TY - JOUR
T1 - Selective transport of scandium(III) across polymer inclusion membranes with improved stability which contain an amic acid carrier
AU - Yoshida, Wataru
AU - Baba, Yuzo
AU - Kubota, Fukiko
AU - Kolev, Spas D.
AU - Goto, Masahiro
N1 - Funding Information:
This work was supported by a Grant-in Aid for Scientific Research (No. JP16K06830 ) from the Ministry of Education, Science, Sports, and Culture of Japan, the Environment Research and Technology Development Fund (ERTDF, Grant No. 3-1710 ) from the Ministry of the Environment Japan, and Open Partnership Joint Project of the Japanese Society for the Promotion of Science (JSPS, Grant No. AJ179065 (29-9111-t13)). W. Yoshida is grateful to JSPS for receiving a Research Fellowships for Young Scientists (Grant No. 17J04900 ).
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2019/2/15
Y1 - 2019/2/15
N2 - This paper reports on the development of a polymer inclusion membrane (PIM) for the selective separation of Sc(III) from other REM ions. A comparison is made of the performance of cellulose triacetate (CTA) based PIMs containing 2-thenoyltrifluoroacetone (HTTA), 2-ethylhexylphosphoric acid mono-2-ethylhexyl ester (PC-88A), N-[N,N-di(2-ethylhexyl) aminocarbonylmethyl]glycine (D2EHAG) or N-[N,N-di(2-ethylhexyl)aminocarbonylmethyl]phenylalanine (D2EHAF) as the carrier in the extraction of Sc(III) from its sulfuric acid/ammonium sulfate buffer solutions. The potential of the PIM containing D2EHAF for the selective separation of Sc(III) from a feed solution containing similar concentrations of Y(III), La(III), Nd(III), and Dy(III) into a 0.5 mol L−1 sulfuric acid receiving solution has been demonstrated. In addition, the newly developed PIM containing D2EHAF exhibited excellent stability in 5 cycles of extraction and back-extraction of Sc(III) with insignificant deterioration in its performance. The results obtained in this study indicate that the molecular structure of the carrier has a strong influence on membrane stability, and that the introduction of a phenyl group into the carrier molecule results in a significant stability improvement.
AB - This paper reports on the development of a polymer inclusion membrane (PIM) for the selective separation of Sc(III) from other REM ions. A comparison is made of the performance of cellulose triacetate (CTA) based PIMs containing 2-thenoyltrifluoroacetone (HTTA), 2-ethylhexylphosphoric acid mono-2-ethylhexyl ester (PC-88A), N-[N,N-di(2-ethylhexyl) aminocarbonylmethyl]glycine (D2EHAG) or N-[N,N-di(2-ethylhexyl)aminocarbonylmethyl]phenylalanine (D2EHAF) as the carrier in the extraction of Sc(III) from its sulfuric acid/ammonium sulfate buffer solutions. The potential of the PIM containing D2EHAF for the selective separation of Sc(III) from a feed solution containing similar concentrations of Y(III), La(III), Nd(III), and Dy(III) into a 0.5 mol L−1 sulfuric acid receiving solution has been demonstrated. In addition, the newly developed PIM containing D2EHAF exhibited excellent stability in 5 cycles of extraction and back-extraction of Sc(III) with insignificant deterioration in its performance. The results obtained in this study indicate that the molecular structure of the carrier has a strong influence on membrane stability, and that the introduction of a phenyl group into the carrier molecule results in a significant stability improvement.
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U2 - 10.1016/j.memsci.2018.11.021
DO - 10.1016/j.memsci.2018.11.021
M3 - Article
AN - SCOPUS:85056709436
VL - 572
SP - 291
EP - 299
JO - Journal of Membrane Science
JF - Journal of Membrane Science
SN - 0376-7388
ER -