Treatment of 2,4,6-trinitrotoluene (TNT) red water by vacuum distillation

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• 作者：Quanlin Zhao ; Zhengfang Ye ; Mohe Zhang
• 关键词：TNT red water ; Vacuum distillation ; UV– ; vis spectroscopy ; GC/MS ; Acute toxicity test
• 刊名：Chemosphere
• 出版年：2010
• 出版时间：August 2010
• 年：2010
• 卷：80
• 期：8
• 页码：947-950
• 全文大小：327 K

文摘

2,4,6-Trinitrotoluene (TNT) red water from Chinese explosive industry was treated by vacuum distillation. The water quality before and after distillation was evaluated using high performance liquid chromatograph, UV–vis spectroscopy, Gas Chromatography/Mass Spectroscopy (GC/MS) and other physical and chemical analyses. The acute toxicity of TNT red water and its distillate was evaluated by determining the luminescence inhibition of Vibrio qinghaiensis sp. Nov. The results showed that the parameters except pH of the distillate met the criterion specified by the Chinese discharge standard for water pollutants from ordnance industry. Distillation removed chemical oxygen demand almost completely and the chrominance was reduced from 100 000° to 17°. The concentrations of 2,4-dinitrotoluene-3-sulfonate and 2,4-dinitrotoluene-5-sulfonate decreased from 20 × 10³ and 31 × 10³ mg L⁻¹ to 1.3 and 1.8 mg L⁻¹, respectively. GC/MS results showed that most of the organic components of TNT red water can be removed by distillation. The acute toxicity of water sample after distillation reduced 96 % , compared with that of unprocessed TNT red water.