Amr A Yakout
University of Jeddah, Jeddah, Saudi Arabia
Title: Fast and effective removal of tetracycline and doxycycline from milk samples by β-cyclodextrin functionalized magnetic graphene oxide nanoparticles
Biography
Biography: Amr A Yakout
Abstract
Graphene oxide (GO) based magnetic nanocomposites have been currently used as an attractive adsorbent for removal of pharmaceutical wastes from water samples of different matrices. In the present study, β-cyclodextrin functionalized magnetic graphene oxide Fe3O4/GO/ β-CD magnetic nanoparticles (MNPs) were synthesized and successfully applied adsorbents for the removal of tetracycline (TC) and doxycycline (DC) from different milk samples. Fourier transform infrared spectrometry (FT-IR), transmission electron microscopy (TEM), Thermal gravitational analysis (TGA), vibrating sample magnetometer (VSM) and X-ray diffraction (XRD) were used to detect the surface morphology and characterize the nanocomposite. The effects of adsorbent dosage, pH, time and temperature were investigated on the adsorption properties of TC and DC onto Fe3O4/GO/ β-CD MNPs. The equilibrium adsorption data were analyzed using the Langmuir and Freundlich isotherms. The kinetics data for the adsorption of TC and DC onto Fe3O4/GO/β-CD MNPs were modeled using the pseudo-first-order, pseudo-second-order, Elovich and intra-particle diffusion linear kinetic equations. The nanocomposite showed good dispersibility and reusability after three adsorption-desorption cycles. The results showed the Fe3O4/GO/β-CD MNPs had a good adsorption ability to remove TC and DC from aqueous and milk samples.
