The High Temperature Treatment of Trinitrotoluene (TNT) and Cyclotrimethylene-Trinitramine (RDX) with Ozone and Ultrasound
作者:
Raymond A. Sierka, Ph.D., P.E. Professor,
期刊:
Ozone: Science & Engineering
(Taylor Available online 1984)
卷期:
Volume 6,
issue 4
页码: 275-290
ISSN:0191-9512
年代: 1984
DOI:10.1080/01919518408551032
出版商: Taylor & Francis Group
关键词: ozone;ultrasound;munitions wastewaters;trinitrotoluene;cyclotrimethylene-trinitramine
数据来源: Taylor
摘要:
This paper summarizes the results of research on the treatment of synthetically prepared aqueous solutions of trinitrotoluene (TNT) and cyclotrimethylene–trinitramine (RDX) in the weight ratio 70%/30% representing a typical munitions wastewater, by a combination of ozone and ultrasound. A parametric study investigated the relationship among the variables: (1) initial solution pH (5.84 → 10.0); (2) ultrasound power level (5 → 50 watts at 852.0 to 863.0 kHz);(3) ultrasound frequency level (60.6 → 1,007.0 kHz); (4) solution concentration (70/30 mg/l TNT/RDX solutions volumetrically diluted with distilled water in the ratios 1/0, 1/1, 1/3); (5) reaction temperature (25 → 59°C). Removal rates of both TNT and TOC increased directly with increases in reaction temperature and initial solution pH. Likewise, increased sound power level produced enhanced system kinetic responses; however, these were attributed to reaction mass temperature increases. Ultrasound was found to inhibit reaction kinetics at high temperatures and pH because it promoted radical–radical extinguishment reaction.
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