Adsorption of Arsenate and Chromate from Waters on Hydrophobized Zeolitic Media

Authors : Eva CHMIELEWSKÁ

Pages : 639-648

View : 16 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

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 insert ignore into journalissuearticles values(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 insert ignore into journalissuearticles values(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