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A method for removing radioactive cesium and/or iodine from a radioactive substance in liquid and/or a solid matter using a hydrophilic resin composition comprising a hydrophilic resin and a metal ferrocyanide compound, wherein the hydrophilic resin includes at least one hydrophilic resin selected f

A method for removing radioactive cesium and/or iodine from a radioactive substance in liquid and/or a solid matter using a hydrophilic resin composition comprising a hydrophilic resin and a metal ferrocyanide compound, wherein the hydrophilic resin includes at least one hydrophilic resin selected from the group consisting of a hydrophilic polyurethane resin, a hydrophilic polyurea resin, and a hydrophilic polyurethane-polyurea resin each having at least a hydrophilic segment, and a metal ferrocyanide compound is dispersed in the hydrophilic resin composition in a ratio of at least 1 to 200 mass parts relative to 100 mass parts of the hydrophilic resin.

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1. A method for removing radioactive cesium applying removing processing to radioactive cesium in a radioactive waste liquid and/or a radioactive solid matter using a hydrophilic resin composition comprising a hydrophilic resin and a metal ferrocyanide compound, wherein the hydrophilic resin composi

1. A method for removing radioactive cesium applying removing processing to radioactive cesium in a radioactive waste liquid and/or a radioactive solid matter using a hydrophilic resin composition comprising a hydrophilic resin and a metal ferrocyanide compound, wherein the hydrophilic resin composition comprises at least one hydrophilic resin selected from the group consisting of a hydrophilic polyurethane resin, a hydrophilic polyurea resin, and a hydrophilic polyurethane-polyurea resin each having a hydrophilic segment; andthe metal ferrocyanide compound is dispersed in the hydrophilic resin composition in a ratio of at least 1 to 200 mass parts relative to 100 mass parts of the hydrophilic resin. 2. A method for removing radioactive cesium applying removing processing to radioactive cesium present in a radioactive waste liquid and/or a radioactive solid matter using a hydrophilic resin composition comprising a hydrophilic resin and a metal ferrocyanide compound, wherein the hydrophilic resin comprises at least one selected from the group consisting of a hydrophilic polyurethane resin, a hydrophilic polyurea resin, and a hydrophilic polyurethane-polyurea resin each having a hydrophilic segment and further each having, in the main chain and/or a side chain in the structure thereof, a polysiloxane segment; andthe hydrophilic resin composition comprises the metal ferrocyanide compound dispersed therein in a ratio of at least 1 to 200 mass parts relative to 100 mass parts of the hydrophilic resin. 3. The method for removing radioactive cesium according to claim 2, wherein the hydrophilic resin is a resin formed from, as a part of a raw material, a compound having at least one active hydrogen-containing group and a polysiloxane segment in the same molecule. 4. The method for removing radioactive cesium according to claim 1, wherein the hydrophilic segment is a polyethylene oxide segment. 5. The method for removing radioactive cesium according to claim 1, wherein the metal ferrocyanide compound is a compound represented by the following general formula (1): AxMy[Fe(CN)6]  (1) [in the formula, A is any one selected from K, Na, and NH4, M is any one selected from Ca, Mn, Fe, Co, Ni, Cu, and Zn, x and y satisfy an equation x+ny=4 (x is an integer from 0 to 3), and n represents a valence number of M]. 6. A hydrophilic resin composition for removing radioactive cesium exhibiting a function capable of immobilizing radioactive cesium in liquid and/or a solid matter, wherein the hydrophilic resin composition comprises a hydrophilic resin and a metal ferrocyanide compound;the hydrophilic resin is at least one resin selected from the group consisting of a hydrophilic polyurethane resin, a hydrophilic polyurea resin, and a hydrophilic polyurethane-polyurea resin each having a hydrophilic segment and each obtained by reacting an organic polyisocyanate with a high-molecular weight hydrophilic polyol and/or polyamine being a hydrophilic component, the resin being insoluble to water and hot water; andthe metal ferrocyanide compound is dispersed in the hydrophilic resin composition in a ratio of at least 1 to 200 mass parts relative to 100 mass parts of the hydrophilic resin. 7. The hydrophilic resin composition for removing radioactive cesium according to claim 6, wherein the hydrophilic segment of the hydrophilic resin is a polyethylene oxide segment. 