溶剂气浮法分离水中的Zn离子的研究

Removal of zinc ions from an aqueous solution by solvent sublation

以双硫腙为配体,溴化十六烷基三甲基铵(CTAB)为表面活性剂。对Zn离子在无机相中形成的Zn-双硫腙-CTAB体系的溶剂气浮进行了研究。研究表明表面活性剂与Zn离子的物质的量之比为5∶1,约1 h水中的锌离子去除率可达98%。0.5 mol/L NaCl大大提高体系的溶剂气浮的去除率,溶剂气浮的速率随着气流速率的增加而增加,共存溶质乙醇存在会使去除率降低,有机溶剂的量对溶剂气浮影响较小,溶剂气浮过程遵从假一级动力学。考察了不同温度下溶剂气浮的回收速率,计算了该过程中的气浮表观活化能为9.037 kJ/mol。

Zn-Dithizone complex was removed from an aqueous solution by solvent sublation of Zn-Dithizone-Cetyltrimethyl ammonium bmmide（CTAB） （sublate） into 2-octanol, and 98% Zn^2＋ was removed from the aqueous solution. Many chemical and physical parameters were discussed. The solvent sublation process followed first order kinetics. A characteristic parameter, apparent activation energy of the sublation, was estimated to be 9.037 kJ/moL.