用353E树脂回收氰化镀金废液中的金
Recover Gold from Cyanide Waste Water of Gold Plated by 353E Resin
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摘要: 353E树脂是大孔双官能团阴离子交换树脂,对金具有良好的吸附性能,氰化镀金废液中的金是以Au(CN)2-配离子形式存在,为了回收镀金废液中的金,我们选用了353E树脂吸附法,研究了金的吸附条件,解吸条件,还原分法以及交换柱的放大实验等,为进一步工业回收提供了实验依据。Abstract: The method for the recover gold from cyanide waste water og gold plated by 353E an amion exchange resin with double function groups are reseached in the paper. The results indicate that Au(CN)2- complex anion can be strongly adsorbed onto the 353E resin in the range of pH 8-14 in cyanide medium. It is very easy to elute the gold from the loaded resin using 3% (υ/v) sulphuri acid-7% (ω/v) thiourea solution. At the same time the 353E resin has better adsorptivity Enlarge test of anion-exchange column is identical in experimental result of a little ion-exchange column. Provide scientitic basis for further industrial recover gold.