CJCU

Chem. J. Chinese Universities ›› 1988, Vol. 9 ›› Issue (8): 823.

• Articles • Previous Articles     Next Articles

Chemistry of Ion Exchange and Adsorption of Gold(Ⅱ)——Adsorption Equilibrium and Breackthrough Process of AuCI4- on the Macroporous Crosslinked Polyacrylate Resin MET-802

Chen Jingren1, Qiu Ling1, Chang Zheng1, Lin Xue2, He Binglin2   

  1. 1. Department of Modern Physios, Lanzhou University, Lanzhou;
    2. Department of Chemisitry, Nanhai University, Tianjin
  • Received:1987-02-04 Online:1988-08-24 Published:1988-08-24

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Abstract: The adsorption equilibrium and breackthrough process of AuCl4- in the medium of hydrochloric acid on MET-802 (corresponding to Amberlite XAD-7) has been studied.In the range of 0.25mol/L~1.00mol/L HCl the selectivity coefficients of AuCl4- to Cl- have been calculated from the experimental values. It has been confirmed that transfer of AuCl4- in the breackthrough process is main-controlled by the film diffusion process.The thickness of film δ= 5.8×10-2 (v)-0.65, which is independent of both the concentration of AuCl4- and the size of the resin. HETPis followed by Snyder equations h= 1.8 ×102(v)0.35 .

Key words: Ion exchange and adsorption of gold, Adsorption equilium, Breackthrough process

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