caa a22 4500 378867547 CHVBK 20180305123401.0 cr unu---uuuuu 161128e20030401xx s 000 0 eng 10.1524/ract.91.4.217.19965 doi (NATIONALLICENCE)gruyter-10.1524/ract.91.4.217.19965 Multitracer studies on the permeation of rare earth elements through a supported liquid membrane containing 2-ethylhexyl phosphonic acid-2-ethylhexyl ester (EHEHPA) [Elektronische Daten] [Shizuko Ambe, Daisuke Abe, Takuo Ozaki, Fumitoshi Ambe] The simultaneous permeation of Sc, Y, Ce, Pm, Eu, Gd, Yb and Lu through a 2-ethylhexyl phosphonic acid-2-ethylhexyl ester (EHEHPA)-decalin membrane supported on a microporous polytetrafluoroethylene sheet was studied using a multitracer. The permeation rates of the elements from feed solutions of various acidity into receiving solutions of 2mol dm-3 HCl were determined. The feed solution at pH 1.5 gave the highest percentage of permeation for Ce, Pm, Eu, Gd and Yb, amounting to about 90 after -25h permeation. The percentage of permeation of Y and Lu was the highest at pH 1, amounting to about 90 after -25h permeation. The permeation of Sc from all the feed solutions was less than 4 due to its adsorption on the vessel. The permeation from the feed solution at pH 1.5 into the receiving solutions of 1, 2, 3, 4 and 5mol dm-3 HCl showed that the maximum percentage of transport for Y and Yb was obtained in 2mol dm-3 HCl receiving solution and that for Lu in 2-4mol dm-3 HCl receiving solutions. The other elements gave a percentage of transport more than 90 in 1-5mol dm-3 HCl receiving solutions, showing no obvious HCl concentration effect. The permeability coefficients of these elements were determined. Solvent extraction of the elements by EHEHPA-decalin was also carried out for comparison. © 2003 Oldenbourg Wissenschaftsverlag GmbH Laboratory techniques, experiments nationallicence Analytical chemistry nationallicence Inorganic chemistry nationallicence Ambe Shizuko aut Abe Daisuke aut Ozaki Takuo aut Ambe Fumitoshi aut Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 91/4/2003(2003-04-01), 217-222 0033-8230 91:4/2003<217 2003 91 ract https://doi.org/10.1524/ract.91.4.217.19965 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/ract.91.4.217.19965 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ambe Shizuko aut NATIONALLICENCE 700 1- Abe Daisuke aut NATIONALLICENCE 700 1- Ozaki Takuo aut NATIONALLICENCE 700 1- Ambe Fumitoshi aut NATIONALLICENCE 773 0- Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 91/4/2003(2003-04-01), 217-222 0033-8230 91:4/2003<217 2003 91 ract CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter