New Composite Materials Containing Fine Particles of D-Elements for Localization of Molecular Radioactive Iodine in Water Coolants of Nuclear Power Plants

摘要

New composite materials based on KU-2 cation exchanger that contains various compounds of Ni and Zn are developed for localization of I_2 in the water coolant of nuclear power plants (NPPs). Composite materials containing nanometer particles of Ni and Zn compounds are able to quickly and efficiently convert I_2 into ionic forms in the water coolant of the primary circuit of an N PP. Almost complete conversion of I? (>99%) in the aqueous phase is achieved after 15 min of contact of the liquid phase and the developed composite material. It is shown that the use of a tandem of the developed composite material and AB-18 anion exchanger makes it possible to isolate 17 in the water coolant of the primary circuit of an NPP almost completely.