辐射技术用于染料废水的脱色与降解  

Radiation decoloration and degradation of dye wastewater

作　　者：宋鹏程[1] 陆书玉 罗丽娟 

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]上海市辐射环境监督站,上海200065

出　　处：《核技术》2011年第11期815-822,共8页Nuclear Techniques

摘　　要：详细阐述了染料废水辐射降解的机理、影响因素和工程应用,为后续研究和工业应用提供参考。经辐照过的染料溶液所产生的·OH、eaq–和H·具有很高的活性,可以和染料分子发生氧化和还原反应,使"–N=N–"和"–C=C–"断裂。·OH为强氧化剂,可以直接氧化染料分子并将其降解。eaq–是强还原剂,可迅速脱去染料的颜色,但对脱色产物的进一步降解作用不大,染料分子的最终的降解主要依靠·OH的氧化作用。另外,辐照剂量、pH值、含氧量、H2O2的投加方式、氧化还原条件、溶液中离子和染料分子种类等也会影响染料废水的辐射降解效率。染料废水的最终降解主要取决于染料分子的结构和辐照剂量,向染料废水中适当添加H2O2对降解起到协同作用。In this paper, we give a review on radiation degradation of dyes wastewater. The mechanisms, influencing factors and engineering applications are described in detail. Irradiated dye solution products .OH, eaq- and Ho which have very high activity to react with dye molecules, making ＂-N=N-＂ and ＂-C=C-＂ brand fractured. ·OH is a strong oxidant and can oxidize dye molecules, eaq- is a very strong reducing agent and effective decolorant, but it is less active in further degradation of the products formed. Among the influential factors of the radiation dose, pH value, oxygen level, addition of H2O2, oxidation and reduction conditions, ion species and dye molecules in solution, the ultimate degradation of dye wastewater mainly depends on structure of dye molecules and radiation dose, adding H2O2 to dye wastewater appropriately play a synergistic effect on the degradation.

关 键 词：辐射降解 染料废水 脱色 机理 

分 类 号：X788[环境科学与工程—环境工程]