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Abstract
A novel adsorbent, amino-alky cellulose (AmAC), is prepared by chlorination and amination of hydroxyethyl cellulose (HEC). AmAC are characterized by 13C-NMR and used as adsorbent to remove 2, 4, 6-trinitrotoluene (TNT) from waste water. Effects of various parameters including solvent and amine group content are studied. Adsorption mechanisms are also analyzed. Results show that the maximum adsorption capacity is 69.23 mg g−1 and removal efficiency of 99.30%, while the adsorption deeds are attributed to the hydrogen bond between TNT molecules and amino-alky cellulose. The equilibrium sorption is well demonstrated by Freundlich isotherm model. The reusability experiment shows the adsorbed TNT could be desorbed by ethanol eluant when the pH is 1.