Treatment of diazo dye C.I. Reactive Black 5 in aqueous solution by combined process of interior microelectrolysis and ozonation

被引：15

作者：

Guo, Xiaoyan ^{[1
]}

Cai, Yaping ^{[1
]}

Wei, Zhongbo ^{[1
]}

Hou, Haifeng ^{[1
]}

Yang, Xi ^{[1
]}

Wang, Zunyao ^{[1
]}

机构：

[1] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resources Reuse, Nanjing 210023, Jiangsu, Peoples R China

来源：

WATER SCIENCE AND TECHNOLOGY | 2013年 / 67卷 / 08期

基金：

中国国家自然科学基金;

关键词：

acute toxicity; interior microelectrolysis; ozonation; Reactive Black 5; TEXTILE WASTE-WATER; MICRO-ELECTROLYSIS; AZO-DYE; DEGRADATION; REMOVAL; DECOLORIZATION; COAGULATION; TECHNOLOGY; OXIDATION; MECHANISM;

D O I：

10.2166/wst.2013.057

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Interior microelectrolysis (IM) as a pretreatment process was effective to treat Reactive Black 5 (RB5) in this study. The removal rates of chemical oxygen demand (COD), total organic carbon (TOC) and color were 46.05, 39.99 and 98.77%, respectively, when this process was conducted under the following optimal conditions: the volumetric ratio between iron scraps and active carbon (AC) (V(Fe)/V(C)) 1.0, pH 2.0, aeration dosage 0.6 L/min, and reaction time 100 min. Contaminants could be further removed by ozonation. After subsequent ozonation for 200 min, the solution could be completely decolorized, and the COD and TOC removal rates were up to 77.78 and 66.51%, respectively. In addition, acute toxicity tests with Daphnia magna showed that pretreatment by IM generated effluents that were more toxic when compared with the initial wastewater, and the toxicity was reduced after subsequent ozonation.

引用

页码：1880 / 1885

页数：6

共 46 条

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