Química Nova | |
Adsorção de íons cobre(II) pela quitosana usando coluna em sistema sob fluxo hidrodinâmico | |
Luciana Simionatto Guinesi1  Amanda Alves Esteves1  Éder Tadeu Gomes Cavalheiro1  | |
[1] ,Universidade de São Paulo Instituto de Química de São Carlos | |
关键词: chitosan; copper; adsorption; | |
DOI : 10.1590/S0100-40422007000400010 | |
来源: SciELO | |
【 摘 要 】
The adsorption of Cu(II) ions from aqueous solution by chitosan using a column in a closed hydrodynamic flow system is described. The adsorption capacities as a function of contact time of copper(II) ions and chitosan were determined by varying the ionic strength, temperature and the flow of the metal solution. The Langmuir model reproduced the adsorption isothermal data better than the Freundlich model. The experimental kinetic data correlate properly with the second-order kinetic reaction for the whole set of experimental adsorption conditions. The rate constants exercise great influence on the time taken for equilibrium to be established by complexation or electrostatic interaction between the amino groups of chitosan and the metal.
【 授权许可】
CC BY-NC
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO202005130062086ZK.pdf | 133KB | download |