Zhou Tao, Lu Xiaohua, Wang Jia, Wong Fook-Sin, Li Yaozhong
Environmental Science Research Institute, School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
J Hazard Mater. 2009 Jun 15;165(1-3):193-9. doi: 10.1016/j.jhazmat.2008.09.100. Epub 2008 Oct 2.
A novel Fenton like system, employing Zero Valent Iron (ZVI) and air bubbling, was developed to treat a simulated textile wastewater containing azo dye Reactive Black 5 (RB5) and Ethylenediaminetetraacetic acid (EDTA). By dioxygen activation, H(2)O(2) was self-produced continuously in the system through a series of iron-EDTA ligands reactions. After 3h reaction, the removal rates of RB5, EDTA, Total Organic Carbon (TOC), and Chemical Oxygen Demand (COD) were 100%, 96.5%, 68.6% and 92.2%, respectively. The effects of pH, atmosphere as well as the initial concentration of RB5, EDTA and ZVI were also investigated. Two types of external energy-Ultrasound (US) and Ultraviolet (UV) were introduced into the Fenton like system, respectively. The effect of these external energies on the degradation of the wastewater was assessed. It was demonstrated that US presented significant synergistic effect on the degradation and mineralization of both RB5 and EDTA, while UV could not achieve any improvement.
开发了一种新型类芬顿体系，该体系采用零价铁（ZVI）并鼓入空气，用于处理含有偶氮染料活性黑5（RB5）和乙二胺四乙酸（EDTA）的模拟纺织废水。通过双氧活化，体系中通过一系列铁-EDTA配体反应连续自生过氧化氢（H₂O₂）。反应3小时后，RB5、EDTA、总有机碳（TOC）和化学需氧量（COD）的去除率分别为100%、96.5%、68.6%和92.2%。还研究了pH值、气氛以及RB5、EDTA和ZVI初始浓度的影响。分别将两种外部能量——超声波（US）和紫外线（UV）引入类芬顿体系。评估了这些外部能量对废水降解的影响。结果表明，US对RB5和EDTA的降解及矿化具有显著的协同作用，而UV则未实现任何改善。