8. The hydrophilic resin composition for removing radioactive cesium according to claim 6, wherein the metal ferrocyanide compound is a compound represented by the following general formula (1): AxMy[Fe(CN)6]  (1) [in the formula, A is any one selected from K, Na, and NH4, M is any one selected from Ca, Mn, Fe, Co, Ni, Cu, and Zn, x and y satisfy an equation x+ny=4 (x is an integer from 0 to 3), and n represents a valence number of M]. 9. A hydrophilic resin composition for removing radioactive cesium exhibiting a function capable of immobilizing radioactive cesium in liquid and/or a solid matter, wherein the hydrophilic resin composition comprises a hydrophilic resin and a metal ferrocyanide compound;the hydrophilic resin is a resin having a hydrophilic segment and a polysiloxane segment and obtained by reacting, as a part of a raw material, a compound having at least one active hydrogen-containing group and a polysiloxane segment in the same molecule, the resin being insoluble to water and hot water; andthe metal ferrocyanide compound is dispersed in the hydrophilic resin composition in a ratio of at least 1 to 200 mass parts relative to 100 mass parts of the hydrophilic resin. 10. A hydrophilic resin composition for removing radioactive cesium exhibiting a function capable of immobilizing radioactive cesium in liquid and/or a solid matter, wherein the hydrophilic resin composition comprises a hydrophilic resin and a metal ferrocyanide compound;the hydrophilic resin is at least one selected from the group consisting of a hydrophilic polyurethane resin, a hydrophilic polyurea resin, and a hydrophilic polyurethane-polyurea resin each having a hydrophilic segment, further each having, in the main chain and/or a side chain in the structure thereof, a polysiloxane segment, and each obtained by reacting an organic polyisocyanate, a high molecular weight polyol and/or polyamine being a hydrophilic component, and a compound having at least one active hydrogen-containing group and a polysiloxane segment in the same molecule; andthe metal ferrocyanide compound is dispersed in the hydrophilic resin composition in a ratio of at least 1 to 200 mass parts relative to 100 mass parts of the hydrophilic resin. 11. A method for removing radioactive iodine and radioactive cesium applying removing processing to both of radioactive iodine and radioactive cesium present in a radioactive waste liquid and/or a radioactive solid matter using a hydrophilic resin composition comprising a hydrophilic resin and a metal ferrocyanide compound, wherein the hydrophilic resin comprises at least one selected from the group consisting of a hydrophilic polyurethane resin, a hydrophilic polyurea resin, and a hydrophilic polyurethane-polyurea resin each having a hydrophilic segment and further each having, in the main chain and/or a side chain in the structure thereof, a tertiary amino group; andthe hydrophilic resin composition comprises the metal ferrocyanide compound dispersed therein in a ratio of at least 1 to 200 mass parts relative to 100 mass parts of the hydrophilic resin. 12. The method for removing radioactive iodine and radioactive cesium according to claim 11, wherein the hydrophilic resin is a resin formed from, as a part of a raw material, a polyol having at least one tertiary amino group or a polyamine having at least one tertiary amino group. 13. The method for removing radioactive iodine and radioactive cesium according to claim 11, wherein the hydrophilic segment is a polyethylene oxide segment. 14. The method for removing radioactive iodine and radioactive cesium according to claim 11, wherein the metal ferrocyanide compound is a compound represented by the following general formula (1): AxMy[Fe(CN)6]  (1) [in the formula, A is any one selected from K, Na, and NH4, M is any one selected from Ca, Mn, Fe, Co, Ni, Cu, and Zn, x and y satisfy an equation x+ny=4 (x is an integer from 0 to 3), and n represents a valence number of M]. 15. A method for removing radioactive iodine and radioactive cesium applying removing processing to both of radioactive iodine and radioactive cesium present in a radioactive waste liquid and/or a radioactive solid matter using a hydrophilic resin composition comprising a hydrophilic resin and a metal ferrocyanide compound, wherein the hydrophilic resin comprises at least one selected from the group consisting of a hydrophilic polyurethane resin, a hydrophilic polyurea resin, and a hydrophilic polyurethane-polyurea resin each having a hydrophilic segment and further each having, in the main chain and/or a side chain in the structure thereof, a tertiary amino group and a polysiloxane segment; andthe hydrophilic resin composition comprises the metal ferrocyanide compound dispersed therein in a ratio of at least 1 to 200 mass parts relative to 100 mass parts of the hydrophilic resin. 16. The method for removing radioactive iodine and radioactive cesium according to claim 15, wherein the hydrophilic resin is a resin formed from, as a part of a raw material, a polyol having at least one tertiary amino group or a polyamine having at least one tertiary amino group and a compound having at least one active hydrogen-containing group and a polysiloxane segment in the same molecule. 