Study On Adsorption Behavior Of Anonic Dye On Cationic Cellulose

Cellulose which is rich in resources,is the natural polymer materials with high degree of polymerization,molecular orientation and chemical stability.Cellulose has many incomparable characteristics which the synthesis polymer can't match with,such as excellent biocompati-bility and biological degradation of drug-free sound.The nature characteristics of cellulose can be made use of in the dyeing wastewater treatment.This paper mainly study in the absorption capability of cationic fibre by two modes which are the study of adsorption and desorption when cationic fibre Immersion into aqueous solution containing dye(modeⅠ)and the study of adsorption and desorption when aqueous solution containing dye flows through the adsorption column(modeⅡ).In modeⅠ,the greater the initial concentration of dye solution,the greater the initial absorption rate constant,and the adsorption process accords with pseudo-second-order kinetics model,the greater the initial concentration of dye solution,the greater the initial absorption rate constant. In modeⅡ,the adsorption column with 5g cationic can effectively absorb aqueous solution containing dye under the condition of 150ml,initial concentration of aqueous solution containing dye 5 mg/L in 60 min,pH value of aqueous solution containing dye has great influence on absorption process,and when the pH value decreases,the absorption increase.Aqueous solution containing dye containing electrolytes such as sodium chloride, sodium sulfate has little effect on the absorption process.In the desorption process,the greater the concentration of sodium hydroxide,the better the analytical effect.But the number of reuse could be repeatedly decreased when the concentration of sodium hydroxide solution is too high(＞5%).The process of desorption can be finished within 10 min.