Study on the Adsorption of Livestock Wastewater by Bentonite Coated Chitosan

The bentonite coated chitosan which was prepared of natural bentonite used as raw material and chitosan used as modifying agent applied in the treatment of livestock wastewater. The optimal preparation conditions were obtained and the removal rate of the ammonia nitrogen and COD were 73.09% and 88.94% respectively which raw concentration were 27520mg1L and 2060mg/L by orthogonal experiment. Langmuir isothermal adsorption model and the pseudo-second-order kinetic equation could describe the adsorption process accurately.