Adsorption studies of zinc ions on barium titanate from aqueous solution
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R. Guin
Summary
Adsorption of Zn(II) ions on barium titanate has been studied as a function of concentration of Zn(II) (1.0 × −5–5.0 × 10−7 M), temperature (281–313 K) and pH (4–8) of the adsorptive solution using 65Zn tracer and γ-ray spectroscopy. The adsorption process was found to obey the first order rate law and the Freundlich adsorption isotherm for the range of concentration studied. The uptake increases from 32 to 70% with the increase in dilution (from 1.0 × 10−5 to 5.0 × 10−7 M). The extent of adsorption also increases with increasing temperature and pH of solution. The activation energy for the process was determined to be 12.3 kJ mol−1. The removal of Zn(II) ions by barium titanate appears to be endothermic and irreversible.
© Oldenbourg Wissenschaftsverlag, München
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Artikel in diesem Heft
- Cross section data for the production of the positron emitting niobium isotope 90Nb via the 90Zr(p, n)-reaction
- Transuranic elements determination in spanish NPP-wastes on the basis of gross alpha activity
- A comparative evaluation of synergistic extraction behaviour of hexavalent uranium with thenoyl tri-fluoro-acetone (HTTA) and 1-phenyl, 3-methyl, 4-benzoyl pyrazolone-5 (HPMBP) using mono-functional and bi-functional neutral donors
- Transport of Th(IV) and U(VI) through barium silico-phosphate composite membrane using electric field
- Evaluation of the complexation behavior between humic acid and UO22+ with fluorescence spectroscopy and its mixture analysis
- Investigation of sorption of Tb(III) by 2-thenoyltrifluoroacetone supported onto polyurethane foam
- Selective carrier-mediated cesium transport through polymer inclusion membranes by calix[4]arene-crown-6 carriers from complex aqueous mixtures
- Adsorption studies of zinc ions on barium titanate from aqueous solution
- The enrichment of magnesium isotopes by AM15C5 bonded ion exchanger
