Anchoring of CoHFC nanoparticles on clinoptilolite for remedy of nuclear wastes
| Autor: | Reza Davarkhah, Taher Yousefi, Mohammad Ali Moosavian, Hamid Reza Mahmudian, Meisam Torab-Mostaedi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Clinoptilolite
Chemistry nanoparticle clinoptilolite Nanoparticle Anchoring 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences natural zeolite Nuclear Energy and Engineering Chemical engineering adsorption lcsh:QC770-798 cobalt ferrocyanide lcsh:Nuclear and particle physics. Atomic energy. Radioactivity Sr(II) Cs(I) 0210 nano-technology Safety Risk Reliability and Quality |
| Zdroj: | Nuclear Technology and Radiation Protection, Vol 32, Iss 1, Pp 25-36 (2017) |
| ISSN: | 1452-8185 1451-3994 |
| DOI: | 10.2298/ntrp1701025y |
| Popis: | To improve the mechanical properties, the cobalt ferrocyanide precipitation was carried out on clinoptilolite as an inorganic polymer. In this work the combination of two important factors, stability (zeolite) and high adsorption capacity (cobalt ferrocyanide) were considered to improve the ions uptake ability of adsorbent. The modification was approved by X-ray diffraction, Scanning electronic microscopy and Fourier transform infrared spectroscopy. The modified zeolite was applied to remove Sr(II) and Cs(I) ions from aqueous solution in a batch system. The adsorption capacities of modified zeolite for Cs(I) and Sr(II) improved to 90 and 130 mgg-1, respectively. The Sr(II) and Cs(I) removal were investigated as a function of shaking time, pH, Sr(II), and Cs(I) initial concentration and temperature. The experimental data were fitted well to Langmuir isotherm model for two sorbet metal ions. The time dependence sorption data showed that the uptakes of Cs(I) and Sr(II) were very rapid and apparent sorption equilibriums were achieved within 100 min of contact time. The kinetic experimental data were fitted to the pseudo-first order, pseudo-second order, the double exponential, Elovich and intraparticle diffusion models. The sorption rates and capacities as well as rate constants were evaluated. |
| Databáze: | OpenAIRE |
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