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Aromatic amines equilibrium sorptive interaction with synthesized silica based mesoporous MCM-41: Physicochemical evaluation and isotherm modeling
- Toor, Sehaspreet Kaur, Kushwaha, Jai Prakash, Sangal, Vikas Kumar
- Journal of environmental science and health 2019 v.54 no.4 pp. 286-294
- Fourier transform infrared spectroscopy, X-ray diffraction, adsorption, aromatic amines, kinetics, models, nanoparticles, pH, porous media, scanning electron microscopy, silica, sorption isotherms, surface area, temperature, transmission electron microscopy
- Present study reports the adsorption of aromatic amine, 4-chloro-o-toluidine (4-COT), onto synthesized mesoporous Mobil Composition of Matter No. 41 (MCM-41) silica nanoparticles, in batch mode. Synthesized MCM-41 was characterized by XRD, BET, FTIR, SEM and TEM analysis. The effects of pH, MCM-41 dose, 4-COT concentration, contact time and temperature were studied, and interaction of 4-COT with the surface of MCM-41 and adsorption process controlling mechanism were investigated. BET analysis of MCM-41 showed 502.77 m² g–¹ of surface area. Kinetic experimental data were well represented by the pseudo-second order kinetic model. Freundlich and Temkin isotherm models well represented the adsorption equilibrium isotherm data.