This study intends to develop removal mechanism of paracetamol during the catalytic ozonation on zeolite4A (Z4A). In order to understand the mechanism on Z4A, degradation of paracetamol, removal of Kjeldhal nitrogen, production of superoxide ion radical and the effect of hydroxyl radical scavenger was studied. The results obtained indicate that, decomposition of paracetamol leads to the decrease in Kjeldhal nitrogen content at considerably higher levels in the case of Z4A/O₃ process. The results further revealed that Z4A do not promote the decomposition of ozone leading to the production of superoxide ion radical and hydroxyl radicals. It is therefore, suggested that ozonation process of paracetamol in the presence of Z4A follows a non-radical mechanism.

这项研究旨在开发在zeolite4A（Z4A）上催化臭氧氧化过程中对乙酰氨基酚的去除机理。为了理解Z4A的机理，研究了扑热息痛的降解，Kjeldhal氮的去除，超氧离子自由基的产生以及羟基自由基清除剂的作用。获得的结果表明，在Z4A / O ₃工艺的情况下，对乙酰氨基酚的分解导致Kjeldhal氮含量的降低，含量要高得多。结果进一步表明Z4A不促进臭氧的分解，导致产生超氧化物离子自由基和羟基自由基。因此，建议在Z4A存在下对乙酰氨基酚的臭氧化过程遵循非自由基机理。