Abstract

Chemically modified cotton has been prepared by the functionalization reaction with succinic anhydride and have been used to eliminate two dyes, basic yellow XGL 250% and the dispersed marine 5RN, by adsorption. The tests showed that the efficiency of extraction was 100% for yellow basic dye and 70% for the marine dispersed dye. The equilibrium time was found to be 60 min for 100 mg/L dye initial concentrations for an adsorbent dose of 0.01 mg/L. The models of adsorption of Langmuir and Generalized fits well the adsorption of the dyes on the support. The obtained results suggest that chemically modified cotton could be of valuable interest for the removal of different dyes from industrial textile waste water.

Key words: Adsorption, cellulose, cotton, dyes removal, isotherm, grafting, scanning electron microscopy.