Title
Removal of heavy metals Cd (II), Cu (II) and Zn (II) biosorption process by using the macrophyte Eicchornia crassipes
Other title
[Remoção dos metais pesados Cd(II), Cu(II) e Zn(II) pelo processo de biossorção utilizando a macrófita Eicchornia crassipes]
Date Issued
01 July 2013
Access level
open access
Resource Type
journal article
Author(s)
Módenes A.
Lavarda F.
Colombo A.
Borba C.
Leichtweis W.
Díaz Mora N.
Abstract
The adsorption capacity of Eicchornia crassipes for removing Cd(II), Cu(II) and Zn(II) ions from aqueous solutions has been investigated in a batch system. Experimental data of the kinetics and equilibrium of biosorption for the single-component systems was obtained. Equilibrium times of 45, 60 and 120 min. for Cd(II), Cu(II) and Zn(II) ions, respectively, were achieved. Kinetic data was better fitted to the pseudo-second order kinetic model. To describe biossorption equilibrium were used Langmuir, Freundlich and Temkim isotherms. The Langmuir isotherm model was better fitted to the equilibrium data, with values of 0.667, 0.615 and 0.633 mequiv.g-1 for Cd(II), Cu(II) and Zn(II) adsorption capacity, respectively. E. crassipes biomass has great potential to be used in wastewater treatment systems.
Start page
355
End page
362
Volume
66
Issue
3
Language
English
OCDE Knowledge area
Biología marina, Biología de agua dulce, Limnología
Ingeniería ambiental y geológica
Subjects
Scopus EID
2-s2.0-84881494169
Source
Revista Escola de Minas
ISSN of the container
03704467
Sources of information:
Directorio de Producción Científica
Scopus