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| H2O超声过程中H2O2生成动力学 | |
| 引用本文： | 葛建团,曲久辉,王国华. H2O超声过程中H2O2生成动力学[J]. 环境化学, 2004, 23(2): 140-144 |
| 作者姓名： | 葛建团 曲久辉 王国华 |
| 作者单位： | 中国科学院生态环境研究中心,环境水质学国家重点实验室,北京,100085;中国科学院生态环境研究中心,环境水质学国家重点实验室,北京,100085;中国科学院生态环境研究中心,环境水质学国家重点实验室,北京,100085 |
| 基金项目： | 国家杰出青年基金 (No.5 0 2 2 5 82 4)，王宽诚教育基金会资助项目 |
| 摘 要： | 采用50kHz超声清洗槽式声化学反应器，以纯水为空化液体，研究了超声过程中H2O2生成动力学．分别探讨了空化气体种类(Ar,O2)及组成与流量、空化液体体积与反应器形状对H2O2生成速率及产率的影响．结果表明，超声过程中H2O2的生成可采用零级反应动力学方程来进行描述．在此频率下和考察范围内，采用Ar作为空化气体比O2更有利于H2O2的生成．当混合气体组成为Ar:O2=70：30(V/V)时，H2O2的生成速率最快．随着空化气体流量的增加，H2O2产率增加，随后降低．增加空化液体的体积，H2O2的生成速率降低．与锥形瓶相比，圆底烧瓶中H2O2的产率明显降低． |
| 关 键 词： | 超声 空化 H2O2 动力学 |
PRODUCTION DYNAMICS OF H2O2 DURING SONOLYSIS OF H2O |
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| GE Jian tuan QU Jiu hui WANG Guo hua. PRODUCTION DYNAMICS OF H2O2 DURING SONOLYSIS OF H2O[J]. Environmental Chemistry, 2004, 23(2): 140-144 | |
| Authors: | GE Jian tuan QU Jiu hui WANG Guo hua |
| Abstract: | The production dynamics of H 2O 2 during sonolysis of H 2O in an ultrasonic cleaning bath(50 kHz,output power 150 W)has been studied.The parameters such as operating gas(argon/oxygen)composition,operating gas flow rate,sonication liquid volume and the configuration of the reactors have been investigated.The experimental results show that the production of H 2O 2 accords with zero order reaction dynamics.Argon as operating gas is more favorable for the production of H 2O 2 than oxygen.The H 2O 2 yield reaches a maximum at the ratio of Ar/O 2=70/30( V/V ).The rate of H 2O 2 production first increases with increasing operating gas flow rate,then decreases.The increases in liquid volume reduce the oproction rate of H 2O 2.In comparison with conical flask,the production of H 2O 2 in round bottom flask is much lower. |
| Keywords: | ultrasound cavitation H 2O 2 dynamics |
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