Third International Symposium On Environmental and Water Resources
Engineering
2-3 June 2015, Tehran, Iran
Decolorization of textile dyes mixture using
heterogeneous Fenton process by nanostructured
magnetite prepared with plasma
َAlireza Khataee*, Salimeh Gohari
* Research Laboratory of Advanced Water and Wastewater Treatment Processes,
Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
* a_khataee@tabrizu.ac.ir
Abstract
In this study, the degradation of mixture of three textile dyes (C.I. Basic Red 46 (BR46),
Malachite Green (MG) and C.I. Basic Blue 3 (BB3)) was examined simultaneously
through the heterogeneous Fenton process. The investigated catalyst was natural
magnetite nanostructures (NMNs) prepared by modification of the natural magnetite
microparticles by a novel glow discharge plasma (GDP) technology. A complete
characterization such as X-ray diffraction (XRD), Fourier transform infrared
spectroscopy (FT-IR), scanning electron microscopy (SEM) and Brunauer–Emmett–
Teller (BET) analyses were performed to explain the physical and chemical properties of
untreated- and GDP treated-magnetite particles. The multivariate curve resolution with
alternating least squares (MCR-ALS) modeling was successfully utilized for multivariate
calibration of the spectrophotometric data. In addition, by the use of this technique, the
spectra and the concentration profiles of each dye were attained during the degradation
process. A response surface methodology was utilized to investigate and model the
influence of several factors on multiple responses such as BB3 removal (Y1), BR46
removal (Y2) and MG removal (Y3) in the simultaneous removal of these dyes. The
results of the global desirability showed that 3.5 mg/L BR46, 3.5 mg/L MG, 3.5 mg/L
BB3, 3 mmol/L H2O2 and a 90 min-reaction time were the optimum conditions.
Key words: Fenton process; Glow discharge plasma; Magnetite nanostructures; Multi-response
optimization; Multivariate curve resolution.