METHOD FOR REMOVING RADIOACTIVE CESIUM, HYDROPHILIC RESIN COMPOSITION FOR REMOVAL OF RADIOACTIVE CESIUM, METHOD FOR REMOVING RADIOACTIVE IODINE AND RADIOACTIVE CESIUM, AND HYDROPHILIC RESIN COMPOSITION FOR REMOVAL OF RADIOACTIVE IODINE AND RADIOACTIVE CESIUM

摘要

[Problem] To provide a novel method for removing radioactive cesium which is simple and inexpensive and does not necessitate an energy source, e.g., electric power, and in which the removed radioactive cesium can be fixed and stably immobilized. The method makes it possible to reduce the volume of the radioactive waste according to need. [Solution] A method for removing radioactive cesium present in a radioactive waste liquid and/or solid radioactive matter using a hydrophilic resin composition that comprises a hydrophilic resin and a metal ferrocyanide compound, wherein the hydrophilic resin comprises at least one resin selected from the group consisting of a hydrophilic polyurethane resin, a hydrophilic polyurea resin, and a hydrophilic polyurethane/polyurea resin which each have a hydrophilic segment and have a polysiloxane segment in the backbone and/or side chains of the structure, the hydrophilic resin composition comprising 100 parts by mass of the hydrophilic resin and 1-200 parts by mass of the metal ferrocyanide compound dispersed therein.