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题名: Effects of dye additives on the ozonation process and oxidation by-products: a comparative study using hydrolyzed CI Reactive Red 120
作者: Zhang, FF;  Yediler, A;  Liang, XM;  Kettrup, A
关键词: purification ;  ozonation ;  CI Reactive Red 120 ;  azo dye ;  textile dyeing and finishing industry
刊名: DYES AND PIGMENTS
发表日期: 2004
DOI: 10.1016/S0143-7208(03)00111-6
卷: 60, 期:1, 页:1-7
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Engineering, Chemical ;  Materials Science, Textiles
研究领域[WOS]: Chemistry ;  Engineering ;  Materials Science
英文摘要: Decolorization of azo reactive dyes by ozone has been described by several authors. However, the efficiency of ozonation and the by-products produced by dye additives/impurities such as synthetic precursors, by-products, salts and dispersing agents in commercial azo dyes during the oxidative treatment have not been reported. To investigate the effects of such impurities on the ozonation process and on the formation of oxidation by-products, a commercially available azo reactive dye C.I. Reactive Red 120 was chosen as a model compound. Experiments were conducted in aqueous solutions of hydrolyzed C.I. Reactive Red 120 (200 mg/l) either with or without purification. Treatment efficiencies of purified and unpurified dye were evaluated in terms of COD, BOD28, absorbance and initial decolorization rates. Additionally, organic and inorganic anions were analyzed by HPIC. After 28 days of incubation the BOD28/ COD ratio increased from 0.22 to 0.48 and from 0.05 to 0.26 for purified and unpurified C.I. Reactive Red 120, respectively, indicating an enhancement of biodegradable compounds in the ozonated solutions. The results also illustrate that the dye additives/impurities in commercial dyes affect the microbial activity as well as the biodegradability. It is therefore recommended that dyes should be purified before ozonation, if detailed information on the degradation processes and the resulting oxidation by-products are required. (C) 2003 Elsevier Ltd. All rights reserved.
关键词[WOS]: WASTE-WATER ;  AZO-DYES ;  SEMIBATCH REACTOR ;  OZONE ;  DEGRADATION ;  BIODEGRADABILITY ;  DECOLORIZATION ;  WASTEWATERS ;  EFFLUENTS ;  DYESTUFFS
语种: 英语
WOS记录号: WOS:000185982700001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138429
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.GSF, Natl Res Ctr Environm & Hlth, Inst Ecol Chem, D-85758 Neuherberg, Germany
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116011, Peoples R China
3.Tech Univ Munich, Chair Ecol Chem & Environm Analyt Chem, D-85350 Freising Weihenstephan, Germany

Recommended Citation:
Zhang, FF,Yediler, A,Liang, XM,et al. Effects of dye additives on the ozonation process and oxidation by-products: a comparative study using hydrolyzed CI Reactive Red 120[J]. DYES AND PIGMENTS,2004,60(1):1-7.
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