Comparative study on degradation of p-nitrophenol in aqueous solution by mFe/Cu/O-3 and mFe(0)/O-3 processes

The performance of mFe/Cu/O-3 and mFe(0)/O-3 processes was comparatively investigated through optimized the key operational parameters for degradation of p-nitrophenol (PNP). The COD removal attained by mFe/Cu/O-3 process was higher than that of mFe(0)/O-3 process under the corresponding conditions. Additionally, under the optimal conditions, the COD removal (93.6%) obtained by mte/Cu/O-3 process was more than twice of the sum (44.6%) of that by ozone (35.3%) and mFe/Cu alone (9.3%). Finally, the key active materials in mFe/Cu/O-3 system, degradation pathway of PNP and reaction mechanism of mre/Cu/O-3 process were proposed according to the analysis results of intermediate products, SEM-EDS and XRD. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.