naa a22 4500 510752187 CHVBK 20180411083108.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11270-013-1583-4 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1583-4 Oxidative Degradation of EDTA in Aqueous Solution by the Bimetallic Fe-Cu [Elektronische Daten] [Xin Liu, Jin-Hong Fan, Lu-Ming Ma] Oxidative degradation of ethylenediaminetetraacetic acid (EDTA) in aqueous solution at normal temperature and pressure by the bimetallic Fe-Cu was investigated in this work. The results showed that the removal efficiency of EDTA, total organic carbon (TOC), and total nitrogen (TN) could be about 95, 62.5, and 39%, respectively, after 3-h reaction. The degradation of EDTA followed the pseudo-first-order reaction kinetics and would not be affected by the continuous use of bimetallic Fe-Cu. The degradation products were iminodiacetate, formate, and acetate determined by ion chromatogram. The effects of initial pH, initial concentration of EDTA, Cu content, Fe-Cu loading, and atmosphere were also investigated. Significantly, the bimetallic Fe-Cu process exhibited higher reactivity than ZEA process for the degradation of EDTA and it would not cause new heavy metal pollution in effluent. Reactive oxygen species (ROS) of OH was generated in situ. The evidence of oxidative degradation of EDTA was verified by electron spin resonance (ESR) spectroscopy and the product of para-hydroxybenzoic acid (p-HBA) by OH and benzoic acid (BA). Springer Science+Business Media Dordrecht, 2013 Advanced oxidation process nationallicence Bimetallic Fe-Cu nationallicence EDTA nationallicence ESR nationallicence Hydroxyl radical nationallicence Liu Xin National Engineering Research Center for Urban Pollution Control, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, 200092, Shanghai, China aut Fan Jin-Hong National Engineering Research Center for Urban Pollution Control, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, 200092, Shanghai, China aut Ma Lu-Ming National Engineering Research Center for Urban Pollution Control, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, 200092, Shanghai, China aut Water, Air, & Soil Pollution Springer Netherlands 224/5(2013-05-01), 1-11 0049-6979 224:5<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1583-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1583-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Xin National Engineering Research Center for Urban Pollution Control, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, 200092, Shanghai, China aut NATIONALLICENCE 700 1- Fan Jin-Hong National Engineering Research Center for Urban Pollution Control, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, 200092, Shanghai, China aut NATIONALLICENCE 700 1- Ma Lu-Ming National Engineering Research Center for Urban Pollution Control, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, 200092, Shanghai, China aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/5(2013-05-01), 1-11 0049-6979 224:5<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer