Removal of Cr(VI) from Aqueous Environments Using Micelle-Clay Adsorption
Date
2013-09-03
Authors
Qurie, Mohannad
Khamis, Mustafa
Manassra, Adnan
Ayyad, Ibrahim
Karaman, Rafik
Journal Title
Journal ISSN
Volume Title
Publisher
Hindawi Publishing Corporation
Abstract
Removal of Cr(VI) from aqueous solutions under different conditions was investigated using either clay (montmorillonite) or
micelle-clay complex, the last obtained by adsorbing critical micelle concentration of octadecyltrimethylammonium ions onto
montmorillonite. Batch experiments showed the effects of contact time, adsorbent dosage, and pH on the removal efficiency of
Cr(VI) from aqueous solutions. Langmuir adsorption isotherm fitted the experimental data giving significant results. Filtration
experiments using columns filled with micelle-clay complex mixed with sand were performed to assess Cr(VI) removal efficiency
under continuous flow at different pH values. The micelle-clay complex used in this study was capable of removing Cr(VI) from
aqueous solutions without any prior acidification of the sample. Results demonstrated that the removal effectiveness reached nearly 100% when using optimal conditions for both batch and continuous flow techniques.