Abstract:

The equilibrium uptakes of taurine on anion exchange resins(20 1×7 and D290)were determined by means of the static method.Th e effect of pH value of the solution on the uptake was also investigated.Then,the ion-exchange mec.hanism of taurine on the anion exchange resins was explained.The results show that the pH value of the solution greatly influences the equilibrium uptake of taurine,and that the equilibrium uptake of taurine,which increases with the pH value and reaches the maximum at pH 8 to 9,is very low in acidic solution.The ion-exchange isotherm s of taurine on the anion exchange resins indicate that,with the increase of taurine concentration of the solution.the uptake of taurine gradually increases at a low rate,and that the uptake of taurine on the 20 1×7 anion exchange resin is larger than that on the D290 anion exchange resin.

Key words: taurine, pH value, anion exchange resin, exchange capacity, exchange equilibrium