Calcium Alginate Beads with Entrapped Iron Oxide Magnetic Nanoparticles Functionalized with Methionine-A Versatile Adsorbent for Arsenic Removal.

摘要: A novel beads adsorbent, consisting of calcium alginate entrapped on magnetic nanoparticles functionalized with methionine (MFMNABs), was developed for effective elimination arsenic from water. The material characterized by FT-IR (Fourier Transform Infrared Spectroscopy), SEM (Scanning Electron Microscopic), XRD (X-ray Diffraction) and TEM (Transmission Microscopy). removal capacity the studied altering variables such as pH solution, contact time, adsorbent dose adsorbate concentration. maximal As(III) 99.56% under optimal conditions an equilibrium time 110 min 7.0-7.5. adsorption followed a second order kinetics data best fitted Langmuir isotherm correlation coefficient R2 = 0.9890 (qm) 6.6533 mg/g. thermodynamic study showed entropy change (∆S) enthalpy (∆H) to be 34.32 J mol-1 K 5.25 kJ mol-1, respectively. This proved that it feasible treat solution MFMNABs. synthesized cost-effective, environmentally friendly versatile, compared other adsorbents. carried low cost spectrophotometric method using N- bromosuccinimide rhodamine-B in our laboratory.