Preparation of crosslinked quaternary amide-sulfonamide resin for removal of mercury ions from aqueous solutions


Yavuz E. , TURAN G. T. , ALKAZAN S., Şenkal B. F.

DESALINATION AND WATER TREATMENT, vol.56, no.8, pp.2145-2153, 2015 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 56 Issue: 8
  • Publication Date: 2015
  • Doi Number: 10.1080/19443994.2014.958539
  • Title of Journal : DESALINATION AND WATER TREATMENT
  • Page Numbers: pp.2145-2153

Abstract

Cross-linked copolymer beads were prepared by suspension polymerization of styrene (0.90mol) and divinyl benzene (DVB) (0.10mol) mixtures. The resulting copolymer beads with sulfonamide-based quaternary amide functions were prepared in three steps: (1) by chlorosulfonation with chlorosulfonic acid; (2) by sulfonamidation reaction with N,N-dimethylethylenediamine; and (3) by quaternization reaction with chloroacetamide. The resulting polymer resin, which had a chloroacetamide content of 2.50mmol/g, was effective in extracting mercury from aqueous solutions. The mercury sorption capacity was around 3.0mmol/g in non-buffered conditions. Experiments performed in identical conditions with several metal ions revealed that Cd(II), Mg(II), Zn(II), and Fe(III) ions also were extractable in low quantities (0.2-0.8mmol/g). The sorbed mercury could be eluted by repeated treatment with hot acetic acid without hydrolysis of the amide groups.