Multifunctional Chitosan/Xylan-Coated Magnetite Nanoparticles for the Simultaneous Adsorption of the Emerging Contaminants Pb(II), Salicylic Acid, and Congo Red Dye

In this work, we develop chitosan/xylan-coated magnetite (CsXM) nanoparticles as eco-friendly efficient adsorbents for the facile removal of contaminants from water. Characterization CsXM using Fourier Transform Infra-Red (FTIR) Spectroscopy, Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), Thermogravimetric Analysis (TGA), Transmission (TEM), Zeta potential measurements, and Brunauer-Emmet-Teller (BET) analysis, confirmed successful preparation a chitosan/xylan complex coated over magnetite, which is characterized by being mesoporous, thermally stable neutral charge. Three contaminants, Pb(II), salicylic acid (SA), congo red (CR), were chosen representative pollutants three major classes emerging concern: heavy metals, pharmaceuticals, azo dyes. SA, CR at initial concentrations 50 ppm removed 64.49, 62.90, 70.35%, respectively, on applying 6 g/L CsXM. The successfully in ternary systems, with Pb (II) SA more competitive their adsorption than CR. Adsorption followed Freundlich isotherm model pseudo-second order kinetic model, while binding was suggested to occur mainly via chemical chelation Pb(II) physical interaction CR, demonstrates multifunctional capture different regardless