UV/O3法降解乙酸的影响因素

• 环境科学 • 上一篇

UV/O₃法降解乙酸的影响因素

康春莉, 唐晓剑, 郭平, 郭晶, 于宏兵

吉林大学环境与资源学院, 长春 130012

收稿日期:2007-06-15 修回日期:1900-01-01 出版日期:2008-01-26 发布日期:2008-01-26
通讯作者: 康春莉

Influencing Factors of Photodegradation of Acetic Acid by UV/O3 Processes

KANG Chunli, TANG Xiaojian, GUO Ping, GUO Jing, YU Hongbing

College of Environment and Resources, Jilin University, Changchun 130012, China

Received:2007-06-15 Revised:1900-01-01 Online:2008-01-26 Published:2008-01-26
Contact: KANG Chunli

摘要/Abstract

摘要： 利用UV/O₃法对糠醛废水中的乙酸进行光氧化降解实验. 讨论了pH值、光源、阴阳离子等因素对乙酸降解速率的影响. 结果表明, 以高压汞灯 (400 W)为光源, 对500 mL浓度为8 mmol/L的乙酸溶液, 在温度为(35±2) ℃、 O₃含量为 0.1 mg/L， pH值为2.2的条件下, 乙酸降解效果最佳. 在此条件下, 300 min内溶液中乙酸和TOC降解率分别为86%和74%. 在所考察浓度范围内, 乙酸的降解符合零级动力学模式.

关键词: UV/O₃, 乙酸, 糠醛废水, 光降解

Abstract: Acetic acid is the most important component of furfural wastewater, which was degraded by UV/O₃ method. Effects of pH value, light intensity and negative and positive ions on the reaction were investigated. The results show the optimal conditions of the photodegradation reaction of 500 mL of 8 mmol/L acetic acid were pH=2.2, the temperature was (35±2) ℃ and the supply of O₃ was 0.1 mg/L under 400 W ultraviolet radiation. Under those conditions, the disposal rates of acetic acid and TOC reached 86% and 74% within 300 min. The degradation course obeys the zero order kinetic equation.

Key words: UV/O₃, acetic acid, furfural wastewater, photodegradation

中图分类号:

X132

康春莉, 唐晓剑, 郭平, 郭晶, 于宏兵. UV/O₃法降解乙酸的影响因素[J]. J4, 2008, 46(01): 162-165.

KANG Chunli, TANG Xiaojian, GUO Ping, GUO Jing, YU Hongbing. Influencing Factors of Photodegradation of Acetic Acid by UV/O3 Processes[J]. J4, 2008, 46(01): 162-165.

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UV/O₃法降解乙酸的影响因素

Influencing Factors of Photodegradation of Acetic Acid by UV/O3 Processes

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