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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
environmental science
Basic dye removal from aqueous solutions by dodecylsulfate- and dodecyl benzene sulfonate-intercalated hydrotalcite
Journal of Hazardous Materials, Volume 153, No. 3, Year 2008
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Description
Dodecylsulfate- and dodecyl benzene sulfonate-hydrotalcites were prepared by calcination-rehydratation method. The surfactants intercalation in the interlayer space of hydrotalcite were checked by PXRD and FTIR spectroscopy where the resulting materials were found to be similar to those reported in the literature and were used to remove a basic dye (safranine) from aqueous solutions. The sorption kinetics data fitted the pseudo second order model. The isotherms were established and the parameters calculated. The sorption data fitted the Langmuir model with good values of the determination coefficient. The thermodynamic parameters calculated from Van't Hoff plots gave a low value of ΔG° (<-20 kJ mol-1) indicating a spontaneous physisorption process. Two regeneration cycles were processed by acetone extraction leading to the same removal capacity of the obtained materials as the original surfactant-intercalated hydrotalcites. The UV-vis spectra of the recovered extracts were similar to the spectrum of safranine, which means that the dye was recovered without any modification. © 2007 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Bouraada, Mohamed
Algeria, Mostaganem
Université Abdelhamid Ibn Badis Mostaganem
Lafjah, Mama
Algeria, Mostaganem
Université Abdelhamid Ibn Badis Mostaganem
Ouali, Mohand Saïd
Algeria, Mostaganem
Université Abdelhamid Ibn Badis Mostaganem
de Mènorval, Louis Charles
France, Montpellier
Institut Charles Gerhardt Montpellier
Statistics
Citations: 119
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1016/j.jhazmat.2007.09.076
ISSN:
03043894