【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。更多还原

【Abstract】 Oxidation of anthraquinone dye Reactive Blue KN-R accomplished in basic Fenton,UV/Fenton and solar/Fenton/H₂C₂O₄ 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∶Fe²⁺∶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 carbon 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.更多还原