The degradation of the artificial sweetener acesulfame (ACE) was investigated using an ultraviolet (UV)₃₆₅-activated peroxydisulfate (PDS) process. The results demonstrated that the ACE reaction rate with the UV/PDS process followed pseudo first-order kinetics (R² >0.9) under various conditions. A high dosage of PDS, alkaline condition, and the existence of NO₃⁻ and Cl⁻ enhanced ACE degradation; however, a high dosage of ACE, the existence of HCO₃⁻, humic acid, and fulvic acid, and a real water matrix did not facilitate the degradation of ACE. Four types of transformation products were detected in the degradation of ACE by UV/PDS, and the primary degradation pathways were oxidation, hydroxyl substitution, hydrolysis, and hydration. The hydroxyl radicals played a predominant role (71.31%) in the degradation of ACE by the UV/PDS process, followed by sulfate radicals (14.57%) and direct photolysis (14.12%). Both the degradation and mineralization rates of ACE using the UV/PDS process had significant advantages over that of the UV/H₂O₂ process regarding ACE degradation, indicating that the UV/PDS process is more promising for treating water containing ACE.

使用紫外线（UV）₃₆₅活化的过氧二硫酸盐（PDS）工艺研究了人工甜味剂醋磺酰胺（ACE）的降解。结果表明，在各种条件下，UV / PDS工艺的ACE反应速率遵循拟一级动力学（R ² > 0.9）。PDS，碱性条件，和NO的存在的高剂量₃ ^-和Cl ^-增强ACE降解; 然而，ACE，HCO的存在以高剂量₃ ^-，腐殖酸和富里酸，以及真正的水基质都不能促进ACE的降解。在UV / PDS降解ACE中检测到四种转化产物，主要降解途径为氧化，羟基取代，水解和水合。羟基自由基在通过UV / PDS工艺降解ACE中起主要作用（71.31％），其次是硫酸根自由基（14.57％）和直接光解（14.12％）。就ACE降解而言，使用UV / PDS工艺的ACE降解和矿化速率均优于UV / H ₂ O ₂工艺，这表明UV / PDS工艺对于处理含ACE的水更有前景。