Title:Synthesis of Iron Oxide Micro and Nanoparticles from Aluminum Industry Waste and Its Application in the Decolorization of Reactive Blue 235 Dye
Volume: 17
Issue: 10
Author(s): Elavarasi Natarajan and Gomathi P. Ponnaiah
Affiliation:
Keywords:
Red mud, iron oxide particles, SEM, fenton like catalyst, reactive blue 235, decolorization.
Abstract: Iron oxide micro and nanoparticles were successfully synthesized from Red Mud (RM) using a simple twostep
process. RM was characterized using various techniques such as X-Ray Diffractometer (XRD), Fourier Transform-
Infra Red (FTIR) spectroscopy, Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX) analysis and Carbon
Hydrogen Nitrogen (CHN) microanalysis. Red mud derived iron oxide micro and nanoparticles (RIMNP) were characterized
using techniques such as XRD, FTIR, SEM/EDX, Transmission Electron Microscopy (TEM) and Vibrating
Sample Magnetometry (VSM). RIMNP were employed as a Fenton like catalyst for the decolorization of a commonly
used textile dye Reactive Blue 235 (RB235) from aqueous solution. The dynamical data obtained at different concentrations
of RIMNP fit well with pseudo-second-order kinetic model and 100% dye removal efficiency was obtained at 200
mg L-1 concentration of RIMNP.
