Thiol containing sulfonamide based polymeric sorbent for mercury extraction

Abstract

AbstractA new polymeric resin with thiol pendant functions has been prepared for the extraction of mercuric ions. The thiol containing sulfonamide based resin with 3.5 mmol/g total nitrogen content is able to selectively sorb mercury from aqueous solutions. The mercury sorption capacity of the resin is around 1.70 mmol/g 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) ions also were extractable in quantities (1.0–1.65 mmol/g). The sorbed mercury can be eluted by repeated treatment with 4M HNO3 without hydrolysis of the amide groups. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009