ABSTRACT The efficacies of UV photolysis, UV-activated persulfate (UV/PS), and combined UV/Fe2+-activated persulfate (UV/PS/Fe2+) systems for degrading of different organic micropollutants in ultrapure water and groundwater were examined and compared. The studied micropollutants belonging to the different classes involved an artificial sweetener acesulfame K (ACE), beta-lactam antibiotic amoxicillin (AMX), and endocrine disrupting compound 4-nonylphenol (NP). Among the studied systems, the UV/PS/Fe2+ process showed the highest performance both in degradation and in mineralization of ACE (UVA-induced systems; kapp = 0.126 1/min and 80.3% TOC removal) and AMX (UVC-induced systems; kapp = 1.383 1/min and 85.4% TOC removal), followed by the UV/PS process. In the case of NP trials, the application of UVC/PS systems was the most promising, and after careful adjustment of oxidant concentration, it demonstrated a considerable improvement in the target compound degradation (at a NP/PS molar ratio of 1/4 kapp = 0.024 1/min) compared with the UVC photolysis (kapp = 0.016 1/min). Irrespective of the applied UV-induced treatment process, the efficacy of target compounds degradation was lower in groundwater as compared with ultrapure water trials.

中文翻译：

---

水基质中有机微污染物的紫外线诱导过硫酸盐氧化

摘要 研究并比较了紫外光解、紫外活化过硫酸盐 (UV/PS) 和联合 UV/Fe2+ 活化过硫酸盐 (UV/PS/Fe2+) 系统对超纯水和地下水中不同有机微污染物的降解效果。研究的属于不同类别的微污染物包括人工甜味剂安赛蜜 (ACE)、β-内酰胺抗生素阿莫西林 (AMX) 和内分泌干扰化合物 4-壬基酚 (NP)。在所研究的系统中，UV/PS/Fe2+ 工艺在 ACE（UVA 诱导系统；kapp = 0.126 1/min 和 80.3% TOC 去除率）和 AMX（UVC 诱导系统； kapp = 1.383 1/min 和 85.4% TOC 去除率），然后是 UV/PS 工艺。在NP试验的情况下，UVC/PS系统的应用是最有前途的，在仔细调整氧化剂浓度后，与 UVC 光解 (kapp = 0.016 1/min) 相比，目标化合物的降解（NP/PS 摩尔比为 1/4 kapp = 0.024 1/min）显着改善. 无论采用何种紫外线诱导处理工艺，与超纯水试验相比，地下水中目标化合物的降解功效都较低。