Adsorption Properties Of Platinum From Hydrochloric Acid Solutions On Anionic Exchange Resin
The adsorption properties of platinum from hydrochloric acid solutions on anionic exchange resin (AG1-x8) were investigated. The adsorption equilibrium isotherm of platinum on AG1-x8 resin followed Langmuir adsorption model. Thermodynamic study results indicate that adsorption of Pt on AG1-x8 resin was spontaneous and endothermic. The adsorption of Pt increased with increasing the temperature and decreasing the acid concentration in the stock solution. Kinetic parameters, such as the mass transfer coefficients and controlling-step diffusion coefficients, were evaluated, and the external mass transport resistance was indicated to be the controlling mass transfer step.