Degradation and decolorization of reactive red X-3B aqueous solution by ozone integrated with internal micro-electrolysis

作者：Ruan, Xin-Chao; Liu, Ming-Yue; Zeng, Qing-Fu^*; Ding, Yan-Hua

来源：Separation and Purification Technology, 2010, 74(2): 195-201.

DOI：10.1016/j.seppur.2010.06.005

• Reactive red X-3B
• Internal micro-electrolysis
• Ozone
• Synergetic effect

Ozone integrated with internal micro-electrolysis (O-3/IE) was applied to electrochemically oxidize reactive red X-3B owing to its well-established synergetic effect in the present study. The final removal rates of color, COD, TOC and AOX were found to be 99%, 85%, 59%, and 74%, respectively, when the following optimal conditions were used: dyestuff concentration of 1 g/L with a pH of 9.0, a reaction temperature of 60 degrees C, 400g of iron scraps with the diameter in the range of 0.9-2.0 mm and 10 g/h ozone flow rate. The dominant degradation mechanism of reactive red X-3B was elucidated by the addition of radical scavenger/enhancer. The results indicated that the formation of hydroxyl radicals in the presence of ozone was the major contributing factor in O-3/IE system.

• 出版日期2010-8-17
• 单位武汉纺织大学