摘要
直接铜盐蓝2R具有典型的染料分子所具备的偶氮键发色基团及羟基、氨基等助色基团。实验以活性氧化铝为载体硝酸铜溶液为前躯体,通过浸渍焙烧法制得催化性能良好的CuO/γ-Al2O3颗粒,以此作为三维电极体系内填充粒子。通过自制三维电极反应器采用间歇的实验方式处理不同浓度的直接铜盐蓝2R染料废水,对反应后废水进行UV-Vis,FTIR,COD,氨氮和色度测定以反映处理效果。FTIR前后对比结果表明,反应使得苯环和萘环上的C-N断裂,形成了磺酸基和羟基1,4取代的萘环结构,偶氮结构连接的苯环醚的中间产物。UV-Vis结果显示反应后的溶液紫外特征吸收峰消失,表明体系对该染料脱色效果明显。
Direct copper blue 2R has the typical chromophoric group of dye such as azo linkage and auxochrome group such as hydroxy and amino. Electrocatalytic oxidation of direct copper blue 2R was investigated in the presence of copper oxide supported on γ-Al2O3 as particle electrodes which was made by method of Impregnation Calcination. The particles were filled in the three-dimensional electrode system. Batch-type study was carried on the homemade reactor to degradation kinds of concentration. The FTIR results indicated the C-N bond of benzene ring and naphthalene nucleus was broken, which formed intermediate products structure of Naphthalene ring 1, 4 replaced by sulfonic acid group and hydroxy connected the azo. The UV-Vis results indicated the characteristics of ultraviolet absorption peak of organics disappeared which meant dyes decolorizing effect of this system was obvious.
出处
《环境科技》
2014年第3期15-19,共5页
Environmental Science and Technology
关键词
电催化氧化
粒子电极
料废水
直接铜盐蓝2R
Electrocatalytic oxidation
Particle electrode
Dye wastewater
Direct copper blue 2R
