标题：Performance of artificial sweetener sucralose mineralization via UV/O-3 process: Kinetics, toxicity and intermediates
作者： Xu, Y (Xu, Yin); Wu, Y (Wu, Ying); Zhang, W (Zhang, Wei); Fan, XH (Fan, Xiaohui); Wang, Y (Wang, Yan); Zhang, H (Zhang, Hui)
来源出版物：CHEMICAL ENGINEERING JOURNAL 卷：353 页码: 626-634 DOI：10.1016/j.cej.2018.07.090 出版年： DEC 1 2018
摘要：Sucralose (SUC) is ubiquitously present in aquatic ecosystems in many parts of the world, owing to its widespread usage and ineffective elimination in wastewater treatment plants. This study investigated the mineralization of SUC in aqueous solution via UV/O-3 process and found that SUC can be mineralized efficiently. Effect of several operating parameters like solution pH, O-3 concentration, gas flow rate and initial SUC concentration, on TOC removal were explored. Results indicated that the mineralization efficiency of SUC reached almost 90% in 120 min after UV/O-3 treatment at neutral pH. The intensity of hydroxyl radicals generated in sole O-3 and UV/O-3 processes were compared using the fluorescence spectra analysis. Toxicity tests carried out using Daphnia Magna indicated that the UV/O-3 process under the used experimental conditions was much more effective in the detoxification of the SUC solution than sole O-3 process. The presence of inorganic anion like NO3- exhibited an enhancement on the mineralization rate, while Cl- showed some positive effect at low concentration (1 mM) but inhibited SUC mineralization at higher concentrations (10-200 mM). Finally, the intermediates produced in UV/O-3 process were identified by LC-MS analysis and a possible transformation pathway was briefly discussed.
作者关键词：Sucralose (SUC); UV/O-3 process; Kinetics; Mineralization; Transformation products
扩展关键词： WASTE-WATER TREATMENT; ADVANCED OXIDATION PROCESSES; AQUEOUS-SOLUTION; TRANSFORMATION PRODUCTS; TREATMENT PLANTS; DRINKING-WATER; PHOTOCATALYTIC DEGRADATION; PHOTO-FENTON; FOOD-INTAKE; OZONATION
通讯作者地址：Wang, Y (reprint author), Wuhan Univ, Hubei Environm Remediat Mat Engn Technol Res Ctr, Dept Environm Sci & Engn, Wuhan 430079, Hubei, Peoples R China.
Wang, Y (reprint author), Anhui Sci & Technol Univ, Dept Environm Sci & Engn, Donghua Rd 9, Fengyang 233100, Peoples R China.
Zhang, H (reprint author), Wuhan Univ, Dept Environm Sci & Engn, Wuhan 430079, Hubei, Peoples R China.
[Xu, Yin; Wu, Ying; Zhang, Wei; Fan, Xiaohui; Wang, Yan; Zhang, Hui] Wuhan Univ, Hubei Environm Remediat Mat Engn Technol Res Ctr, Dept Environm Sci & Engn, Wuhan 430079, Hubei, Peoples R China.
[Wang, Yan] Anhui Sci & Technol Univ, Dept Environm Sci & Engn, Donghua Rd 9, Fengyang 233100, Peoples R China.
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