An efficient and new magnetic nanoadsorbent DDMAB coated MnFe2O4 nanoparticles were fabricated by co-precipitation technique. These nanoparticles were characterized using SEM, TEM, XRD, FT-IR and VSM. XRD and FT-IR confirmed the functionalization of the MnFe2O4 nanoparticles with the zwitterionic surfactant DDMAB. In this investigation, magnetic nanoadsorbent has been employed for the removal of Cr (VI) ions from aqueous solutions by a batch adsorption technique. In batch optimization studies, the maximum removal efficiency of 80% was obtained at optimal levels of pH 5, contact time 150 min, adsorbent dosage 2.5 mg/L and initial metal ion concentration 10 ppm. The equilibrium sorption data were fitted into Langmuir, Freundlich and Temkin isotherms. Of the three adsorption isotherms, the R2 value of Langmuir isotherm model was the highest. The maximum monolayer coverage (Qmax) from Langmuir isotherm model was determined to be 75.76 mg/g. The adsorption of Cr(VI) by DDMAB coated MNPs follows the pseudo-second order kinetic model. The results of this study showed that the DDMAB coated MNPs were found to be cost effective and easily separable nanoadsorbent for efficient removal of Cr (VI). 

Adsorptive removal of Cr(VI) by zwitterionic surfactant coated manganese ferrite (MnFe<sub>2</sub>O<sub>4</sub>) nanoparticle: Equilibrium and kinetic study

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.

Adsorptive removal of Cr(VI) by zwitterionic surfactant coated manganese ferrite (MnFe2O4) nanoparticle: Equilibrium and kinetic study

Adsorptive removal of Cr(VI) by zwitterionic surfactant coated manganese ferrite (MnFe₂O₄) nanoparticle: Equilibrium and kinetic study