Apply modified cotton by m-DMDHEU and choline cloride to separate ion CrO42- , H2AsO4- in water solution

Abstract

In this article, cotton is modified by m-DMDHEU and choline chloride. The modified cotton can adsorb and ion exchange ion ,  in water solution as effectively as anionit resin. The material are activated by soaking in 24 h with mixed m-DMDHEU and choline chloride, then dried and activated in 1 h at 140 ^oC, all residual reactants was removed by water. Adsorption and ion exchange process were studied with a model solution contained ion , in different conditions. Results showed that the modified cotton is able to adsorb ion  and of the model, solution is nearly completely, respectively 99,95 % and 99,60 %; the values of  anionit resin is respectively 97,99 %  and  97,60 % at pH=7,0.