使用漂白废水作为过氧化氢来源的高级氧化工艺对蓝色 CL-BR 染料进行脱色处理。

Decolorization of Blue CL-BR dye by AOPs using bleach wastewater as source of H2O2.

作者信息

Yasar Abdullah, Ahmad Nasir, Khan Aamir Amanat Ali, Yousaf Anwer

机构信息

Directorate of Research and Development, University of the Punjab, Lahore-Pakistan, 41-Kamran Block, Allama Iqbal Town, Lahore-Pakistan.

出版信息

J Environ Sci (China). 2007;19(10):1183-8. doi: 10.1016/s1001-0742(07)60193-4.

DOI:10.1016/s1001-0742(07)60193-4

PMID:18062415

Abstract

This research was focused on the investigation of the efficacy of advanced oxidation processes (Fenton, ozonation and UV/H2O2) for decolorization of reactive azo dye (Blue CL-BR) using bleach wastewater as possible source of H202. All the experiments were performed on the laboratory scale set-up. The results showed that colour removal efficiencies by UV or bleach (H2O2) alone were not so efficient. Fenton process with bleach wastewater was found to be the most effective at process conditions such as pH of 3 and H2O2/Fe2+ ratio of 24:1, resulting in 64% colour removal. Almost complete colour removal, i.e., 99% and 95% were achieved by UV/H2O2 and UV/bleach wastewater in 30 and 60 min, respectively. Ozonation proved an efficient method for decolorization of Blue CL-BR dye at alkaline pH. It was possible to achieve 98% colour removal with 30 min of ozonation at pH 9. The colour removal of dye was found to follow first order kinetics.

摘要

本研究聚焦于利用漂白废水作为可能的过氧化氢来源，研究高级氧化工艺（芬顿法、臭氧化法和UV/H₂O₂）对偶氮活性染料（蓝CL - BR）的脱色效果。所有实验均在实验室规模装置上进行。结果表明，单独使用紫外线或漂白剂（H₂O₂）脱色效率不高。发现在pH为3且H₂O₂/Fe²⁺比例为24:1等工艺条件下，用漂白废水的芬顿法最为有效，脱色率达64%。UV/H₂O₂和UV/漂白废水分别在30分钟和60分钟内实现了几乎完全脱色，即99%和95%。臭氧化法被证明是在碱性pH条件下对偶氮蓝CL - BR染料进行脱色的有效方法。在pH 9条件下臭氧化30分钟可实现98%的脱色率。染料的脱色过程符合一级动力学。