废水溶液中金属离子对O_3/H_2O_2氧化TNT能力的影响  

Effects of Metal Ions on the TNT Degradation with O_3/H_2O_2

作　　者：吴耀国[1] 赵晨辉[1] 王秋华[1] 冯文璐[1] 

机构地区：[1]西北工业大学应用化学系,陕西西安710072

出　　处：《含能材料》2007年第2期181-184,共4页Chinese Journal of Energetic Materials

基　　金：2004-2005西北工业大学本科毕业设计(论文)重点扶持项目;西北工业大学研究生创业种子基金资助(Z200669)

摘　　要：结合实际TNT废水的水质状况,以Cu(Ⅱ)、Mn(Ⅱ)、Fe(Ⅱ)、Fe(Ⅲ)及Al(Ⅲ)等为代表,以TNT去除率及反应动力学常数为评价指标,实验研究了金属离子对O3/H2O2降解TNT功效的影响。结果表明,金属离子对O3/H2O2去除TNT功效受控于金属的种类及浓度:Cu(Ⅱ)具有抑制作用;Mn(Ⅱ)浓度较低时,具有促进作用,浓度较高时则具有抑制作用;Fe(Ⅱ)与Fe(Ⅲ)浓度较低时,具有抑制作用,浓度较高时则具有促进作用;Al(Ⅲ)具有微弱的促进作用。分析认为,尽管Cu(Ⅱ)、Fe(Ⅱ)、Fe(Ⅲ)及Mn(Ⅱ)等都对去除TNT产生抑制作用,但前三者主要影响.OH的形成,而后者则影响.OH的寿命。Abstract： The metals ions of wastewater including Cu（ Ⅱ ） ,Mn（ Ⅱ ） , Fe（ Ⅱ ） , Fe（Ⅲ） and AI（Ⅲ） were selected as representatives, and the experiments were carried out to assess the effects of metal ions on TNT-removal by O3/H2O2 in the wastewater. The experimental results showed that effects of metal ion on the TNT degradation with O3/H202 depend on the metal types and their con- centrations in the wastewater. Cu^2＋ suppresses the degradation. Mn^2＋ with a low concentration enhances the degradation, but suppresses the degradation with high concentration. The effects of Fe^2＋ and Fe^3＋ are opposite to that of Mn^2＋ , and they enhance the degradation with low concentration and inhibit it with high concentration. Al^3＋ has a small potential to improve the degradation. Cu（ Ⅱ ）, Fe（ Ⅱ ）, Fe（ Ⅲ） inhibit the TNT-degradation by O3/H202 by blocking forming of hydroxyl radicals, and Mn（ Ⅱ） does that by shorting the hydroxyl radical age.

关 键 词：应用化学 TNT炸药废水 O3 /H2O3法 金属离子 去除率 

分 类 号：O614.121[理学—无机化学]