Abstract：The adsorption and exchange properties of thiourea gold complex by D072 macroporous strong acidic resin from a weak acid solution were investigated. The results showed that resin D072 could effectively adsorb Au(Tu)2+ ions (Tu=thiourea) at 25℃. The static saturated adsorption capacity of the resin could reach 78.95 mg/g (Au/resin). The adsorption rate was 98.4%. The loaded resin could be qualitatively eluted with 94% alcohol, 2% sulfuric acid solution and 4% water, the elution rate of thiourea gold was 96.5%. The adsorption isotherm line was of the Langmuir type. The eluted resin was regenerated with 5% Na2S2O3 solution. The adsorption capacity of the regenerated resin was uniform.
2004, Vol. 4 
