Development of a Photocatalytic Wet Scrubbing Process for Gaseous Odor Treatment
Development of a Photocatalytic Wet Scrubbing Process for Gaseous Odor Treatment
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DOI：
10.1021/ie1000295
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发表时间：
2010-03
影响因子：
4.2
通讯作者：
Tongxu Liu;Xiang-zhong Li;Fangbai Li
中科院分区：
文献类型：
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作者：
Tongxu Liu;Xiang-zhong Li;Fangbai Li
本研究以甲醇（CH 3SH）为原料制备合成恶臭气体，并开发了光催化湿式净化工艺处理此类恶臭气体的新方法。在此过程中，气态CH 3SH首先被溶液吸收，然后溶解的CH 3SH/CH 3S −被吸附到TiO 2颗粒的固体表面上，并在水相中在UV照射下被氧化。实验在不同的反应条件下进行的CH 3SH负载量，TiO 2的用量，和pH值。CH 3SH还原的反应动力学表明，反应溶液的pH值极大地影响CH 3SH的吸收率的溶液。在pH11.5时，光反应成为该体系中的RDS。实验表明，两种甲基硫传感器测定的CH 3SH降解效率和嗅觉测量法测定的恶臭去除率可以很好地保持。
In this study, methyl mercaptan (CH3SH) gas was used to prepare synthetic odorous gases, and a photocatalytic wet scrubbing process as a new approach was developed for treating such odorous gases. In this process, gaseous CH3SH is first absorbed by the solution, and the dissolved CH3SH/CH3S− is then adsorbed onto the solid surface of TiO2 particles and oxidized under UV illumination in the aqueous phase. Experiments were conducted under different reaction conditions of CH3SH loading, TiO2 dosage, and pH. The reaction kinetics of CH3SH reduction indicates that the pH of the reaction solution greatly influences the rate of CH3SH absorption by the solution. At pH 11.5, the photoreaction becomes the RDS in such a system. The experiments demonstrated that the efficiency of CH3SH degradation determined by two methyl mercaptan sensors and the ratio of odor removal determined by olfactometry measurements can be well maint...