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RESEARCH ARTICLE  [Accepted]
The rapid Fenton-like degradation of methyl orange by ultrasonically dispersed nano-metallic particles
Jiwan Singh1, Yoon-Young Chang2, Janardhan Reddy Koduru3, Jae-Kyu Yang4, and D. P. Singh1
1Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow-226025, India
2Department of Environmental Engineering, Kwangwoon University, Seoul 01897, Republic of Korea
3Graduate School of Environmental Studies, Kwangwoon University, Seoul 01897, Republic of Korea
4Ingenium College of Liberal Arts, Kwangwoon University, Seoul 01897, Republic of Korea
Corresponding Author: Jiwan Singh ,Tel: +91-7376157206, Email: jiwansingh95@gmail.com
Received: November 11, 2016;  Accepted: February 10, 2017.
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ABSTRACT
This study investigates methyl orange (MO) degradation by an ultrasonically dispersed nano-metallic particle (NMP) assisted advanced Fenton process. The NMPs were synthesized from the leachate of automobile-shredder residue. X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy were performed for the prepared NMPs. Various parameters, such as the effects of the NMP dosage, the pH value of the solution, the initial concentration of MO, and the amount of H2O2 on the degradation efficiency of MO. were studied. The MO degradation efficiency could be increased by approximately 100% by increasing the dosages of the NMPs and H2O2 to certain limits, after which in both cases the degradation efficiency was reduced when an excess amount was added. The MO degradation efficiency was found to be 100% at pH 2.0 and 2.5 with the 10 mg/L of initial concentration of the MO. The degradation of MO by ultrasonically dispersed NMPs was appropriate with the pseudo-first-order kinetics.
Keywords: Degradation | Kinetic study | Mechanism | Methyl orange | Nano-metallic particles | Ultrasound
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