Song Shuang, Yao Jie, He Zhiqiao, Qiu Jianping, Chen Jianmeng
College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, People's Republic of China.
J Hazard Mater. 2008 Mar 21;152(1):204-10. doi: 10.1016/j.jhazmat.2007.06.104. Epub 2007 Jul 3.
The aim of this paper was to investigate the efficiency of the ozone-enhanced electrocoagulation (EC) process in the decolorization of C.I. Reactive Blue 19 in water using iron electrodes. We determined the effects of various operating parameters such as initial pH, initial dye concentration, current density, salt concentration, temperature, ozone flow rate, and distance between electrodes on decolorization efficiency in a laboratory-scale reactor. Increasing the initial dye concentration decreased the decolorization efficiency, whereas increasing the distance between electrodes increased it. The other operating factors had both positive and negative effects. With an initial pH of 10.0, an initial dye concentration of 100mg/L, current density of 10mA/cm2, salt concentration of 3000mg/L, temperature of 30 degrees C, ozone flow rate of 20mL/min, and distance between electrodes of 3cm, over 96% of the color was removed after 10min. As a consequence, removal of total organic carbon (TOC) was over 80%.
本文旨在研究臭氧强化电凝聚（EC）工艺在使用铁电极对水中的C.I.活性蓝19进行脱色方面的效率。我们在实验室规模的反应器中确定了各种操作参数，如初始pH值、初始染料浓度、电流密度、盐浓度、温度、臭氧流速和电极间距对脱色效率的影响。提高初始染料浓度会降低脱色效率，而增加电极间距则会提高脱色效率。其他操作因素既有积极影响也有消极影响。当初始pH值为10.0、初始染料浓度为100mg/L、电流密度为10mA/cm²、盐浓度为3000mg/L、温度为30℃、臭氧流速为20mL/min且电极间距为3cm时，10分钟后超过96%的颜色被去除。因此，总有机碳（TOC）的去除率超过80%。
