AECTS adsorbed Co2+ mainly by complexation and physical style, the experimental data fit well into the Langmuir and Freundlich adsorption isotherm at the same time.

• AECTS对Cu~(2+)和Ni~(2+)的吸附符合Langmuir等温方程，属于单分子层吸附； AECTS对Co~(2+)的吸附同时符合Frundlich模型和Langmuir模型；