Advanced oxidation processes (AOPs), such as hydroxyl radical (•OH) and sulfate radical (•SO₄^-) mediated oxidation, are proved to be effective methods to remove the organophosphorus esters (OPEs) in wastewater effluents. However, few studies have reported about the bimolecular reaction rate constants between free radicals (•OH and •SO₄^-) and OPEs. This issue was solved by selecting three OPEs as model compounds, the oxidation of these OPEs in UV/H₂O₂ and UV/K₂S₂O₈ process were studied. Tris(2-chloroethyl) phosphate (TCEP), tris(1-chloro-2-propyl) phosphate (TCPP), and tris(2,3-dichloropropyl) phosphate (TDCPP) can hardly be oxidized through direct irradiation methods using UV lamp, with the oxidation rate less than 30% after 7 h′ irradiation. However, TCEP, TCPP, and TDCPP undergo degradation via UV/H₂O₂ and UV/K₂S₂O₈ processes easily, the oxidation rates increased with increasing H₂O₂ and K₂S₂O₈ dosage. The oxidation rates of three OPEs have been studied using competition experiments in the UV/H₂O₂ and UV/K₂S₂O₈ processes. The bimolecular reaction rate constants of TCEP, TCPP and TDCPP with •OH were 2.50 × 10¹⁰, 3.95 × 10¹⁰ and 2.94 × 10¹⁰ respectively; while •SO₄^- were 3.00 × 10⁷, 1.82 × 10⁷ and 2.06 × 10⁷ respectively. Results showed that the simplified kinetic model involves only steady state concentration of free radicals and the molecular reaction rate contents are available for calculating the oxidation rates of OPEs in ultrapure water.

高级氧化处理（高级氧化），例如羟基自由基（OH•）和硫酸根（SO• ₄ ^- ）介导的氧化，被证明是在废水排放以除去有机磷酯（的OPE）的有效方法。然而，很少有研究报道了自由基的双分子反应速率常数（•OH的和•SO ₄ ^- ）的OPE和。通过选择三种OPE作为模型化合物来解决此问题，这些OPE在UV / H ₂ O ₂和UV / K ₂ S ₂ O _8中的氧化过程进行了研究。磷酸三（2-氯乙基）磷酸酯（TCEP），磷酸三（1-氯-2-丙基）酯（TCPP）和磷酸三（2,3-二氯丙基）磷酸酯（TDCPP）几乎不能通过使用紫外线灯的直接照射方法进行氧化，照射7 h'后氧化率小于30％。然而，TCEP，TCPP和TDCPP容易通过UV / H ₂ O ₂和UV / K ₂ S ₂ O ₈过程降解，氧化速率随H ₂ O ₂和K ₂ S ₂ O ₈剂量的增加而增加。在UV / H ₂ O _2中使用竞争实验研究了三种OPE的氧化速率和UV / K ₂ S ₂ O ₈工艺。TCEP，TCPP和TDCPP与•OH的双分子反应速度常数为2.50×10 ¹⁰ 3.95×10，¹⁰和2.94×10 ¹⁰分别; 而•SO ₄ ^-分别为3.00×10 ⁷ 1.82×10 ⁷ 2.06×10 ⁷分别。结果表明，简化的动力学模型仅涉及自由基的稳态浓度，分子反应速率含量可用于计算超纯水中OPEs的氧化速率。