TOPO를 담체로 함유한 CTA막에 의한 우라늄이온의 전달

강영호; 최근식; 권선길; 황성태; 장인순; 전해수

Polymer(Korea), Vol.16, No.4, 383-388, July, 1992

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TOPO를 담체로 함유한 CTA막에 의한 우라늄이온의 전달

Transport of Uranium ion through Cellulose Triacetate membrane containing Tri-n-octylphosphine oxide

강영호, 최근식, 권선길, 황성태, 장인순, 전해수

초록

질산우라늄이 TOPO를 담체로 함유하는 cellulose triacetate막을 통과하는 전 달량을 측정하였다. 실험에서 사용한 막은 상전환법으로 제조되었으며, TOPO는 이 막안에 물리적으로 갖혀있다. 투과량을 지배하는 주요한 요인은 가소제의 양, CTA-TOPO의 혼합비, 용액중 우라늄이온의 농도, 산도 및 용액의 온도등 이었다. 이온이 막을 통과하는 현상을 SEM에 의한 미세조직 관찰을 통하여 분석하였다. 또한, TOPO를 담체로 사용하면 막의 안정성이 향상되는 결과를 얻었다.

The flux of uranyl nitrate across cellulose triacetate membrane using TOPO as a carrier was determined. TOPO particles were physically entrapped in the membrane, which was prepared by phase inversion method. The dominating factors for flux were the amount of plasticizer, CTA-TOPO ratio in the membrane, uranium concentration in the feed solution, acidity, and the solution temperature. And the transport phenomena of uranyl nitrate across these membranes were microscopically analysed by SEM. The increase of tile membrane stability was observed when TOPO was used as a carrier.

[References]

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[1] Meritt RC, "The Extractive Metallurgy of Uranium," p. 182, USAEC (1971)

[2] Clegg JW, Foley DD, "Uranium ore Processing," p. 237, Addison-Wesley, Pub., Co. (1958)

[3] Li NN, U.S. Patent, 3,410,794 (1968)

[4] Li NN, AIChE J., 17, 459 (1971)

[5] Li NN, Ind. Eng. Chem. Process Des. Dev., 10, 215 (1971)

[6] Cussler EL, AIChE J., 17(6), 1300 (1971)

[7] Cussler EL, AIChE J., 26(1), 430 (1980)

[8] Matsuoka H, J. Membr. Sci., 7, 11 (1980)

[9] Petranek J, U.S. Patent, 4,379,041 (1983)

[10] Sugiura M, Sep. Sci. Technol., 22(11), 2263 (1987)

[11] Sugiura M, Kikkawa M, J. Membr. Sci., 42, 47 (1989)

[12] Babcok WC, J. Membr. Sci., 7, 71 (1980)

[13] Sato T, J. Inorg. Nucl. Chem., 24, 699 (1962)

[14] Kiwan AM, Amin RS, J. Inorg. Nucl. Chem., 35, 3315 (1973)

[15] Deen WM, AIChE J., 33(9), 1409 (1987)

[16] Heyn AHA, Soman YD, J. Inorg. Nucl. Chem., 26, 287 (1964)

[17] Marcus Y, Kertes AS, "Ion Exchange and Solvent Extraction of Metal," Complexes, Chap. 9, p. 647, Wiley-Interscience (1969)

[18] "Synthetic Membranes: Science, Engineering and Applications," edited by P.M. Bungay et al, D. Reidel Pub. Co. (1986)

[19] Spriggs HD, Gainer TL, Ind. Eng. Chem. Fundam., 12(3), 291 (1973)