-type reactors. Practically complete conversion of I2 (to more than 95.0%) is attained in 15 min. AV-18 anion exchanger is capable of sorbing I2 in the form of I 3 − from aqueous solution with the distribution coefficients K d >103 ml g−1 upon 24-h contact of the solid and liquid phases at V/m = 100.