Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
154278 | Chemical Engineering Journal | 2006 | 7 Pages |
Abstract
Crosslinked amphoteric starch with carboxymethyl and quaternary ammonium groups is investigated as an adsorbent for removal of both acid and basic dyes in solution. Acid Light Yellow 2G, Acid Red G, Methyl Green and Methyl Violet were used to study the adsorption behaviors under various parameters such as pH, dose of amphoteric starches, initial dye concentration, adsorption time and adsorption temperature. At the preset pH value, the relationship between adsorption amount and the initial dye concentrations is given. The adsorption isotherm is discussed by modeling Langmuir and Freundlich isotherm. The kinetic study shows that the pseudo-second-order model fits the experimental data better. Also, the thermodynamic parameters are shown.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Shimei Xu, Jingli Wang, Ronglan Wu, Jide Wang, Hong Li,