Equilibrium modeling of the adsorption showed that at high concentration, the adsorption of Ni~(2+), Zn~(2+), Pb~(2+) on fly ash and the adsorption of Ni~(2+), Cd~(2+) on bentonite were fitted to a Langmuir isotherm.

• 平衡吸附模型说明在高浓度下,Ni~(2+)、Zn~(2+)、Pd~(2+)在粉煤灰中,Ni~(2+)、Pd~(2+)在膨润土中的吸附符合Langmuir模式。