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3870426 
Journal Article 
Degradation of organic pollutants in near -neutral pH solution by Fe-C micro-electrolysis system 
Yang, Z; Ma, Y; Liu, Y; Li, Q; Zhou, Z; Ren, Z 
2017 
Yes 
Chemical Engineering Journal
ISSN: 1385-8947 
315 
403-414 
English 
WOS:000395212300041 
The degradation of organic pollutants in the simulated and realistic wastewaters was investigated by Fe C micro-electrolysis system. Effects of initial pH, Fe/C mass ratio, gas bubbling type (air or N-2) and the type of anions on degradation and mineralization of Sunset Yellow (SY) were studied. The degradation and mineralization efficiencies of 500 mg L-1 SY were approximately 99.0% and 77.5% after 90 min treatment, when the initial pH, Fe/C ratio and air bubbling flow rate were 6.0, 1:1 and 45 Lh(-1), respectively. Besides, the type of anions had a significant influence on the Fe-C micro-electrolysis process. The results of kinetics study indicated that Fe-C micro-electrolysis process followed second-order-kinetics well. The degradation pathway and mechanism for SY were proposed based on FTIR and LC-MS analyses of treated wastewater. Additionally, the Fe-C micro-electrolysis process could dispose linear alkyl chain and benzene ring compounds efficiently under the optimal conditions, and the mineralization efficiencies Were in the range of 94-96% and approximately 80%, respectively. The degradation feasibility of a realistic wastewater by the Fe-C micro-electrolysis system was investigated with landfill leachate. In conclusion, Fe-C micro-electrolysis system is an effective and promising technology for organic wastewater treatment in near-neutral pH condition. (C) 2017 Elsevier B.V. All rights reserved. 
Fe-C micro-electrolysis; Degradation pathway; Organic pollutants; Near-neutral pH; Mechanism