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›› 2004, Vol. 4 ›› Issue (5): 397-400.

• 反应与分离 • 上一篇    下一篇

大孔强酸树脂吸附硫脲金

胡小玲,张生,管萍,张新丽   

  1. 西北工业大学化学工程系
  • 出版日期:2004-10-20 发布日期:2004-10-20

Adsorption of Thiourea Gold in Acidic Thiourea Leaching Liquor by D072 Macroporous Strong Acid Resin

HU Xiao-ling,ZHANG Sheng,GUAN Ping ,ZHASNG Xin-li   

  1. Department of Chemical Engineering, Northwestern Polytechnical University
  • Online:2004-10-20 Published:2004-10-20

摘要: 研究了D072大孔强酸性阳离子交换树脂从硫脲[Tu=CS(NH2)2]浸金液中吸附Au(Tu)2+的性能和机理. 结果表明,pH=2.0时,树脂对Au(Tu)2+有优良的吸附性能,金的交换容量为78.95 mg/g (Au/干树脂),吸附的硫脲金可用乙醇-硫酸水溶液洗脱,洗脱率可达96.5%. D072树脂对Au(Tu)2+的吸附符合Langmuir吸附模型.

关键词: 树脂, 硫脲金, 吸附, 洗脱

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.

Key words: resin, thiourea gold, adsorption, elution