Application of commercially available anion exchange resins for preconcentration of palladium(II) complexes from chloride–nitrate solutions

Hubicki, Zbigniew; Wołowicz, Anna; Wawrzkiewicz, Monika

doi:10.1016/j.cej.2008.12.007

Cited by 10 publications

(1 citation statement)

References 30 publications

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“…In our previous studies − only two examples of acrylic, weakly basic anion exchange resin applications in Pd(II) removal can be found. These are Varion ADAM (macroporous) and Amberlyst A-24 (gel), but the capacities of both resins as given by the manufacturer were much lower that that for Purolite A-830.…”

Section: Introductionmentioning

confidence: 99%

Applicability of New Acrylic, Weakly Basic Anion Exchanger Purolite A-830 of Very High Capacity in Removal of Palladium(II) Chloro-complexes

Wołowicz

Hubicki

2012

Ind. Eng. Chem. Res.

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According to the manufacture description Purolite A-830 is a sorbent of very high capacity (2.75 eq/dm 3 ), which was the main reason for examining its applicability in the removal of palladium(II) chloro-complexes from acidic solutions and comparison of its experimental capacity with other weakly basic anion exchangers. The influence of several parameters such as hydrochloric and nitric acids concentrations, competitive anions (effect of AlCl 3 addition) and temperature increase were studied. Sorption isotherms were obtained and modeled using the Langmuir and the Freundlich model. The influences of agitation speed, palladium concentration, and particle size on sorption kinetics were considered. Kinetic curves were modeled using the pseudofirstand pseudo-second-order kinetic equations. According to the evaluation using the Langmuir equation, the maximum sorption capacity obtained from the Langmuir isotherm was equal to 356.88 mg Pd(II)/g. The reduction of Pd(II) uptake was observed with the increasing concentration of chloride ions, temperature, and AlCl 3 addition.

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