In this study, the reaction mechanisms for ozonation of ammonia nitrogen in the presence of Co₃O₄ or MgO were investigated. For the reaction over Co₃O₄, Cl– in the reaction solution was indispensable and ClO– was formed by a non-catalytic oxidation of Cl–. Co₃O₄ promoted the reaction of NH₄⁺ with ClO– to give the products including NO₃–, chloramines and gaseous products. In contrast, Cl– was unnecessary for the reaction with MgO. pH of the reaction solution was maintained at around 9 throughout the reaction owing to partial dissolution of MgO. Ammonia nitrogen was decomposed to mainly NO₃– by non-catalytic radical reaction involving OH·, which was formed by the reaction of OH– with O₃ in weakly basic solution. To keep the reaction solution weakly basic, H⁺ formed with the decomposition of NH₄⁺ was neutralized. As a result, about the same amount of Mg²⁺ as that of decomposed ammonia nitrogen was dissolved.

在这项研究中，研究了在Co ₃ O ₄或MgO存在下氨氮臭氧化的反应机理。对于在Co ₃ O _4上进行的反应，反应溶液中的Cl–是必不可少的，而ClO–是由Cl–的非催化氧化形成的。Co ₃ O ₄促进了NH ₄ ⁺与ClO–的反应，生成包括NO _3–，氯胺和气态产物的产物。相反，Cl–对于与MgO的反应是不必要的。由于MgO的部分溶解，在整个反应过程中反应溶液的pH保持在9左右。氨氮主要分解为NO ₃–通过涉及OH·的非催化自由基反应，这是由OH–与O ₃在弱碱性溶液中反应形成的。保持反应溶液的弱碱性，H ⁺与NH分解形成₄ ⁺中和。结果，溶解了与分解的氨氮大致相同量的Mg ²⁺。