Tetracycline Adsorption from Aqueous Media by Magnetically Separable Fe3O4@Methylcellulose/APTMS: Isotherm, Kinetic and Thermodynamic Studies

This study aimed to synthesize Fe3O4@Methylcellulose/3-Aminopropyltrimethoxysilane (Fe3O4@MC/APTMS) as a new magnetic nano-biocomposite by facile, fast, and microwave-assisted method be utilized an adsorbent for tetracycline (TC) removal from aqueous solutions. Fe3O4@MC/APTMS was characterized Fourier transform-infrared (FTIR), Field emission scanning electron microscopy (FESEM), Energy dispersive spectroscopy (EDS), Mapping, X-ray diffraction (XRD), Thermal gravimetric analysis (TGA), Brunauer–Emmett–Teller (BET) vibrating sample magnetometer (VSM). The point of zero charge (pHzpc) value the estimated 6.8 solid addition method. Optimum conditions were obtained in TC concentration: 10 mg L?1, dosage: 80 contact time: 90 min, solution pH 6 with maximum 90% 65.41% synthetic actual samples, respectively. kinetic isotherm equations pointed pseudo-second order Langmuir optimum fitting models. Based on values entropy changes (?S) (50.04 J/mol k), enthalpy (?H) (9.26 kJ/mol), negative Gibbs free energy (?G), adsorption process endothermic, random, spontaneous. synthesized exhibited outstanding properties, including proper efficiency TC, excellent reusability, simple separation media magnet. Consequently, it is highly desirable that could used promising