| H_2O_2对4氯-酚辐射降解动力学的影响 | |
| 胡俊 ; 王建龙 ; HU Jun ; WANG Jianlong | |
| 2010-06-04 ; 2010-06-04 | |
| 关键词 | 辐射分解 过氧化氢 氯酚 降解 反应动力学 radiolysis hydrogen peroxide chlorophenol degradation kinetics X703.1 |
| 其他题名 | Effect of H_2O_2 on the kinetics of radiolytical degradation 4-chlorophenol in aqueous solution |
| 中文摘要 | 研究了4-氯酚在60Coγ辐照以及γ辐照-H2O2联合作用下的降解反应动力学。通过分析4-氯酚辐照分解过程中总有机碳(TOC)、Cl-浓度的变化,探讨了H2O2对4-氯酚辐照分解反应动力学的影响。实验结果表明:γ辐照-H2O2联合技术显著提高了4-氯酚的脱氯率及TOC去除率,表明协同效应存在。单独辐照及其与H2O2协同作用下4-氯酚的降解均符合一级反应动力学,当H2O2质量浓度分别为175、35、0 mg.L-1时,反应速率常数依次为:0.447 3、0.398 1、0.180 9 h-1。4-氯酚在辐照降解过程中释放Cl-的反应较复杂,不属于简单级数的动力学反应。; This work investigates the effect of hydrogen peroxide(H2O2) on the γ-ray irradiation induced degradation of 4-CP.The effect of hydrogen peroxide on the kinetics of the 4-CP radiolytical degradation was determined by analyzing the variation of the TOC and the chloride ion concentration during radiolysis of 4-CP in aqueous solution.The experimental results show that the hydrogen peroxide strongly promoted the TOC removal efficiency and the dechlorination rate of the 4-CP radiolysis.The radiolytical degradation of 4-CP by γ-ray irradiation alone or by γ-ray irradiation combined with hydrogen peroxide can be described by first-order reaction kinetics with rate constants of 0.447 3 h-1,0.398 1 h-1,and 0.180 9 h-1 for hydrogen peroxide concentrations of 175,35,and 0 mg·L1.The dechlorination of 4-chloropheonl is a rather complicated process,which can not be described by simple-order reaction kinetics.; 国家自然科学基金资助项目(10876016) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/35506]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 胡俊,王建龙,HU Jun,等. H_2O_2对4氯-酚辐射降解动力学的影响[J],2010, 2010. |
| APA | 胡俊,王建龙,HU Jun,&WANG Jianlong.(2010).H_2O_2对4氯-酚辐射降解动力学的影响.. |
| MLA | 胡俊,et al."H_2O_2对4氯-酚辐射降解动力学的影响".(2010). |
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