| 臭氧降解高浓度腐殖酸动力学 |
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| 引用本文： | 郑可,周少奇,杨梅梅.臭氧降解高浓度腐殖酸动力学[J].环境科学,2012,33(3):879-884. |
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| 作者姓名： | 郑可 周少奇 杨梅梅 |
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| 作者单位： | 华南理工大学环境科学与工程学院,广州 510006;华南理工大学环境科学与工程学院,广州 510006; 华南理工大学亚热带建筑科学国家重点实验室,广州 510640;华南理工大学环境科学与工程学院,广州 510006 |
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| 基金项目： | "十一五"国家科技支撑计划项目(2008BAE64B05); 广州市重大科技项目(2008DLB2080500) |
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| 摘 要： | 采用臭氧氧化法降解高浓度腐殖酸废水,并研究了臭氧对腐殖酸的降解动力学,考察了臭氧投量、初始腐殖酸浓度、初始pH和反应温度对臭氧降解高浓度腐殖酸废水的影响.结果表明,在臭氧投量为3.46 g.h-1,初始腐殖酸浓度为1 000mg.L-1,初始pH=8.0,反应温度为303 K,反应30 min的条件下,腐殖酸的去除率达到89.04%.在臭氧投量为1.52～6.01g.h-1,初始腐殖酸浓度为250～1 000 mg.L-1,初始pH为2.0～10.0,反应温度在283～323 K的范围内,臭氧降解腐殖酸符合拟一级动力学模型,通过对实验数据拟合,得到反应动力学方程,反应活化能较低(Ea=1.30×104J.mol-1),并且模型计算数值与实际数据吻合良好(平均相对误差为7.62%).
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| 关 键 词： | 臭氧 腐殖酸 动力学 氧化 羟基自由基 |
| 修稿时间： | 2011/5/31 0:00:00 |
Degradation Kinetics of Ozone Oxidation on High Concentration of Humic Substances |
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| ZHENG Ke,ZHOU Shao-qi and YANG Mei-mei.Degradation Kinetics of Ozone Oxidation on High Concentration of Humic Substances[J].Chinese Journal of Environmental Science,2012,33(3):879-884. |
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| Authors: | ZHENG Ke ZHOU Shao-qi and YANG Mei-mei |
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| Institution: | College of Environmental Science and Engineering,South China University of Technology, Guangzhou 510006, China;College of Environmental Science and Engineering,South China University of Technology, Guangzhou 510006, China; State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640, China;College of Environmental Science and Engineering,South China University of Technology, Guangzhou 510006, China |
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| Abstract: | Humic substance oxidation(HS) degradation by ozone was kinetically investigated. The effects of O3 dosage, initial pH, temperature and initial concentration of HS were studied. Under the conditions of 3.46 g·h-1 ozone dosage, 1000 mg·L-1 initial HS, 8.0 initial pH and 303 K temperature, the removal efficiencies of HS achieved 89.04% at 30 min. The empirical kinetic equation of ozonation degradation for landfill leachate under the conditions of 1.52 -6.10 g·h-1 ozone dosage, 250-1000 mg·L-1 initial HS, 2.0-10.0 initial pH,283-323 K temperature fitted well with the experimental data (average relative error is 7.62%), with low activation energy Ea=1.43×104 J·mol-1. |
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| Keywords: | ozone humic substances kinetics oxidation hydroxyl radical |
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