The adsorption effect of montmorillonite includes surface adsorption and ion exchange adsorption, but its adsorption effect on non-ionic organic pollutants depends on the size of organic cations, and also depends on the cation exchange capacity of different montmorillonites, so the effect is relatively unstable.

Zeolite is a water-bearing alkali metal or alkaline earth metal silica-aluminate mineral, which is a tetrahedron composed of three elements: silicon (Si), aluminum (Al), and oxygen (O), among which the silicon and oxygen tetrahedra and the aluminum-oxygen tetrahedra form an infinitely expanding thre