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Int. J. Environ. Res. Public Health 2017, 14(7), 819; doi:10.3390/ijerph14070819

Electrochemical Oxidation of EDTA in Nuclear Wastewater Using Platinum Supported on Activated Carbon Fibers

1,2
,
1,3,* , 4
,
4
and
1,3
1
Key Subject Laboratory of National Defense for Radioactive Waste and Environmental Security, Southwest University of Science and Technology, Mianyang 621010, China
2
School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
3
Sichuan Civil-Military Integration Institute, Mianyang 621010, China
4
China Academy of Engineering Physics, Mianyang 621000, China
*
Author to whom correspondence should be addressed.
Received: 15 June 2017 / Revised: 12 July 2017 / Accepted: 18 July 2017 / Published: 21 July 2017
(This article belongs to the Section Environmental Engineering and Public Health)
View Full-Text   |   Download PDF [2443 KB, uploaded 21 July 2017]   |  

Abstract

A novel Pt/ACF (Pt supported on activated carbon fibers) electrode was successfully prepared with impregnation and electrodeposition method. Characterization of the electrodes indicated that the Pt/ACF electrode had a larger effective area and more active sites. Electrochemical degradation of ethylenediaminetetra-acetic acid (EDTA) in aqueous solution with Pt/ACF electrodes was investigated. The results showed that the 3% Pt/ACF electrode had a better effect on EDTA removal. The operational parameters influencing the electrochemical degradation of EDTA with 3% Pt/ACF electrode were optimized and the optimal removal of EDTA and chemical oxygen demand (COD) were 94% and 60% after 100 min on condition of the electrolyte concentration, initial concentration of EDTA, current density and initial value of pH were 0.1 mol/L, 300 mg/L, 40 mA/cm2 and 5.0, respectively. The degradation intermediates of EDTA in electrochemical oxidation with 3% Pt/ACF electrode were identified by gas chromatography-mass spectrum (GC-MS). View Full-Text
Keywords: ethylenediaminetetra-acetic acid; electrochemical oxidation; Pt/ACF electrode; degradation intermediates ethylenediaminetetra-acetic acid; electrochemical oxidation; Pt/ACF electrode; degradation intermediates
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Zhao, B.; Zhu, W.; Mu, T.; Hu, Z.; Duan, T. Electrochemical Oxidation of EDTA in Nuclear Wastewater Using Platinum Supported on Activated Carbon Fibers. Int. J. Environ. Res. Public Health 2017, 14, 819.

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