伯胺N1923反应萃取含Cr^(6+)废水的研究

Reactive Extraction of Cr(VI) in Wastewater Using Primary Amine N1923

考察了伯胺N 1 92 3 煤油从硫酸介质中对Cr6 + 的萃取 ,萃取属络合反应机理 ,有机相中主要生成伯胺N1 92 3∶Cr =2∶1的萃合物。探讨了初始水相酸度 ,萃取剂含量 ,温度等对萃取平衡分配系数的影响。对萃取反应中出现的“第三相”问题进行了研究 ,并提出了消除的方法。

Primary amine N1923 plus kerosene is used for extracting Cr(VI) in a bench-scale experiment. The extraction undertaken in acidic solution involves reactions producing complex, i.e., (RNH3)_(2) CrO_(4). The effects of factors such as initial acidity of aqueous phase, concentration of primary amine N1923, and temperature on the distribution ratio were investigated. Problems with the occurrence of third phase were studied, the interference eliminated.