title: Preparation and characterization of zirconium (IV) molybdo tungsto vanado silicate as a novel inorganic ion exchanger in sorption of radionuclides.
abstract: A new mixed metal heteropoly anion-based cation exchanger Zr(IV) molybdo tungsto vanado silicate (ZMTVS) was prepared under varying conditions. The material was characterized by FTIR, X-ray diffraction, TGA-DTA and SEM techniques. Its ion exchange capacity (IEC) for K(+) was found to be 0.86 meq g(-1). Distribution coefficients (K(d)) values for 10 metal ions and three radioisotopes were determined. On the basis of K(d) values, two important and analytically difficult quantitative binary separations viz. Ni(II)-Co(II) and Ni(II)-Pb(II) were achieved on its column. Decontamination of aqueous nuclear waste solution was also studied.
authors.affiliation: Faculty of Chemistry, Damghan University of Basic Science, Damghan, Iran.
authors.forename: F Mohammadi
authors.initials: FM
authors.lastname: Zonoz
authors.forename: S J
authors.initials: SJ
authors.lastname: Ahmadi
authors.forename: S Attar
authors.initials: SA
authors.lastname: Nosrati
authors.forename: M Ghannadi
authors.initials: MG
authors.lastname: Maragheh
mesh_terms: D000327:Adsorption; D003035:Cobalt; D003666:Decontamination / Q000379:methods*; D007474:Ion Exchange; D007475:Ion Exchange Resins / Q000138:chemical synthesis / Q000737:chemistry*; D007854:Lead; D009532:Nickel; D011188:Potassium; D011850:Radioactive Waste; D011868:Radioisotopes / Q000302:isolation & purification*; D017640:Silicates / Q000737:chemistry*; D015040:Zirconium
chemical_list: D007475:Ion Exchange Resins; D011850:Radioactive Waste; D011868:Radioisotopes; D017640:Silicates; D007854:Lead; D003035:Cobalt; D009532:Nickel; D015040:Zirconium; D011188:Potassium