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Equilibrium and kinetic studies of palladium(II) ions sorption onto Dowex resins

Equilibrium and kinetic studies of palladium(II) ions sorption onto Dowex resins
File Size:
273.27 kB
Author:
Anna Wołowicz, Zbigniew Hubicki, Magdalena Greluk
Email:
annamyrta[at]poczta[dot]onet[dot]pl
Date:
13 August 2013
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Abstract: Palladium(II) sorption was studied in hydrochloric acid solutions with sodium chloride addition onto Dowex MSA-1 and Dowex MSA-2 resins by means of the static method. Th e dependence between the amount of palladium(II) ions sorbed at time tin a disequilibrium state (qt) as well as the sorption capacities (qe) and phases contact time were obtained. Th e results were applied in kinetic studies using the pseudo-fi rst (Lagergren equation) and pseudo-second order kinetic equations (linear form of Blanchard equation proposed by Ho, PSO). Moreover, the equilibrium studies were caried out at ambient temperature and fi tted to the Langmuir and Freundlich isotherms. Th e AFM pictures of the surface of anion exchange resins before and after the loading process were also recorded. Both resins exhibit high selectivity towards palladium(II) ions. Th e sorption capacities are in the range 7–10 mg/g for both resins under discussion in all examined solutions. Th e pseudo-second order kinetic equation and the Langmuir isotherm show the best fi t with the experimental data.

Keywords: palladium, sorption, pseudo-fi rst order kinetic equation, pseudo-second order kinetic equation, isotherms

Area: Natural Science

BibTeX:

@article{Wolowicz2011,
  author = {Anna Wołowicz and Zbigniew Hubicki and Magdalena Greluk},
  title = {Equilibrium and kinetic studies of palladium(II) ions sorption onto Dowex resins},
  journal = {Challenges of Modern Technology},
  year = {2011},
  volume = {2},
  number = {2},
  pages = {71--75},
  url = {http://www.journal.young-scientists.eu/index.php/isuues/file/38-equilibrium-and-kinetic-studies-of-palladium-ii-ions-sorption-onto-dowex-resins}
}
 
 

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