Comparative analysis of UV-C/H2O2 and UV-A/TiO2 processes for the degradation of diclofenac in water

被引：0
作者：
Daria Juretic Perisic
Marin Kovacic
Hrvoje Kusic
Urska Lavrencic Stangar
Vedrana Marin
Ana Loncaric Bozic
机构：
[1] University of Zagreb,Faculty of Chemical Engineering and Technology
[2] University of Nova Gorica,Laboratory for Environmental Research
[3] EnCor Biotechnology,undefined
来源：
Reaction Kinetics, Mechanisms and Catalysis | 2016年 / 118卷
关键词：
Diclofenac; Photooxidation; Photocatalysis; Biodegradability; Toxicity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The study investigates the treatment of diclofenac (DCF), a pharmaceutical included in the first watch list of the European Water Framework Directive as a new potential priority substance in water. Since the conventional wastewater treatment technologies do not efficiently remove DCF, advanced treatment technologies capable of its complete removal or destruction of its biological activity, need to be evaluated and eventually employed. For that purpose, typical representatives of photooxidative and photocatalytic advanced oxidation processes were applied. The effectiveness of UV-C/H2O2 and UV-A/TiO2 were compared regarding DCF conversion and mineralization kinetics, water quality parameters for assessing biodegradability and toxicity. In spite of similar biodegradability profiles, the obtained results indicate different DCF degradation pathways, which are reflected in different profiles of toxicity towards Vibrio fischeri. The observed DCF conversion and mineralization kinetics revealed the benefits of UV-C/H2O2 process. However, lower toxicity favored the application of photocatalytic over photooxidative treatment for DCF removal.
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页码：451 / 462
页数：11
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