Evaluation of N,N,N′,N′-tetraoctyl-3-oxapentane-diamide (TODGA) as a mobile carrier in remediation of nuclear waste using supported liquid membrane

The extraction of copper ions in a tubular supported liquid membrane using LIX 984NC as a mobile carrier was studied, evaluating the effect of the feed characteristics (flowrate, density, viscosity) on the feedside laminar layer of the membrane. A vertical countercurrent, double pipe perspex benchscale reactor consisting of a single hydrophobic PVDF tubular membrane mounted inside was used in all test work. The membrane was impregnated with LIX 984NC and became the support for this organic transport medium. Dilute Copper solution passed through the centre pipe and sulphuric acid as strippant passed through the shell side. Copper was successfully transported from the feedside to the stripside and from the data obtained, a relationship between Schmidt, Reynolds and Sherwood number was achieved of.

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Transport of zinc through a supported liquid membrane using di(2-ethylhexyl) phosphoric acid as a mobile carrier

Journal of Membrane Science ◽

10.1016/s0376-7388(00)82228-0 ◽

1987 ◽

Vol 31 (2-3) ◽

pp. 209-226 ◽

Cited By ~ 36

Author(s):

Ting-Chia Huang ◽

Ruey-Shin Juang

Keyword(s):

Phosphoric Acid ◽

Liquid Membrane ◽

Supported Liquid Membrane ◽

Mobile Carrier

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Rate and mechanism of divalent metal transport through supported liquid membrane containing di(2-ethylhexyl) phosphoric acid as a mobile carrier

Journal of Chemical Technology & Biotechnology ◽

10.1002/jctb.280420103 ◽

2007 ◽

Vol 42 (1) ◽

pp. 3-17 ◽

Cited By ~ 36

Author(s):

Ting-Chia Huang ◽

Ruey-Shin Juang

Keyword(s):

Phosphoric Acid ◽

Liquid Membrane ◽

Metal Transport ◽

Divalent Metal ◽

Supported Liquid Membrane ◽

Mobile Carrier

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Separation of Cd(II) and Ni(II) ions by supported liquid membrane using D2EHPA/M2EHPA as mobile carrier

Chemical Papers ◽

10.2478/s11696-013-0506-6 ◽

2014 ◽

Vol 68 (6) ◽

Cited By ~ 9

Author(s):

Roghaye Mahmoodi ◽

Toraj Mohammadi ◽

Mansoor Moghadam

Keyword(s):

Carrier Concentration ◽

Separation Factor ◽

Liquid Membrane ◽

Supported Liquid Membrane ◽

Feed Concentration ◽

Experimental Conditions ◽

Ptfe Film ◽

Mobile Carrier ◽

Maximum Value ◽

Separation Factors

AbstractThe separation of Cd(II) and Ni(II) ions was studied in an aqueous sulphate medium using supported liquid membrane (SLM). D2EHPA/M2EHPA was used as a mobile carrier, microporous hydrophobic PTFE film was used as a solid support for the liquid membrane, and the strip phase was sulphuric acid. The effects of different parameters such as feed concentration, carrier concentration, feed phase pH, and strip phase pH on the separation factor and flux of Cd(II) and Ni(II) ions were studied. The optimum values obtained to achieve the maximum flux were 5.0 for feed pH, 40 vol. % for D2EHPA/M2EHPA concentration in the membrane phase, 0.5 for strip pH, and 0.012 mass % for feed concentration. Under these optimum conditions, the flux values of Cd(II) and Ni(II) were 15.7 × 10−7 kg m−2 s−1 and 2.6 × 10−7 kg m−2 s−1, respectively. The separation factors of Cd(II) over Ni(II) were studied under different experimental conditions. At a carrier concentration of 10 vol. % and feed concentration of 0.012 mass %, the maximum value of 185.1 was obtained for the separation factor of Cd(II) over Ni(II). After 24 h, the percentages of the extracted Cd(II) and Ni(II) were 83.3 % and 0.45 %, respectively.

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