Abstract
The adsorption of Astrazon Red (C.I. Basic Red 46) in aqueous solution by a bentonite clay from Benavila, Portugal, was studied. The bentonite sample was mainly composed of montmorillonite, Na-Feldspar and calcite (XRD analysis). The texture characteristics were determined by Hg and He porosimetry and the specific surface area by the methylene blue adsorption method. A kinetic experiment was carried out at 15 °C to determine the time required to reach equilibrium. Experimental data were well described by the pseudo-second order kinetic model. Adsorption equilibrium isotherms were determined at different temperatures and the results fitted to Langmuir and Freundlich models. According to Langmuir model, the adsorption capacities were 141.0, 148.7 and 157.8 mg/g at 15, 25 and 35 °C, respectively.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
REFERENCES
K. Kadirvelu, C. Karthika, N. Vennilamani, and S. Pattabhi, Activated carbon from industrial solid waste as an adsorbent for the removal of Rhodamine-B from aqueous solution: Kinetic and equilibrium studies, Chemosphere 60, 1009–1017 (2005).
T. Robinson, B. Chandran, and P. Nigam, Removal of dyes from an artificial textile dye effluent by two agricultural waste residues, corncob and barley husk, Environ. Int. 28, 29–33 (2002).
S.A. Figueiredo, R.A. Boaventura, and J.M. Loureiro, Color removal with natural adsorbents: modelling, simulation and experimental, Sep. Purif. Technol. 20, 129–141 (2000).
Z. Aksu and S. Tezer, Biosorption of reactive dyes on the green alga Chlorella vulgaris, Process Biochem. 40, 1347–1361 (2005).
B. Acemioğlu, Adsorption of Congo red from aqueous solution onto calcium-rich fly ash, J. Colloid Interface Sci. 274, 371–379 (2004).
S. Netpradit, P. Thiravetyan, and S. Towprayoon, Adsorption of three azo reactive dyes by metal hydroxide sludge: effect of temperature, pH, and electrolytes, J. Colloid Interface Sci. 270, 255–261 (2004).
M. J. Martin, A. Artola, M. D. Balaguer, and M. Rigola, Activated carbons developed from surplus sewage sludge for the removal of dyes from dilute aqueous solutions, Chem. Eng. J. 94, 231–239 (2003).
A. S. Özcan, and A. Özcan, Adsorption of acid dyes from aqueous solutions onto acidactivated bentonite, J. Colloid Interface Sci. 276, 39–46 (2004).
R. Wibulswas, Bach and fixed bed sorption of methylene blue on precursor and QUACs modified montmorillonite, Sep. Purif. Technol. 39, 3–12 (2004).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2006 Springer
About this paper
Cite this paper
SANTOS, S.C., BOAVENTURA, R.A., OLIVEIRA, Á.F. (2006). PRELIMINARY STUDY ON THE ADSORPTION OF THE CATIONIC DYE ASTRAZON RED BY A PORTUGUESE BENTONITE. In: Loureiro, J.M., Kartel, M.T. (eds) Combined and Hybrid Adsorbents. NATO Security through Science Series. Springer, Dordrecht . https://doi.org/10.1007/1-4020-5172-7_13
Download citation
DOI: https://doi.org/10.1007/1-4020-5172-7_13
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-5170-8
Online ISBN: 978-1-4020-5172-2
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)