摘要
研究Ｐ－９５０哌啶树脂吸附金的动力学结果表明：该树脂从氯化物溶液中吸附金的动力学符合Ｂｏｙｄ液膜扩散方程，吸附金的速率随盐酸浓度的增加而下降．当温度上升时，吸附金的分配比增加，表明该树脂吸金是吸热反应．测得的液膜扩散系数Ｋ＝５．５８×１０－５ｓ－１，吸附表观热焓△Ｈ＝２５．９２ｋＪ／ｍｏｌ．
Kinetics of gold adsorption by a new type resin (P-950) was investigated. The experimental results demonstrated that the kinedcs of gold adsorption from chloride solution by this kind resinis accord with Boyd's diffusion equation of liquid film. The absorption rate of gold reduced remarkablywith the increase of HCI concentration. The distribution coefficient of adsorption K was 5. 58×10-5s-1 and the apparent heat effect of the adsorption △H was 25. 92 kJ/mol. That the distributionratio of gold adsorption D enlarged with the increase of temperature indicated that the adsorption process of gold on the resin was an endothermal reaction.
出处
《黄金》
CAS
北大核心
1996年第3期34-37,共4页
Gold
