金属对催化还原处理TNT废水降解产物的研究

研究了TNT及其还原产物色谱分析方法,鉴定了铜-铁金属对还原柱处理TNT废水所产生的降解产物,并对这一还原反应的机制进行了探讨.动力学研究结果表明,金属对还原柱还原TNT的反应是一级反应.

A STUDY ON TNT DEGRADATION PRODUCTS FORMED IN TNT WASTEWATER TREATMENT PROCESS WITH METALLIC COUPLE

Based on the results of GC and HPLC analysis of TNT and its reduction products, 4-amino-2, 6-dinitrotoluene (4-A), 2,4-diamino-6-nitro-toluene(2,4-DA)and 2,4,6-triaminotoluene(2,4, 6-TA) and mass spectra of 4-A, 2,4-DA, 2,4,6-TA and the derivative of 2,4,6-TA with triflu-oroacetic anhydride, TNT degradation products formed during TNT wa-stewater treatment process with a Cu-Fe metallic couple reduction column were identified. 2-amino-4,6-dinitrotoluene (2-A), 4-A, 2,4-DA, 2, 6-diamino-4-nitrotoluene (2,6-DA), 2,4,6-TA were identified from the effluent. 2,4,6-TA was found to be the main component when TNT was partially reduced and the only component when TNT was fully reduced. The results of dynamic study indicated that the reduction of TNT by the reduction column was a high rate one-order reaction.