title: Copper Ferrocyanide Functionalized Core-Shell Magnetic Silica Composites for the Selective Removal of Cesium Ions from Radioactive Liquid Waste.
abstract: The copper ferrocyanide functionalized core-shell magnetic silica composite (mag@silica-CuFC) was prepared and was found to be easily separated from aqueous solutions by using magnetic field. The synthesized mag@silica-CuFC composite has a high sorption ability of Cs owing to its strong affinity for Cs as well as the high surface area of the supports. Cs sorption on the mag@silica-CuFC composite quickly reached the sorption equilibrium after 2 h of contact time. The effect of the presence of salts with a high concentration of up to 3.5 wt% on the efficiency of Cs sorption onto the composites was also studied. The maximum sorption ability was found to be maintained in the presence of up to 3.5 wt% of NaCl in the solution. Considering these results, the mag@silica-CuFC composite has great potential for use as an effective sorbent for the selective removal of radioactive Cs ions.
authors.forename: Hyun Kyu
authors.initials: HK
authors.lastname: Lee
authors.forename: Da Som
authors.initials: da S
authors.lastname: Yang
authors.forename: Wonzin
authors.initials: W
authors.lastname: Oh
authors.forename: Sang-June
authors.initials: SJ
authors.lastname: Choi
mesh_terms: D000327:Adsorption; D002586:Cesium / Q000737:chemistry / Q000302:isolation & purification*; D005295:Ferrocyanides / Q000737:chemistry*; D007700:Kinetics; D059346:Magnets / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry; D016062:Porosity; D011850:Radioactive Waste / Q000032:analysis*; D012822:Silicon Dioxide / Q000737:chemistry*; D012965:Sodium Chloride / Q000737:chemistry; D014867:Water / Q000737:chemistry
chemical_list: D005295:Ferrocyanides; D011850:Radioactive Waste; D014867:Water; D002586:Cesium; D012965:Sodium Chloride; D012822:Silicon Dioxide; C039105:cupric ferrocyanide