Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, 1266 TAMU, College Station, TX, 77843, USA,
Environ Sci Pollut Res Int. 2014;21(14):8525-33. doi: 10.1007/s11356-014-2786-y. Epub 2014 Apr 1.
Sucralose, a chlorinated carbohydrate, has shown its increased use as an artificial sweetener and persistently exists in wastewater treatment plant effluents and aquatic environment. This paper aims to review possible degradation of sucralose and related carbohydrates by biological, electrochemical, chemical, and advanced oxidation processes. Biodegradation of sucralose in waterworks did not occur significantly. Electrochemical oxidation of carbohydrates may be applied to seek degradation of sucralose. The kinetics of the oxidation of sucralose and the related carbohydrates by different oxidative species is compared. Free chlorine, ozone, and ferrate did not show any potential to degrade sucralose in water. Advanced oxidation processes, generating highly strong oxidizing agent hydroxyl radicals ((•)OH), have demonstrated effectiveness in transforming sucralose in water. The mechanism of oxidation of sucralose by (•)OH is briefly discussed.
三氯蔗糖，一种氯化碳水化合物，已被广泛用作人工甜味剂，且在污水处理厂的废水和水生环境中持续存在。本文旨在综述生物、电化学、化学和高级氧化等过程中三氯蔗糖及其相关碳水化合物可能的降解途径。在水厂中，三氯蔗糖的生物降解作用并不明显。电化学氧化碳水化合物可用于寻找三氯蔗糖的降解方法。比较了不同氧化物种氧化三氯蔗糖和相关碳水化合物的动力学。游离氯、臭氧和高铁酸盐在水中均没有显示出降解三氯蔗糖的潜力。高级氧化工艺生成具有强氧化性的羟基自由基 ((•)OH)，已被证明可有效转化水中的三氯蔗糖。简要讨论了 (•)OH 氧化三氯蔗糖的机制。
