Description of the Adsorption and Desorption of Black 5 onto Chitin and Chitosan - Isotherm Equations

作者：Filipkowska Urszula^*

来源：Fibres & Textiles in Eastern Europe, 2010, 18(5): 105-109.

• adsorption
• chitin
• chitosan
• reactive dye Black 5
• isotherm equations

The sorption and desorption of a reactive dye - Black 5, commonly used in the textile industry, from aqueous solutions onto chitin and chitosan was studied. Following the adsorption of the dye at pH 3, its desorption was carried out at pH 11. Equilibrium isotherms were analysed using the following isotherms: the Freundlich, the Langmuir, the two-site Langmuir and the three-parameter Redlich-Peterson. All four isotherm equations showed a good fit to experimental data. The best-fitting isotherm was the two-site Langmuir, i.e. the heterogeneous model.

• 出版日期2010-12