NEW COMPOSITE MATERIALS FOR DECREASING OF RADIOACTIVE MOLECULAR IODINE IN THE WATER COOLANT ON THE WORKING AND NEW DEVELOPED NPPS

摘要

The sorption of(131)~ r, (131)~IO_3~-, h and CH_3(131)~I from water solutions at 25°C on new composite materials obtained by modifying of cation-exchange resin KU-2 was investigated. It was established, that the given materials are capable to absorb I2 both from distilled water, and from a water coolant of the WWER-type NPPs, with distribution factors K_d more than 10~3 cm~3/g at V/m = 100. Thus, it was found, that practically full I2 absorption (more than 95.0%) was achieved for 15 min. It was shown, that anion-exchange resin AV-18 is capable to adsorb CH_3(131)~I from a water solutions with distribution factors K_d more than 300 cm~3/g at V/m = 100.