標題: Decomposition of 2-mercaptothiazoline in aqueous solution by ozonation
作者: Chen, YH
Chang, CY
Chen, CC
Chiu, CY
Yu, YH
Chiang, PC
Ku, Y
Chen, JN
Chang, CF
環境工程研究所
Institute of Environmental Engineering
關鍵字: ozone;2-mercaptothiazoline;sulfate;total organic carbon;water treatment
公開日期: 1-Jul-2004
摘要: This study investigates the ozonation of 2-mercaptothiazoline (2-MT). The 2-MT is one of the important organic additives for the electroplating solution of the printed wiring board industry and has been widely used as a corrosion inhibitor in many industrial processes. It is of concern for the aquatic pollution control especially in the wastewaters. Semibatch ozonation experiments in the completely stirred tank reactor are performed under various concentrations of input ozone. The concentrations of 2-MT, sulfate, and ammonium are analyzed at specified time intervals to elucidate the decomposition of 2-MT during the ozonation. In addition, the time variation of the dissolved ozone concentration (C-ALb) is continuously monitored in the course of experiments. Total organic carbon (TOC) is chosen and measured as a mineralization index of the ozonation of 2-MT. The results indicate that the decomposition of 2-MT is efficient, while the mineralization of TOC is limited via the ozonation only. Simultaneously, the yield of sulfate with the maximum value of about 47% is characterized by the increases of TOC removal and ozone consumption. These results can provide some useful information for assessing the feasibility of the treatment of 2-MT in the aqueous solution by the ozonation. (C) 2004 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.chemosphere.2004.02.001
http://hdl.handle.net/11536/26584
ISSN: 0045-6535
DOI: 10.1016/j.chemosphere.2004.02.001
期刊: CHEMOSPHERE
Volume: 56
Issue: 2
起始頁: 133
結束頁: 140
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