NaOH体系乳状液膜法提取镍的机理研究  

Raman spectroscopy of the emulsion liquid membrane process of Span 80-TBP-NaOH

作　　者：姜承志[1] 孙许可 李飞飞[1] 卢旭东[2] 

机构地区：[1]沈阳理工大学环境与化学工程学院,沈阳110159 [2]沈阳理工大学装备工程学院,沈阳110159

出　　处：《功能材料》2015年第B12期68-72,共5页Journal of Functional Materials

基　　金：辽宁省教育厅资助项目(L2013088);辽宁省科技厅科学事业公益研究基金资助项目(2013003010)

摘　　要：以NaOH作为内水相沉淀剂、Span80为表面活性剂、磷酸三丁酯(TBP)为流动载体、液体石蜡为膜增强剂、煤油为膜溶剂,采用乳状液膜技术提取溶液中的镍。采用微分研究Span80-TBP-NaOH体系乳状液膜传输镍的反应动力学过程,采用拉曼光谱研究Span80-TBP-NaOH体系乳状液膜膜内反应。结果表明,Span80-TBP-NaOH体系为一级扩散控制过程;比较提取镍前、后乳液的光谱图,证明了膜内反应的发生,比较破乳后油相与原始油相的拉曼光谱,表明油相可以重复利用。The extraction and concentration of nickel（ Ⅱ ） from aqueous solutions by emulsion liquid membranes （ELMs） using NaOH as precipitator in the internal phase has been investigated in this research. The emulsion liquid membrane consists of a surfactant （Span80） ,a mobile carrier （TBP）, a film strengthening agent（paraf fin） ,and a diluent （kerosene）. Dynamics process of Ni2＋ transferring by the ELM was studied using differential method. The membrane reactions were studied by Raman spectrum. The results showed that the time series and the concentration series was equal to be 1. Which shows that the reaction is diffusion-controlled reaction process. Comparing the emulsion spectrogram before the separation with the emulsion spectrogram after the separation, the reaction product in the membrane was pointed out. Contrasted the original oil spectrogram and the spectro- gram of the oil after demulsification, which showed that the oil phase can be reused preliminary.

关 键 词：乳状液膜 膜内反应 拉曼光谱 镍 

分 类 号：O614.8[理学—无机化学]