Preparation and Properties of Modified Cationic Polymer Flocculant CS-g-ADM
Flocculant is one of the most widely used methods in water treatment,but the traditional flocculant has some problems,such as poor flocculation effect,large amount of addition,difficult to be reused and easy to cause sec-ondary pollution.In order to improve the above shortcomings,a new green polymer flocculant CS-g-ADM was pre-pared by grafting acrylamide and dimethyldiallyl ammonium chloride onto chitosan.The synthesis conditions were studied by single factor experiment and orthogonal experiment.A series of characterization methods including SEM,FTIR and UV-Vis were used to explore the morphology of the surface and component.The results show that the synthesized flocculant is a loose porous network structure,which makes the flocculation effect better than the tradi-tional flocculant.The removal rate of anion azo dyes such as amaranth red,corundum red and acid orange G can reach more than 98％under the condition of short time and less addition amount.Regeneration experiments show that the flocculant still has a good removal effect after two cycles.It greatly improves the shortcomings of traditional polymer flocculants,which is a kind of fine performance and green environmental protection flocculant material.
NETL
NSTL
万方数据
