利用Fe(0)-EDTA-空气在温和条件下降解模拟染料废水的研究  

Degradation of dye waste water by zero valent iron and EDTA under mild reaction conditions

作　　者：高锦章[1] 王宇晶[1] 王爱香[1] 王友娣[1] 李岩[1] 

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2009年第2期54-57,共4页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(20475044);中乌科技合作基金资助项目(043-05);西北师范大学科技创新工程资助项目(KJCXGC-01)

摘　　要：研究了绿色湿法氧化技术——Fe(0)-EDTA-空气(ZEA)降解染料废水的过程,考察了不同影响因素如染料的初始浓度、反应温度和溶液的酸度对染料降解的影响,用紫外可见吸收光谱检测了染料的降解过程.结果表明,Fe(0)-EDTA混合物在室温常压下,能够活化空气中的氧分子,进而使染料快速降解,升高温度和增加溶液酸度均能提高降解率.同时,简要讨论了该体系的降解机理.This paper describes a green wet-oxidation process for the degradation of waste water containing dye stuffs. Various influencing factors such as the initial concentration of dye, the temperature, and the pH are examined. Ultraviolet （UV） absorption is used to monitor the degradation process. The results show the dye rapidly undergoes degradation just using air as the oxidant under room temperature and atmosphere pressure. The temperature enhances the degradation process. Also, the buffer with a lower pH is critical to improve the reaction rate. The mechanism of the degradation of the dye is also discussed.

关 键 词：染料 废水处理 降解 绿色氧化 

分 类 号：X502[环境科学与工程—环境工程]