| Zeolite is a kind of Aluminosilicate minerals distributing widely in the nature, it is with a relative large superficial area and ion exchange capacity, and it can be used in water treatment due to its absorption and ion exchange. But because of some defects, zeolite needs to be modified to improve its property.This modified quaternary ammonium salt of chitosan was successfully synthesisd.and It was proved by IR,H-NMR for the successfully grafting of GTA group.We successfully conduct the zeolite surface modification and HACC exchange adsorption.And it was proved by SEM,Particle size distribution, Zeta potential and Surface area analysis.And we got the water purification material which has better able to remove organic pollutants in water.Compared with unmodified zeolite the organic zeolite'adsorption capacity for humic acid shows that organic zeolite'adsorption capacity has been significantly improved. The conclusions of this study:the cation adsorption capacity of surface organic zeolite is relatived with the surface electrical properties of suface and if or not can form hydrogen bonds with the adsorption materials.And the adsorption of humic acid under acidic conditions is stronger. When organic zeolite is dropped into water,the HACC was swelled in water and became a fluffy mesh cover in the zeolite surface.This material can adsorpt a great kind of neutral and anionic substances in water.And it can settle automatically after adsorption.Settling velocity is around 10 cm/40 minutes. Because of its strong adsorption,wide adsorptional types,this purification material has a very broad application prospect. |
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