【摘要】 研究了R-520树脂吸附金的过程。结果表明,在低酸时吸附效果最佳,氯金络离子的吸附率随盐酸浓度增加而下降,静态饱和金吸附容量为351.55mg/g干树脂,表观吸附速率常数k=2.06×10-4/s,吸附氯金络离子的过程符合Boyd液膜扩散模式,酸性硫脲溶液解吸载金树脂较完全。更多还原

【Abstract】 The experimental results about adsorption of gold on resin R-520 show that low acidity is suitable for enrichment of gold on the resin.The higher hydrochloric acid leads to the little adsorbance of gold.The static saturat-ed adsorptive capacity is 351.55mg/g and apparent adsorptive rate constant equals to 2.06×10^-4/s.The adsorptive process can be described by Boyd liquid membrane diffusion model.Acidic thiourea may desorb gold effec-tively under the proper conditions.更多还原