Preparation and Characterization of Graphene Oxide – Attapulgite composite and its use in kinetic study of Alizarin Dye Adsorption from Aqueous Media

Abbas, Ahmed; Merza, Sundus

doi:10.21608/ejchem.2019.15600.1946

Preparation and Characterization of Graphene Oxide – Attapulgite composite and its use in kinetic study of Alizarin Dye Adsorption from Aqueous Media

Document Type : Original Article

Authors

Ahmed Abbas ¹
Sundus Merza ²

¹ chemistry ,collage of education for pure science (ibn al haithem), University of Baghdad

² chemistry,collage of education for pure science (ibn al-haithem)university of baghdad ,baghdad,Iraq

10.21608/ejchem.2019.15600.1946

Abstract

Attapulgite clay was modified in this study by the graphene oxide sheets and the clay was diagnosed before and after modification using several techniques (Fourier-transform infrared spectroscopy FT-IR, X-ray powder diffraction XRD, Scanning electron microscope SEM , energy dispersive spectroscopy EDX ) ,The surface of the attapulgite clay (before (Ata) after modification by graphene oxide (Ata-GO) ) was applied to adsorption of the Alizarin dye from its water solutions through the application of several kinetic models (pseudo first-order model , pseudo second -order model , intraparticle diffusion model ),It was found that the practical results follow pseudo second -order model. The process of modification on the surface of the mud has improved the adsorption properties where the quantity dye adsorbed is equal to ( 55 , 81 ) mg/g by the surfaces (Ata ,Ata-GO) respectively.

Keywords

Main Subjects