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臭氧氧化苯乙烯有机气体性能及机制

Keywords: 挥发性有机物(VOCs),臭氧高级氧化,苯乙烯

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Abstract:

采用臭氧高级氧化处理高浓度苯乙烯有机废气,研究了进气苯乙烯浓度、臭氧浓度、停留时间、O3/C8H8摩尔比对苯乙烯去除效率的影响。研究结果表明,臭氧氧化能有效净化苯乙烯有机废气,苯乙烯去除效率可达66.6%。适宜运行条件为:停留时间为3.6s,O3/C8H8摩尔比为0.46。采用GC-MS分析臭氧氧化苯乙烯出口气样,研究结果表明,苯甲醛(C6H5CHO)和苯甲酸(C6H5COOH)为臭氧氧化苯乙烯的中间产物。臭氧高级氧化苯乙烯机制为苯乙烯气体被臭氧氧化为苯甲醛和苯甲酸,然后继续臭氧氧化为最终产物二氧化碳和水。

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