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首页> 外文会议>International Conference on Waste Management and Technology >Investigation of mechanism involved in TiO2 and Photo-Fenton photocatalytic degradation of emerging contaminant sucralose in aqueous media
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Investigation of mechanism involved in TiO2 and Photo-Fenton photocatalytic degradation of emerging contaminant sucralose in aqueous media

机译：含水介质中新兴污染物蔗糖的TiO2和光芬光催化降解的机制研究

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摘要

Sucralose is an artificial sweetener persistently present in wastewater treatment and aquatic environments. Two advanced oxidation processes (heterogeneous TiO2 and homogeneous Fenton photocatalysis) were employed for degradation of sucralose in aqueous phase. The aqueous samples were irradiated under a variety of experiment conditions (pH, light sources) and with different amount of TiO2, Fe (II) and H2O2. The disappearance of the sucralose followed pseudo-first-order kinetic according to the Langmuir-Hinshelwood model, where the rate constant increased with an increase in the initial sucralose concentration. Sucralose and intermediates were easily degraded and within 30 minutes of irradiation complete mineralization was achieved in both advanced oxidation processes. During the oxidation process, the chloride ion was detected and accumulated in solution. Results demonstrated that both heterogeneous TiO2 and homogeneous photo-Fenton photocatalytic treatments are suitable for the elimination of sucralose from the aqueous solution.
机译：Sucralose是一种人造甜味剂，持续存在于废水处理和水生环境中。使用两种先进的氧化方法（非均相TiO 2和均匀的Fenton光催化）用于水相中的蔗糖降解。在各种实验条件（pH，光源）和不同量的TiO 2，Fe（II）和H 2 O 2下照射水样品。根据Langmuir-Hinshelwood模型的伪第一阶动力学的消失，垂直于初始三氯蔗糖浓度的增加而增加。三氯蔗糖和中间体易降解，在经过先进的氧化过程中实现了30分钟的照射完全矿化。在氧化过程中，在溶液中检测并积聚氯离子。结果表明，异构TiO 2和均匀的光芬光催化处理适用于消除来自水溶液的蔗糖。

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