Mechanism of enhanced diclofenac mineralization by catalytic ozonation over iron silicate-loaded pumice
作者： Guoying Gao , Jimin Shen , Wei Chu , Zhonglin Chen , Lei Yuan
DOI: 10.1016/J.SEPPUR.2016.09.016
关键词:
摘要: The mechanism of enhanced diclofenac (DCF) mineralization by catalytic ozonation over iron silicate-loaded pumice (FSO/PMC) was investigated. results showed that FSO/PMC process significantly improved the DCF from 32.3% (sole-ozonation) to 73.3%. adsorptive and properties effectively oxidative capability ozone led an excellent mineralization. This is likely due presence can improve mass transfer aqueous ozone, increase solubility accelerate generation OH radicals as verified in this study. adsorption on low (7.3%), however, could be rapidly decomposed into various intermediates, which have much higher surface than DCF. another critical finding justify faster TOC removal, because accumulation (i.e. adsorption) intermediates increases their contact probability with derived decomposition. decomposition catalyst further a benign cycling succeeding gas transfer, H2O2 generation, adsorption/decomposition intermediates.
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