Turkish Journal of Chemistry
DOI
-
Abstract
A laboratory setup was used to examine the uptake of chromate and arsenate from aqueous solutions by octadecylammonium acetate [ODA]-modified inland clinoptilolite. In trials, a natural variety of montmorillonite was compared to organic, i.e. surfactant loaded clinoptilolite. and some inorganically substituted (Ag, Pb) monoforms. The arrangement of the surface-attached ODA chains was the important factor for differences in the adsorption states of the guest species (oxyanions). A novel nano-structure inorganic-organic composite was prepared and was characterized by SEM, thermogravimetry, HR TEM, UV-VIS diffuse reflectance and powder XRD spectral analytical methods. Finally, the adsorption isotherms of the studied system were expressed. An approach was proposed for the regeneration of exhausted surfactant-immobilized clinoptilolite with inorganic salt solutions under a dynamic regime.
Keywords
Octadecylammonium-clinoptilolite, adsorption, anion-exchange, chromate and arsenate oxyanions, montmorillonite
First Page
639
Last Page
648
Recommended Citation
CHMIELEWSKA, EVA (2003) "Adsorption of Arsenate and Chromate from Waters on Hydrophobized Zeolitic Media," Turkish Journal of Chemistry: Vol. 27: No. 5, Article 12. Available at: https://journals.tubitak.gov.tr/chem/vol27/iss5/12
