Assessment of the efficiency of photocatalysis on tetracycline biodegradation

被引：170

作者：

Mboula, V. Maroga ^{[1
]}

Hequet, V. ^{[1
]}

Gru, Y. ^{[2
]}

Colin, R. ^{[2
]}

Andres, Y. ^{[1
]}

机构：

[1] LUNAM Univ, Ecole Mines Nantes, CNRS, GEPEA,UMR 6144, F-44307 Nantes 03, France

[2] Inst Dept Anal & Conseil, F-44327 Nantes, France

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2012年 / 209卷

关键词：

Tetracycline; Photocatalysis; Sturm test; Toxicity test; LC-ESI-MS/MS; Degradation pathway; ADVANCED OXIDATION PROCESSES; PERSONAL CARE PRODUCTS; WASTE-WATER; ENDOCRINE DISRUPTORS; AQUEOUS-MEDIUM; DEGRADATION; PHARMACEUTICALS; ANTIBIOTICS; ENVIRONMENT; PHOTODEGRADATION;

D O I：

10.1016/j.jhazmat.2012.01.032

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The use of photocatalysis to improve the biodegradability of an antibiotic compound, tetracycline (TC) was investigated. The toxicity of TC and its degradation products were also examined. The Sturm test was conducted to assess the biodegradability of by-products formed in the photocatalytic process. The toxicity of tetracycline and its by-products was evaluated using a dehydrogenase inhibition test, which showed a decrease in toxicity during photocatalysis. However, the Sturm test results indicated that, like tetracycline, the by-products are not biodegradable. Possible structures of these by-products were determined using liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS). It was found that, during the photocatalytic process, the TC aromatic ring is not opened and the structure of the identified by-products is quite similar to that of tetracycline. A reaction pathway is proposed. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：355 / 364

页数：10

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