摘要
以活性艳蓝KN-R作为研究对象,用UV/Fenton和solar/Fenton/草酸(H2C2O4)体系对其进行处理,对反应体系的影响因素作综合的评价。得到处理蒽醌染料废水的最佳条件:dye(活性艳蓝KN-R)∶Fe2+∶H2O2∶H2C2O4为5∶1∶15∶1.5,pH为3.0,反应时间为40 min。在最佳条件下,solar/Fenton/H2C2O4体系脱色率达到100%,COD和TOC去除率分别达到87%和66%以上。改进的Fenton方法能使难降解有机染料迅速脱色,矿化程度较高。并对此体系处理活性艳蓝KN-R废水的脱色过程进行动力学模拟,得到此反应为拟一级反应。
Oxidation of anthraquinone dye Reactive Blue KN-R accomplished in basic Fenton, UV/Fenton and solar/Fenton/H2 C2O4 systems were compared. Although addition of UV achieved a faster color removal than solar light, the further addition of H2C2O4 in the latter system made it an attractive lower cost alternative to the basic Fenton system for treatment of KN-R containing wastewater. The best result was achieved at pH=3.0 employing a dye ： Fe24 ： H2O2 ： H2C2O4 ratio of 5 ： 1 ： 15 ：1.5. After 40 min of oxidation at these optimum conditions, the treated sample became colorless while its chemical oxygen demand and total organic carboff were reduced by more than 87% and 66%, respectively. The improved Fenton system achieved faster and more completed oxidation of the anthraquinone dye KN-R. A pseudo-first order kinetics model was adequate to fit the experimental data.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2006年第3期183-186,共4页
Environmental Pollution & Control
基金
辽宁省教育厅科学计划资助项目(No.05L078)
