Comparative Study of the Degradation of the Diclofenac Drug Using Photo-Peroxidation and Heterogeneous Photocatalysis with UV-C and Solar Radiation

被引：9

作者：

Diaz-Rodriguez, Dennis ^{[1
]}

Palacios-Anton, Maria Elena ^{[1
]}

Da Rocha Santana, Rayany Magali ^{[2
]}

Quiroz-Fernandez, Luis Santiago ^{[3
]}

Gomez-Salcedo, Yunet ^{[1
]}

Andrade de Lucena, Alex Leandro ^{[2
]}

Napoleao, Daniella Carla ^{[2
]}

Rodriguez-Diaz, Joan Manuel ^{[1
,3
,4
]}

机构：

[1] Univ Tecn Manabi, Fac Ciencias Matemat Fis & Quim, Dept Ingn Quim, Portoviejo, Ecuador

[2] Univ Fed Pernambuco, Dept Engn Quim, Recife, PE, Brazil

[3] Univ Tecn Manabi, Inst Posgrad, Portoviejo, Ecuador

[4] Univ Fed Paraiba, Programa Posgrad Engn Quim, Joao Pessoa, Paraiba, Brazil

来源：

WATER AIR AND SOIL POLLUTION | 2020年 / 231卷 / 04期

关键词：

Advanced oxidation process; Pharmaceutical; Photoreactor; UHPLC; WASTE-WATER; PHARMACEUTICALS; REMOVAL; HPLC;

D O I：

10.1007/s11270-020-04497-y

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Diclofenac has been detected in water and terrestrial matrices, causing severe changes in the environment. This is due to the fact that it is one of the most widely used nonsteroidal anti-inflammatory drugs in the world. The advanced oxidation processes (AOPs) of photo-peroxidation and heterogeneous photocatalysis were tested in this work using UV-C and solar radiation to degrade diclofenac in aqueous solutions. To monitor the efficiency of the degradation processes an ultrahigh performance liquid chromatography with ultraviolet detection at a wavelength of 285 nm was applied. Both processes were found to be efficient (> 78%) after 60 min of treatment, being possible to determine the reaction kinetics for each one of them. Intermediate formation was also observed after 60 min which were also degraded by increasing the treatment time to 120 min. For the treatments using UV-C radiation, an order of 1.0 was observed, while the treatments that applied solar radiation obtained an order of 0.2 for the photocatalysis and 0.8 for photo-peroxidation.

引用

页数：12

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