摘要
研究了超声-H2O2-CuO组合技术对苯酚的降解效果。考察了苯酚初始浓度、溶液温度及鼓入空气对苯酚去除率的影响。实验结果表明,与未鼓入空气时相比,连续鼓气时苯酚的降解效果较好;初始浓度低,苯酚去除率高;溶液温度从20℃上升到55℃时,苯酚去除率随温度升高而增大,温度对该过程的影响主要表现为对催化剂的影响而不是对超声作用的影响。高效液相色谱分析表明,苯酚降解的中间产物主要为对苯二酚、邻苯二酚及其他有机小分子物质,最终产物为草酸、二氧化碳和水。
The effect of phenol degradation by the ultrasound-H2O2-CuO technology has been investigated. The affecting factors such as initial phenol concentration, temperature and air were studied. The results show that the phenol removal rate in saturating air is higher than that not in saturating air during ultrasound-H2O2-CuO degrading phenol. And the phenol removal rate increases with the decreasing of initial phenol concentration. The phenol removal rate increases with the increasing of temperature at the range of 20 - 55℃. The main effect of temperature on this catalytic oxidation process is not on the ultrasound but on the catalyst. Analyzed by HPLC, the main intermediate products are hydroquinone, o-dihydroxybenzene and lower molecular weight organics. The final degradation products are oxalic acid, dioxide and H2O.
出处
《环境污染治理技术与设备》
CSCD
北大核心
2005年第11期62-65,共4页
Techniques and Equipment for Environmental Pollution Control
