[1]王金晓,郑伟杰,许荣刚,等.UV/SPC体系降解对乙酰氨基酚的效能及机制[J].中国给水排水,2024,40(7):65-72.
　WANGJin-xiao,ZHENGWei-jie,XURong-gang,et al.Performance and Mechanism of UV/SPC System for Degradation of Acetaminophen[J].China Water & Wastewater,2024,40(7):65-72.
点击复制

UV/SPC体系降解对乙酰氨基酚的效能及机制

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第40卷 期数: 2024年第7期 页码: 65-72 栏目: 出版日期: 2024-04-01
Title:
Performance and Mechanism of UV/SPC System for Degradation of Acetaminophen
作者:
王金晓1， 郑伟杰2， 许荣刚3， 罗从伟1,4， 武道吉1,4， 张新玉1,4， 成小翔1,4， 许兵1， 任会学1， 陈飞勇4
（1.山东建筑大学 市政与环境工程学院，山东 济南 250101；2.济南市市政工程设计研究院<集团>有限责任公司，山东 济南 250101；3.同圆设计集团股份有限公司，山东 济南 250101；4.山东建筑大学 资源与环境创新研究院，山东 济南 250101）
Author(s):
WANG　Jin-xiao1， ZHENG　Wei-jie2， XU　Rong-gang3， LUO　Cong-wei1，4， WU　Dao-ji1，4，ZHANG　Xin-yu1，4， CHENG　Xiao?xiang1，4， XU　Bing1， REN　Hui-xue1， CHEN　Fei-yong4
（1. School of Municipal and Environmental Engineering， Shandong Jianzhu University， Jinan 250101， China； 2. Jinan Municipal Engineering Design and Research Institute Co. Ltd.， Jinan 250101， China； 3. Tongyuan Desgin Group Co. Ltd.， Jinan 250101， China； 4. Institute of Resources and Environment Innovation， Shandong Jianzhu University， Jinan 250101， China）
关键词:
过碳酸钠;  对乙酰氨基酚;  降解效能;  急性毒性
Keywords:
sodium percarbonate;  acetaminophen;  degradation performance;  acute toxicity
摘要:
利用紫外催化过碳酸钠（SPC）降解对乙酰氨基酚（APAP），并探究降解效能及机理。结果表明，在pH=7、APAP初始浓度为10 mol/L、SPC浓度为2 mmol/L的条件下，反应60 min后对APAP的去除率达到100%。自由基淬灭实验和电子自旋共振（ESR）检测证明，UV/SPC体系中降解APAP的主要活性物质是·OH和CO3·-，其贡献率分别为61.5%和38.5%。在优化实验参数过程中发现，适当增加SPC的浓度和降低反应的pH能有效促进APAP的降解，但天然有机物（NOM）和HCO3-会抑制APAP的降解。通过气相色谱串联质谱（GC-MS/MS）测定出13 种APAP的降解产物，推测APAP主要通过电子转移、夺氢反应、取代反应等方式被逐步降解。TOC检测结果表明，UV/SPC体系矿化程度低，导致大量中间产物积累。急性毒性实验表明，APAP在降解过程中毒性增强。
Abstract:
The performance and mechanism of UV-catalyzed sodium percarbonate (SPC) for degrading acetaminophen (APAP) were investigated. The removal rate of APAP reached 100% after 60 min of reaction when the pH, initial APAP concentration and SPC concentration were 7, 10 mol/L and 2 mmol/L, respectively. The free radical quenching experiment and electron spin resonance (ESR) detection showed that the main active substances for degrading APAP in the UV/SPC system were ·OH and CO3·-, and their contribution rates were 61.5% and 38.5%, respectively. The optimization experiment indicated that appropriately increasing the concentration of SPC and decreasing the pH of the reaction could effectively promote the degradation of APAP. However, natural organic matter (NOM) and HCO3- inhibited the degradation of APAP. Thirteen degradation products of APAP were determined by gas chromatography-tandem mass spectrometry (GC-MS/MS). It was speculated that APAP was gradually degraded by the pathways such as electron transfer, hydrogen atom abstraction and substitution reaction. The detection of TOC indicated that the mineralization degree of the UV/SPC system was low, resulting in the accumulation of a large number of intermediate products. The acute toxicity experiments indicated that the toxicity of APAP increased during degradation.
更新日期/Last Update: 2024-04-01