Photocatalytic degradation of sulfa drugs with TiO2, Fe salts and TiO2/FeCl3 in aquatic environment-Kinetics and degradation pathway

被引：102

作者：

Baran, Wojciech ^{[1
]}

Adamek, Ewa ^{[1
]}

Sobczak, Andrzej ^{[1
,2
]}

Makowski, Andrzej ^{[1
]}

机构：

[1] Silesian Med Univ, Dept Gen & Analyt Chem, PL-41200 Sosnowiec, Poland

[2] Inst Occupat Med & Environm Hlth, PL-41200 Sosnowiec, Poland

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2009年 / 90卷 / 3-4期

关键词：

Sulfonamides; Photocatalytic degradation; Photocatalysis; Micro-pollutants; AQUEOUS-SOLUTION; WASTE-WATER; SULFONYLUREA HERBICIDES; VETERINARY ANTIBIOTICS; SULFONAMIDES; TOXICITY; FATE; SULFAMETHOXAZOLE; PHARMACEUTICALS; REMOVAL;

D O I：

10.1016/j.apcatb.2009.04.014

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The photocatalytic degradation of sulfanilamide, sulfacetamide, sulfathiazole, sulfamethoxazole and sulfadiazine in aqueous solutions was examined during their irradiation with UV-A (366 nm) with TiO2, Fe salts and TiO2/FeCl3 catalysts. The study was carried out by HPLC-UV, HPLC/MS-El and total organic carbon (TOC) methods. It was found that sulfonamides underwent photocatalytic degradation in the presence of TiO2, TiO2/FeCl3 and Fe3+ salts, and the optimum catalyst for this process can be FeCl3. Based on the identified intermediate products, a degradation pathway was proposed. Moreover, the rate of photocatalytic process carried out with FeCl3 as well as the relationship between the pH of irradiated solutions, initial concentrations of sulfanilamide and FeCl3 were stated. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：516 / 525

页数：10

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