| 水力空化强化H2O2氧化降解水中苯酚的研究 |
| |
| 引用本文： | 陈利军,吴纯德,张捷鑫,贺明和.水力空化强化H2O2氧化降解水中苯酚的研究[J].环境科学研究,2006,19(3):67-70. |
| |
| 作者姓名： | 陈利军 吴纯德 张捷鑫 贺明和 |
| |
| 作者单位： | 华南理工大学,环境科学与工程学院,广东,广州,510641 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| |
| 摘 要： | 采用水力空化强化H2O2降解水中苯酚,考察入口压力,ρ(H2O2)和溶解气体等因素对苯酚降解的影响;比较了水力空化方法和超声空化方法降解水中苯酚的能耗效率.研究表明:苯酚降解率随着入口压力的增大而增大,入口压力从1.0×105 Pa增大到3.5×105 Pa时,相应地苯酚降解率从17.6%增加到47.6%;在一定条件下,ρ(H2O2)有一个最佳值;不同的溶解气体对苯酚降解效果的影响不同,O2的效果比N2好.分析ρ(H2O2)和溶解气体对苯酚降解效果的影响及苯酚降解中间产物的分布表明,羟基自由基的产生是苯酚降解的主要原因,水力空化的能量利用率是超声空化的5.4倍.
|
| 关 键 词： | 水力空化 苯酚 双氧水 中间产物 |
| 文章编号： | 1001-6929（2006）03-0067-04 |
| 收稿时间： | 2005-09-19 |
| 修稿时间： | 2005-09-19 |
Degradation of Phenol in Water by Hydrodynamic Cavitation and H2O2 |
| |
| CHEN Li-jun,WU Chun-de,ZHANG Jie-xin and HE Ming-he.Degradation of Phenol in Water by Hydrodynamic Cavitation and H2O2[J].Research of Environmental Sciences,2006,19(3):67-70. |
| |
| Authors: | CHEN Li-jun WU Chun-de ZHANG Jie-xin and HE Ming-he |
| |
| Institution: | School of Environmental Science and Engineering,South China University of Technology,Guangzhou 510641,China;School of Environmental Science and Engineering,South China University of Technology,Guangzhou 510641,China;School of Environmental Science and Engineering,South China University of Technology,Guangzhou 510641,China;School of Environmental Science and Engineering,South China University of Technology,Guangzhou 510641,China |
| |
| Abstract: | The degradation of phenol in water was systematically investigated with the oxidation of H2O2 enhanced by hydrodynamic cavitation.The effects of inlet pressure,the mass concentration of H2O2 and the presence of dissolved gases were discussed in detail.The difference of the energy efficiency between hydrodynamic cavitation and acoustic cavitation was also discussed.The experimental results show: the rate of phenol degradation increases from 17.6% to 47.6% with increasing inlet pressure from 1.0×105 to 3.5×105 Pa correspondingly;under certain conditions,the mass concentration of added H2O2 has an optimum value;different dissolved gases have different influence on the degradation effect of phenol,and O2 is more efficient than N2.By analyzing the influence of H2O2 mass concentration and dissolved gases on the degradation of phenol,and investigating the concentration distribution of the intermediate products,it can be concluded that the formation of ·OH free radicals is the main reason of the degradation of phenol.Degradation of phenol per unit energy input for hydrodynamic cavitation is 5.4 times higher than that for acoustic cavitation. |
| |
| Keywords: | hydrodynamic cavitation phenol hydrogen peroxide intermediates |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《环境科学研究》浏览原始摘要信息 |
| 点击此处可从《环境科学研究》下载免费的PDF全文 |
|
