Novel superparamagnetic chitosan-coated magnetite nanoparticles were successfully synthesized and applied as an effective sorbent for the removal of phenolic compounds (phenol, 2-chlorophenol, and 4- chlorophenol) from aqueous solutions. The characterization of synthesized magnetic chitosan nanoparticles was performed by X-ray diffraction,  fourier transform infrared spectroscopy, transmission electronmicroscopy, dynamic light scattering, and vibrating sample magnetometry analyses. The binding capacity of the biosorbent was investigated as a function of initial pH, contact time, initial concentration of adsorbate, and dosage of adsorbent. Adsorption kinetic and isotherm studies, respectively, showed that the adsorption process followed a pseudo-first-order kinetic model and the Freundlichisotherm. The maximum adsorption capacity of phenol, 2-chlorophenol, and 4- chlorophenol on to the chitosan-coated magnetite nanoparticles was found to be 39.5, 67.4, and 83.6 mg g-1, respectively.

Biosorption of phenolic compounds from aqueous solutions onto magnetic chitosan nanoparticles

248th National Meeting (2014)

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