Chlorates(VII) removal on Dowex™PSR-2 resin

Dorota Kołodyńska, Aleksandra Łyko, Marzena Gęca, Zbigniew Hubicki

Abstract


Lately there has been observed the increased presence of chlorates(VII) in the natural environment which can affect human health negatively. Therefore the removal of chlorate(VII) ions using the gel type resin functionalized with the tri-n-butyl ammonium (Dowex™PSR-2) from waters was studied. The main aim was to evaluate the effects of experimental conditions including contact time, initial solution concentration, pH and temperature on chlorate(VII) ions removal as well as the anion exchanger properties on chlorate(VII) ions sorption. It was found that only the pseudo second order model described the experimental data well and the intraparticle diffusion was not the rate-limiting step. According to the Freundlich model, the qe value was to be 69.26 mg/g at optimum conditions (pH 7.0 at 25 oC).


Keywords


chlorates; removal; ion exchange; Dowex™PSR-2

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DOI: http://dx.doi.org/10.17951/aa.2016.71.1.105
Date of publication: 2016-05-24 11:38:48
Date of submission: 2015-11-29 16:15:38


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