Development of Selective Separation and Recovery Method for Gold Using Polymer Bead Containing Epoxy Group

Abstract

The selective separation and recovery method of gold(Au) was developed with polymer bead containing epoxy group. Under strongly acidic condition at pH 1 or less, Au was adsorbed 82% to polymer bead. Namely, it is Au 3.2mg per polymer bead one gram. And, Au was desorbed from polymer bead about 90% under buffer solution of the pH 10 at room temperature or acidic condition using 0.5M hydrochloric acid solution at 80°C. Moreover, based on above experimental condition, Au was separated from other 64 kinds of ion contained at the same concentration of Au.