Preparation of the Sulfonamide Containing Block Copolymer as Polymeric Sorbent for Removal of Mercury from Aqueous Solutions

Gürsel Y., YAVUZ E., GOKAY G., Şenkal B. F.

SEPARATION SCIENCE AND TECHNOLOGY, vol.45, no.16, pp.2406-2412, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 16
  • Publication Date: 2010
  • Doi Number: 10.1080/01496395.2010.490543
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2406-2412
  • Istanbul Technical University Affiliated: Yes


A new sulfonamide containing polymeric sorbent for the removal of mercury ions from waste waters was prepared starting from poly(glycidyl methacrylate)-b-poly(ethylene glycol)-b-poly(glycidyl methacrylate) (PGMA-b-PEG-b-PGMA) triblock copolymer prepared by using the ATRP method. Epoxy groups on the block copolymer were functionalized with amino groups. Ammonia-functionalized PGMA-b-PEG-b-PGMA was treated with excess of benzenesulfonyl chloride to obtain a sulfonamide-based polymeric sorbent. The sulfonamide containing the polymeric sorbent with a 3.5mmol center dot g-1 total nitrogen content is able to selectively sorb mercury from aqueous solutions. The mercury sorption capacity of the resin is around 3.12mmol g-1 under non-buffered conditions. Experiments performed in identical conditions with several metal ions revealed that Cd(II), Pb(II), Zn(II), Fe(III), and Fe(II) also were extractable in quantities (0-0.45mmol/g). The sorbed mercury can be eluted by repeated treatment with 4M HNO3 without hydrolysis of the sulfonamide groups.