Experimental study on surface reactions of heavy metal ions with quartz-aqueous ion concentration dependence

摘要

Adsorption of divalent metal ions, including Cu~2+, Pb~2+, Zn~2+, Cd~2+, and Ni~2+, on quartz surface was measured as a function of metal ion concentration at 30 deg. C under condi- tions of solution pH = 6.5 and ion strength I = 0.1 mol/L. Results of the experimental mea- surements can be described very well by adsorption isotherm equations of Freudlich. The corre- lation coefficients(r)of adsorption isotherm lines are > 0.96. Moreover, the experimental data were interpreted on the basis of surface complexation model.