| US/UV联用降解荧光增白剂CBW的研究 |
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| 引用本文： | 陈庆云,白波,赵景联.US/UV联用降解荧光增白剂CBW的研究[J].环境污染与防治,2003,25(4):203-205. |
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| 作者姓名： | 陈庆云 白波 赵景联 |
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| 作者单位： | 西安交通大学环境工程系,西安,710049 |
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| 摘 要： | 对超声波、紫外联用技术降解荧光增白剂的反应进行研究，考察了辐射时间、超声功率、pH、H2O2投加量等因素对降解效率的影响。结果表明：荧光增白剂的降解效率受辐射时间影响较大，降解过程符合拟一级反应I提高超声波的功率可提高荧光增白剂的降解率；H2O2的添加，可使溶液中的氢氧自由基的浓度增加，从而提高了荧光增白剂的降解率。在初始浓度为40mg／L，超声功率为500w、pH为9、H2O2的添加量为30mL／L、反应120min的条件下，荧光增白剂的降解率可达95％。
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| 关 键 词： | US／UV 降解 荧光增白剂CBW 超声波 废水处理 |
Ultrasonic and ultraviolet degradation of fluorescent whitening agent CBW in water |
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| Chen Qingyun,Bai Bo,Zhao Jinglian. Depart. of Environmental Engineering,Xi'an Jiaotong University,Xi'an.Ultrasonic and ultraviolet degradation of fluorescent whitening agent CBW in water[J].Environmental Pollution & Control,2003,25(4):203-205. |
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| Authors: | Chen Qingyun Bai Bo Zhao Jinglian Depart of Environmental Engineering Xi'an Jiaotong University Xi'an |
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| Institution: | Chen Qingyun,Bai Bo,Zhao Jinglian. Depart. of Environmental Engineering,Xi'an Jiaotong University,Xi'an 710049 |
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| Abstract: | The degradation of fluorescent whitening agent CBW by ultrasonic and ultraviolet method was researched. The effects of pH, irradiation time, ultrasonic power and the dosage of H-2O-2 were studied. It was found that the irradiation time had great effect on the removal rate of fluorescent whitening agent CBW, and the degradation followed a pseudo-first-order kinetic law also that the removal rate would increase as the ultrasonic power got stronger and that when the H-2O-2 was added, owing to the increasing of OH radical in solution, the removal rate would much accelerated. Under the condition of ultrasonic power=500 W, pH=9, dosage of H-2O-2=30 mL/L, initial concentration=40 mg/L, reaction time=120 min, 95% removal rate had been obtained. |
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| Keywords: | Ultrasonic Ultraviolet Degradation Fluorescent whitening agent CBW |
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