Decolorization of textile wastewater by photo-fenton oxidation technology

被引：263

作者：

Kang, SF ^{[1
]}

Liao, CH

Po, ST

机构：

[1] Tamkang Univ, Dept Water Resources & Environm Engn, Taipei, Taiwan

[2] Chia Nan Coll Pharm & Sci, Dept Environm Engn & Hlth, Tainan, Taiwan

来源：

CHEMOSPHERE | 2000年 / 41卷 / 08期

关键词：

decolorization; hydroxyl radical; photo-fenton; textile wastewater; color;

D O I：

10.1016/S0045-6535(99)00524-X

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This paper describes the use of photo-fenton process for color removal from textile wastewater stream. The wastewater sample to be treated was simulated by using colorless polyvinyl alcohol (PVA) and reactive dyestuff of R94H. As a result, the hydroxyl radical (HO .) oxidation can effectively remove color, but the chemical oxygen demand (COD) was removed in a slight degree. The color removal is markedly related with the amount of HO . formed. The optimum pH for both the OH . formation and color removal occurs at pH 3-5. Up to 96% of color can be removed within 30 min under the studied conditions. Due to the photoreduction of ferric ion into ferrous ion, color resurgence was observed after 30 min. The ferrous dosage and UV power affect the color removal in a positive way, however, the marginal benefit is less significant in the higher range of both. PVA as the major background COD of a textile wastewater stream inhibits the color removal insignificantly as its concentration increases. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1287 / 1294

页数：8

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