Kaolinite based catalysts for efficient ozonation of recalcitrant organic chemicals in water
作者： Wenfeng Ma , Jingze Hu , Brandon A. Yoza , Qinghong Wang , Xiaofei Zhang
DOI: 10.1016/J.CLAY.2019.04.011
关键词:
摘要: Abstract Kaolinite has been widely utilized as a raw material in industrial and agricultural fields. derived materials can be used catalysts catalytic ozonation process (COP) of recalcitrant organic chemicals wastewater with decreased costs improved profitability. The silicon (Si), aluminum (Al) oxygen (O) layered silicate kaolinite amorphous metakaolinite contribute to the formation active sites. contains surface OH groups, Si O Al structures that promote oxidation through hydroxyl radicals ( OHs) mineralizing pollutant p-nitrophenol. Different enhance mineralization reaction. Catalytic p-nitrophenol using increased total carbon removal (46% 41%, respectively) relative single (32%). Introduction Mn into further accelerate generation, improving activity. Among catalysts, highest activity was observed loaded (TOC 66%). Its enhanced may mainly attributed cooperative interactions from distributed oxides (Mn2+, Mn3+, Mn4+) groups. This study introduces potential application for treatment chemical wastewaters processes.
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