H2O2/UV-C and Fe2+/H2O2/UV-C versus TiO2/UV-A treatment for reactive dye wastewater

被引：102
|
作者：
Arslan, I [1 ]
Balcioglu, IA
Tuhkanen, T
Bahnemann, D
机构：
[1] Bogazici Univ, Inst Environm Sci, TR-80815 Bebek, Turkey
[2] Tampere Univ Technol, Inst Water & Environm Engn, FIN-33101 Tampere, Finland
[3] Inst Solarenergieforsch GMBH, D-30165 Hannover, Germany
来源：
JOURNAL OF ENVIRONMENTAL ENGINEERING | 2000年 / 126卷 / 10期
关键词：
D O I：
10.1061/(ASCE)0733-9372(2000)126:10(903)
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study investigated the advanced oxidation of commonly used reactive dyestuffs in exhausted dye-bath effluents in homogeneous (H2O2/UV-C and photo-Fenton) and heterogeneous (TiO2/UV-A) media. Photocatalytic treatment efficiencies of two different TiO2 powders (PC 500 and Mikroanatas) and the platinized Degussa P25 were compared with that of the more well-known Degussa P25 in varying pH media. Treatment performance was strongly affected by the initial H2O2 concentration for H2O2/UV-C and photo-Fenton oxidation systems, whereas for the TiO2/UV-A process only PC 500 TiO2 powder, an anatase crystal phase of the semiconductor, exhibited a significantly pH-dependent reaction efficiency. The decolorization rate followed the order of Fenton/UV-C > Pt-P25/UV-A > Mikroanatas/UV-A > P25/UV-A > PC 500/UV-A > H2O2/UV-C, whereas the decreasing order for total organic carbon reduction was Fenton/UV-C > H2O2/UV-C > Mikroanatas/UV-A > Pt-P25/UV-A > P25/UV-A > PC 500/UV-A for the studied reaction conditions. Removal of optical density at 254-nm wavelength ranged between 75 and 96%.
引用
收藏
页码：903 / 911
页数：9
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