Analysis of Extraction of Cu(II) by Strip Dispersion Hybrid Liquid Membrane (SDHLM) using PMBP as Carrier

作者：Gu, Shuxiang; He, Dingsheng^*; Ma, Ming

来源：Solvent Extraction and Ion Exchange, 2009, 27(4): 513-535.

DOI：10.1080/07366290902967041

• Strip dispersion hybrid liquid membrane
• copper ions
• zinc ions
• thixotropy
• 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5

A liquid membrane system, denoted a strip dispersion hybrid liquid membrane (SDHLM) containing 1-phenyl-3-methyl-4-benzoyl-pyrazolone -5 as carrier in xylene, was reported for the transport and separation of Cu(II) from Zn (II) ions. The effects of various factors on the transport of copper(II) ions through SDHLM were systematically investigated by orthogonal tests. The optimum transport conditions of copper ions were summarized. In the overall mass transfer process the mass transfer resistance due to the aqueous boundary layer diffusion and diffusion in the microporous membrane is dominant. The accumulation of the Cu(II)-carrier coordination compound in the membrane shows that the transfer in SDHLM possesses the characteristic of nonequlibrium mass transfer in this study. The rheologic experiments verified that the organic phase in the SDHLM system was the non-Newtonian fluid and the organic phase after transport of 6hr was a system of thixotropy in our experimental conditions. The lag ring experiments proved that the thixotropy of the organic phase in the SDHLM system was relevant to the composition of the membrane. In the experimental comparison of two types of liquid membrane, SDHLM has superiority over SLM in respect of transport flux, permeability coefficient, recovery percentage or concentration of solute in the stripping solution, efficiency of uphill transport, loss of membrane solution, and the separation efficiency of the membrane.

• 出版日期2009
• 单位湖南师范大学