Chitosan-n-2-hydroxypropyl trimethyl ammonium chloride as adsorbent for the removal of the reactive dye from aqueous solutions

Química Nova

Universidade Federal de Santa Catarina, Florianópolis, Brasil¹  Universidade Tecnológica Federal do Paraná, Curitiba, Brasil¹  Rosa, Sirlei da¹  Riella, Humberto G.¹  Fávere, Valfredo T.¹ 

关键词: reactive dye;    quaternary chitosan;    adsorption.;   

DOI  :  10.1590/S0100-40422010000700010

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The quaternary chitosan was synthesized by reaction of chitosan with glycidyl trimethylammonium chloride. it was characterized by infrared spectra and conductometric titration. Adsorption of reactive blue 4 (RB4) and reactive red 120 (RR120) by quaternary chitosan was studied from aqueous medium. Two kinetic adsorption models were tested: pseudo first-order and pseudo second-order. The experimental data best fitted the pseudo second-order model. The Langmuir isotherm model provided the best fit to the equilibrium data in the concentration range investigated and the maximum adsorption capacity determined was 415 mg (RR120) and 637 mg (RB4) of reactive dye per gram of adsorbent.

【 授权许可】

Unknown