摘要
在对活性、酸性和碱性等 1 0种水溶性染料水样絮凝脱色和平衡渗析实验数据进行分析的基础上 ,初步探讨了染料结构与其絮凝脱色率之间的定性关系。PAN -DCD絮凝剂对 1 0种染料的最佳脱色pH范围 <5,尤其在pH值 <4更佳。在最佳pH条件下 ,絮凝剂加入量增加 ,脱色率升高。染料分子上磺酸基数目多者脱色效果好 ,分子中疏水性基团大则脱色率高 ,含蒽醌环的染料脱色率大于萘环者 ,也大于含苯环者。
Based on the experimental data of flocculating decolorization of ten water soluble dyes including reactive, acid and base dyes and that of equilibrium dialysis, the qualitative relationship between dyes structure and the efficiency of dyes flocculating decolorization was investigated. The results showed that the pH range of the optimum decolorization of these dyes by PAN-DCD is below 5. Under the condition of optimum pH, the flocculating decolorization efficiency increases with increasing the dose of PAN-DCD. When there are more sulfonic acid groups , more hydrophobic groups and bigger hydrophobic ones in the dyes structure, the flocculating decolorization efficiency of the dyes becomes higher.
出处
《城市环境与城市生态》
CAS
CSSCI
CSCD
2000年第1期16-19,共4页
Urban Environment & Urban Ecology
关键词
染料结构
絮凝
脱色
废水处理
dyes structure
flocculating decolorizaiton efficiency
hydrophobic interaction
chemical interaction
