Type: Article

Readily prepared resin-bound 2-pyridinethiol and its application for removal of mercury ions

Journal: Journal Of The Iranian Chemical Society (1735207X)Year: February 2012Volume: 9Issue: Pages: 61 - 65

Tangestaninejad S.^aMohammadpoor Baltork I.^aMoghadam M.^aMirkhani V.^a Iravani M.R. Ahmadi V.

a :University of Isfahan - IRAN(IR) - Isfahan

DOI:10.1007/s13738-011-0006-yLanguage: English

Abstract

2-Pyridinethiol attached to commercially available monosize chloromethylated polystyrene was used for selective removal of Hg(II) from aqueous solutions containing different amounts of Hg(II) (10-100 ppm). The adsorption rate was high at the beginning of the reaction and then equilibrium was reached in about 10 min. The maximum Hg(II) adsorption capacity of this novel and stable resin was about 55.94 mg/g of the dry polymer. The Hg(II) adsorption ability increased with increasing pH, in the range where the solubility of the Hg(II) was not affected by pH. More than 95% of the adsorbed Hg(II) was desorbed in 15 min using 1 M HNO 3 as an elution agent. The regeneration of this resin by strong acid was feasible and desorption ratio was very high (up to 96%). © 2011 Iranian Chemical Society.