Abstract
ABSTRACTGraphite felt supported magnesium oxide (MgO/GF) catalyst was prepared by the equal volume impregnation method. Bisphenol A (BPA) was chosen as the target contaminant to be degraded by different ozone-based processes. The results of X-ray powder diffraction/scanning electron microscopy showed that MgO was uniformly loaded on graphite felt. The results showed that the removal percentages of BPA and COD by MgO/GF catalytic ozonation in 9 min could reach 88.2 and 42.1, respectively, but only 48.2 and 10.5 by O3 under the same conditions. The catalytic activity of the MgO/GF catalyst was relatively stable in 5 recycling tests. The mechanism study deduced that the high activity of MgO/GF in ozonation of BPA resulted from effective mitigation of pH change of the solution. The results show that MgO/GF is a potential catalyst in ozonation of refractory chemicals.
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