D_(001)CC强酸性树脂吸附分离金银

A Study on the absorption and saparation of gold and silver by D_(001)CC strong acid resin

介绍了用Ｄ００１ＣＣ大孔强酸性阳离子交换树脂从硫脲浸金液中吸附分离金和银的性能。结果表明，在酸性介质中，该树脂对硫脲金（Ａｕ（Ｔｕ）２＋ ）、硫脲银（Ａｇ（Ｔｕ）２＋ ）配离子（Ｔｕ＝ ＣＳ（ＮＨ２）２）均有良好的吸附性能。吸附容量Ａｕ 为６８．８ｍ ｇ／ｇ－Ｒｅｓｉｎ，Ａｇ 为９９．１ｍ ｇ／ｇ－Ｒｅｓｉｎ。负载金银的树脂可分别用ＮａＣＮ－ＮａＯＨ 溶液和Ｎａ２Ｓ２Ｏ３ 的Ｈ３ＢＯ３－ＮａＯＨ 缓冲溶液定量洗脱。

The adsorption and separation properties of gold and silver by D 001 CC strong acid resin from weak acid solution have been investigated . The results show that resin can effectively adsorb gold thiourea complex ions and silver thiourea complex ions.The saturated adsorption capacity is as high as 68.8 mg(Au)/g-sesin and 99.1 mg(Ag)/g sesin.The gold and silver absorbed on the resin can be guantitatively eluted by the solution of N aCN N aOH and buffer solution of H 3BO 3 -NaOH with solution of Na 2 S 2O 3. The gold and silver have been separated.