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Abstract:
The adsorption of Ni(II) in aqueous solution with ion exchange resins was investigated, and 001×14.5 strong acidic cation ion exchange resin showed the maximum capacity by the resin selection experiment. The adsorption properties of the selected 001×14.5 resin for Ni(II) were studied by static experiments. The results indicated that the influence of external diffusion was eliminated when stirring speed was over 100 r/min, and the best pH value was 7, and that the percent removal of Ni(II) increased as the consumption of resin. The adsorption behavior of 001×14.5 for Ni(II), which was the favourable adsorption, conformed the Langmuir isotherm equation well. The adsorption process corresponded with pseudo-second-order kinetic model, the activation energy was 30.9 kJ/mol, and the kinetics experiments showed that intrapartical diffusion was the main rate-controlling step. The desorption efficiency of resin to Ni(II) could be over 98% with 1 mol/L sulfuric acid to regenerate the saturated resin.
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Chinese Journal of Environmental Engineering
ISSN: 1673-9108
CN: 11-5591/X
Year: 2013
Issue: 8
Volume: 7
Page: 3019-3024
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 2
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