Oxidation of methyl methacrylate from semiconductor wastewater by O3 and O3/UV processes

被引：21
|
作者：
Shang, Neng-Chou
Chen, Yi-Hung
Ma, Hwong-Wen
Lee, Chi-Wei
Chang, Cheng-Hsin
Yu, Yue-Hwa
Lee, Chien-Hsien
机构：
[1] Natl Taiwan Univ, Grad Inst Environm Engn, Taipei 106, Taiwan
[2] Natl Kaohsiung Univ Appl Sci, Dept Chem & Mat Engn, Kaohsiung, Taiwan
[3] Tamkang Univ, Dept Civil Engn, Tamsui, Taipei, Taiwan
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2007年 / 147卷 / 1-2期
关键词：
ozone; UV radiation; methyl methacrylate; ozonation; semiconductor;
D O I：
10.1016/j.jhazmat.2007.01.004
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study investigated the oxidation of methyl methacrylate (MMA) by sole ozonation and ozone/UV treatments. The semi-batch ozonation experiments were proceeded under different reaction conditions to study the effects of ozone dosage and UV radiation on the oxidation of MMA. The experimental results indicated that both the oxidation of MMA by the sole ozonation and O-3/UV processes can completely decompose MMA to form the following intermediates within 30 min reaction time. To increase the applied ozone dosage can significantly raise the removal efficiency of MMA. However, the mineralization of MMA via the direct oxidation reaction of molecular ozone was slow, while introducing the UV radiation can promote the mineralization rate of MMA. In addition, the pH value of the oxidized solution in the O-3/UV treatment decreased lower than that in the sole ozonation treatment of about 1 unit. The possible scheme of the decomposition pathway of MMA under the ozonation process is proposed in this study. Formic acid and acetic acid were found to be the main ozonated intermediates. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：307 / 312
页数：6
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