17. A hydrophilic resin composition for removing radioactive iodine and radioactive cesium exhibiting a function capable of immobilizing both of radioactive iodine and radioactive cesium in liquid and/or a solid matter, wherein the hydrophilic resin composition comprises a hydrophilic resin and a metal ferrocyanide compound;the hydrophilic resin is a resin having a hydrophilic segment, having, in the molecular chain, a tertiary amino group, and formed from, as a part of a raw material, a polyol having at least one tertiary amino group or a polyamine having at least one tertiary amino group, the resin being insoluble to water and hot water; andthe metal ferrocyanide compound is dispersed in the hydrophilic resin composition in a ratio of at least 1 to 200 mass parts relative to 100 mass parts of the hydrophilic resin. 18. The hydrophilic resin composition for removing radioactive iodine and radioactive cesium according to claim 17, wherein the hydrophilic segment of the hydrophilic resin is a polyethylene oxide segment. 19. The hydrophilic resin composition for removing radioactive iodine and radioactive cesium according to claim 17, wherein the metal ferrocyanide compound is a compound represented by the following general formula (1): AxMy[Fe(CN)6]  (1) [in the formula, A is any one selected from K, Na, and NH4, M is any one selected from Ca, Mn, Fe, Co, Ni, Cu, and Zn, x and y satisfy an equation x+ny=4 (x is an integer from 0 to 3), and n represents a valence number of M]. 20. A hydrophilic resin composition for removing radioactive iodine and radioactive cesium exhibiting a function capable of immobilizing both of radioactive iodine and radioactive cesium in liquid and/or a solid matter, wherein the hydrophilic resin composition comprises a hydrophilic resin and a metal ferrocyanide compound;the hydrophilic resin is at least one selected from the group consisting of a hydrophilic polyurethane resin, a hydrophilic polyurea resin, and a hydrophilic polyurethane-polyurea resin each having a hydrophilic segment, further each having, in the main chain and/or a side chain in the structure thereof, a tertiary amino group, and each obtained by reacting an organic polyisocyanate, a high molecular weight hydrophilic polyol and/or polyamine being a hydrophilic component, and a compound having at least one active hydrogen-containing group and at least one tertiary amino group in the same molecule; andthe metal ferrocyanide compound is dispersed in the hydrophilic resin composition in a ratio of at least 1 to 200 mass parts relative to 100 mass parts of the hydrophilic resin. 21. A hydrophilic resin composition for removing radioactive iodine and radioactive cesium exhibiting a function capable of immobilizing both of radioactive iodine and radioactive cesium in liquid and/or a solid matter, wherein the hydrophilic resin composition comprises a hydrophilic resin and a metal ferrocyanide compound;the hydrophilic resin is a resin having a hydrophilic segment, having, in the molecular chain, a tertiary amino group and a polysiloxane segment, and formed from, as a part of a raw material, a polyol having at least one tertiary amino group or a polyamine having at least one tertiary amino group and a compound having at least one active hydrogen-containing group and a polysiloxane segment in the same molecule, the resin being insoluble to water and hot water; andthe metal ferrocyanide compound is dispersed in the hydrophilic resin composition in a ratio of at least 1 to 200 mass parts relative to 100 mass parts of the hydrophilic resin. 22. A hydrophilic resin composition for removing radioactive iodine and radioactive cesium exhibiting a function capable of immobilizing both of radioactive iodine and radioactive cesium in liquid and/or a solid matter, wherein the hydrophilic resin composition comprises a hydrophilic resin and a metal ferrocyanide compound;the hydrophilic resin is at least one selected from the group consisting of a hydrophilic polyurethane resin, a hydrophilic polyurea resin, and a hydrophilic polyurethane-polyurea resin each having a hydrophilic segment, each having, in the main chain and/or a side chain in the structure thereof, a tertiary amino group and a polysiloxane segment, and each obtained by reacting an organic polyisocyanate, a high molecular weight hydrophilic polyol and/or polyamine being a hydrophilic component, a compound having at least one active hydrogen-containing group and at least one tertiary amino group in the same molecule, and a compound having at least one active hydrogen-containing group and a polysiloxane segment in the same molecule; andthe metal ferrocyanide compound is dispersed in the hydrophilic resin composition in a ratio of at least 1 to 200 mass parts relative to 100 mass parts of the hydrophilic resin.