ABSTRACT Graphite 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.

中文翻译：

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石墨毡负载氧化镁催化双酚A臭氧化

摘要 采用等体积浸渍法制备了石墨毡负载氧化镁（MgO/GF）催化剂。选择双酚 A (BPA) 作为目标污染物，通过不同的基于臭氧的过程进行降解。X 射线粉末衍射/扫描电子显微镜的结果表明，MgO 均匀地负载在石墨毡上。结果表明，MgO/GF 催化臭氧化 9 min 对 BPA 和 COD 的去除率分别达到 88.2 和 42.1，但在相同条件下，O3 的去除率仅为 48.2 和 10.5。MgO/GF催化剂的催化活性在5次循环试验中相对稳定。机理研究推断，MgO/GF 在 BPA 臭氧化中的高活性是由于有效缓解了溶液的 pH 变化。