| pH对过一硫酸氢盐湿法氧化去除甲硫醇恶臭气体的影响 |
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| 引用本文： | 杨世迎,冯琳玉,王雷雷,霍梅青,李妍.pH对过一硫酸氢盐湿法氧化去除甲硫醇恶臭气体的影响[J].环境科学学报,2014,34(12):3138-3143. |
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| 作者姓名： | 杨世迎 冯琳玉 王雷雷 霍梅青 李妍 |
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| 作者单位： | 海洋环境与生态教育部重点实验室;中国海洋大学环境科学与工程学院; |
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| 基金项目： | 国家自然科学基金(No.21107101)~~ |
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| 摘 要： | 以过一硫酸氢盐(PMS)作为氧化剂,利用化学吸收氧化法去除甲硫醇(CH3SH)恶臭气体.研究了p H(2~13)对CH3SH吸收过程、PMS氧化降解CH3SH过程的影响.结果表明,PMS不同于H2O2,在p H小于CH3SH p Ka(10.3)的弱碱性条件(p H=8~10)下,也可以有效去除CH3SH,而此时H2O2对CH3SH没有去除效果.可能的原因是,在弱碱性条件(p H=8~10)下PMS或可能产生的活性物种在气液相界面直接快速氧化CH3SH分子.
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| 关 键 词： | 过一硫酸氢盐 甲硫醇 湿法化学吸收 弱碱性条件 氧化 |
| 收稿时间： | 2014/2/26 0:00:00 |
| 修稿时间： | 2014/4/12 0:00:00 |
Influence of pH on wet scrubbing oxidation of methyl mercaptan by peroxymonosulfate |
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| YANG Shiying,FENG Linyu,WANG Leilei,HUO Meiqing and LI Yan.Influence of pH on wet scrubbing oxidation of methyl mercaptan by peroxymonosulfate[J].Acta Scientiae Circumstantiae,2014,34(12):3138-3143. |
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| Authors: | YANG Shiying FENG Linyu WANG Leilei HUO Meiqing and LI Yan |
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| Institution: | 1. Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao 266100;2. College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100;College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100;College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100;College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100;College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100 |
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| Abstract: | Peroxymonosulfate (PMS) is a strong oxidant that can be used in removing methyl mercaptan (CH3SH) in a wet scrubber. The influences of pH (2~13) on CH3SH absorption and degradation were different between H2O2 and PMS. Under weakly alkaline conditions (pH=8~10), CH3SH removal by H2O2 wet oxidation was poor. It was interesting that PMS can remove more than 50 percent of CH3SH in weakly alkaline liquid (pH=8~10) which was lower than the pKa of CH3SH (10.3). The possible reason is that PMS or active species can quickly oxidize CH3SH molecules at gas-liquid interface. |
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| Keywords: | peroxymonosulfate methyl mercaptan wet chemical scrubbing weakly alkaline conditions oxidation |
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