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Citation: YU Yuan-Da, GU Shu-Xiang, LUO Xiao-Jian, MA Ming, HE Ding-Sheng. Transport and Separation of Cu(Ⅱ) by N₉₀₂-Kerosene-HCl Strip dispersion Hybrid Liquid Membrane[J]. Chinese Journal of Applied Chemistry, ;2006, 23(7): 766-769. shu

Transport and Separation of Cu(Ⅱ) by N₉₀₂-Kerosene-HCl Strip dispersion Hybrid Liquid Membrane

1.
College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081

Corresponding author: HE Ding-Sheng,
Received Date: 9 August 2005
Available Online: 20 December 2005
Fund Project: 湖南省自然科学基金资助(03JJY4009) (03JJY4009)

A novel liquid membrane system,denoted as strip dispersion hybrid liquid membrane(SDHLM),containing N₉₀₂ in kerosene as carrier,was studied as the function of dodecanol concentration,pH in feed phase,volume ratio between stripping solution and organic phase,and circulating flux of feed phase or strip dispersion phase.Solvent extraction verified that 1 mol of Cu²⁺ ions reacted with 2 mol of carrier and formed 1 mol of the Cu(Ⅱ)-carrier complex.The experiments showed that Cu(Ⅱ) could be efficiently transported into the stripping solution by SDHLM.When pH=2 in the feed phase,the recovery of copper(Ⅱ) in the stripping phase was 93.6%,while iron(Ⅲ) was 1.83% for Cu²⁺/Fe³⁺=1.The recovery of copper(Ⅱ) in the stripping) phase was 89.8%,while zinc(Ⅱ) was 1.38% for Cu²⁺/Zn²⁺=1 after transport for 4 h.When the concentrations of Cu²⁺,Fe³⁺,Co²⁺,Ni²⁺ and Zn²⁺ in the feed phase(pH=1.5) were 4.52,5.07,0.442,35.7 and 1.24 g/L,respectively,the recovery of Cu²⁺ in the stripping phase was 81.5%,while other metal ions were below 2.10% after the transport for 6 h.Separation experiments indicated that N₉₀₂ was an excellent extractant for Cu(Ⅱ).SDHLM has several advantages over SLM and ELM:increased membrane stability,improved flux,improved recovery of target species concentration,no usage of high active surfactant and demulsification) device,and reduced cost.
- strip dispersion hybrid liquid membrane,
- copper,
- N₉₀₂,
- separation,
- transport
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Transport and Separation of Cu(Ⅱ) by N902-Kerosene-HCl Strip dispersion Hybrid Liquid Membrane

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Transport and Separation of Cu(Ⅱ) by N₉₀₂-Kerosene-HCl Strip dispersion Hybrid Liquid Membrane