Bentonite Modified By Polymer And Its Adsorption Of Amino Black 10B

Bentointe has many advantages,such as high ion exchange capacity,low cost,abundant,and it plays an important role in water pollution treatment.In this article,acryloyloxyethyl trimethyl ammonium chloride(DAC)、 polyene propyl amine(PAA)、 dimethyl diallyl ammonium chloride(DMDAAC)were used to modified bentonite.Three kinds of efficiency of the adsorption of adsorption material were prepared.New adsorptions were characterized and analyzed in all directions by many analytical instrument(TGA、infrared spectrometer、 Rigaku Single Crystal XRD Diffractionmeter 、 scanning electron microscope).Three adsorbent were used in the adsorption of amido black 10 B and various factors(pH,time,initial concentration and temperature)on the properties of adsorption were studied to find the best adsorption conditions.In addition,the adsorption mechanism,equilibrium adsorption isotherm and adsorption kinetics were also discussed.The main research content results are as follows:(1)Polypropylene acyl oxcgen ethyl trimethyl ammouium chloride bentonite(Bent-PDAC)was prepared and polypropylene acyl oxcgen ethyl trimethyl ammouium chloride was the modifier.Characterization results show that the obtained products have higher stability,larger interlamellar spacing.Adsorption results show that the pH = 3,T = 35℃,t = 240 min,initial concentration of 500 mg/L are the best adsorption conditions,and the adsorption capacity can reach up to 399.47 mg/g.The adsorption process conforms to the pseudo-second-order kinetics model and the Langmuir isotherm.(2)Intercalate organic polymer into bentonite directly and allylamine polymer bentonite can be prepared.This method is more simple and the production cost is lower.The best adsorption conditions for adsorption experiments: pH = 2,temperature = 45 ℃,the concentration of 200 mg/L,t = 120 min.The adsorption process conforms to the pseudo-second-order kinetics model and the Langmuir isotherm.(3)The method of atom transfer radical polymerization was adopted to prepare the poly dimethyl diallyl ammonium chloride/bentonite.The modifier was poly dimethyl diallyl ammonium chloride.Adsorption experiment results show that the optimum adsorption conditions for: pH = 2,T = 35 ℃,t = 120 min,initial concentration of 250 mg/L.The adsorption process conforms to the pseudo-second-order kinetics model and the Langmuir isotherm.