Selective removal of Cs using copper ferrocyanide incorporated on organically functionalized silica supports

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 303; no. 1; pp. 199 - 208
• Main Authors: Park, Younjin, Kim, Chorong, Choi, Sang-June
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.01.2015; Springer
• Subjects: Cesium ions; Chelation; Chemistry; Chemistry and Materials Science; Composite materials; Copper; Diagnostic Radiology; Ethylenediamines; Functional groups; Hadrons; Heavy Ions; Inorganic Chemistry; Ion exchangers; Iron compounds; Nuclear Chemistry; Nuclear Physics; Physical Chemistry; Silica; Silicon dioxide; Sorption; Sorption; Cesium; Composites; Mesoporous silica; Copper ferrocyanide
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-014-3337-1

The formatted ethylenediamine functional group on silica supports gives the desired chelation with copper ferrocyanide for the selective removal of cesium ions. The copper ferrocyanide was well dispersed on the silica surface. Ion exchange capacity tests demonstrated that the functionalization of copper ferrocyanide on silica showed high rate of Cs removal. Loading of the organic functional group on silica at a rate of 30 % supported a high ion exchange capacity (0.92 mmol/g) for Cs ion. The sorption kinetics and the effect of co-existing salt on the efficiency of the composite material for Cs removal were also discussed.