Solubility of Rare Earth Oxalate in Oxalic and Nitric Acid Media

Dong-Yong Chung; Eung-Ho Kim; Eil-Hee Lee; Jae-Hyung Yoo

Journal of Industrial and Engineering Chemistry, Vol.4, No.4, 277-284, December, 1998

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Solubility of Rare Earth Oxalate in Oxalic and Nitric Acid Media

Dong-Yong Chung^†, Eung-Ho Kim, Eil-Hee Lee , and Jae-Hyung Yoo

Korea Atomic Energy Research Institute, Taejon 305-600, Korea

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The solubilities of rare earth(Y, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, and Yb) oxalates were measured in nitric acid and oxalic acid media. The concentration of rare earth in the filtrate obtained after oxalate precipitation was determined by ICP-AES. The experiment revealed that the solubilities decreased as the oxalic acid concentration increased and the nitric acid concentration decreased. Based on the assumption that rare earth ions can react with oxalate ion to form RE(C₂O₄) _n^3-2n(n = 1,2,3) complex, we have proposed a solubility model of rare earth oxalate. The oxalic acid concentration, the hydrogen ion concentration, and the ionic strength were calculated from the stoichiometric material balances of chemicals in the precipitation reaction. The activity coefficients of ions were also calculated by the modified Debye-Huckel equation. Within the experimental range of oxalate ion activity 1 X 10^-8 M to 1 X 10 ^-5 M, solubility products K_sp and equilibrium constants β₁ for rare earth oxalates were obtained.

Keywords:Solubility;Rare Earth Oxalate;Oxalic Acid;Nitric Acid

[References]

Forsberg CW, ORNL/TM-6445, Oak Ridge National Laboratory (1980)
Campbell DO, Buxton SR, U.S. Patent, 4,025,602 (1977)
Mousty F, Toussaint J, Godfrin J, Girardi F, Proceedings of the 1st Technical Meeting of the Nuclear Transmutation of Actinides, Ispra 16-18 March p. 163-173, EUR-5897 (1977)
Godfrin J, Mousty F, Planson J, Toussaint J, Proceedings of the 2st Technical Meeting of the Nuclear Transmutation of Actinides, Ispra 21-24 April p. 225, EUR-6929 (1977)
Yost DM, Rusell H, Garner CS, The Rare-Earch Elements and Their Compounds, p. 59, John Wiley and Sons, New York (1947)
Hauser O, Wirth F, Anal. Chem., 47, 389 (1908)
Hauser O, Wirth F, Prakt. Chem., 79, 358 (1909)
Wirth F, Anorg. Chem., 58, 213 (1908)
Wirth F, Anorg. Chem., 76, 174 (1912)
Rimbach E, Schubert A, Physik. Chem., 67, 183 (1909)
Sarver LA, Brinton HMP, J. Am. Chem. Soc., 49, 943 (1927)
Crouthamel CE, Martin DS, J. Am. Chem. Soc., 72, 1382 (1950)
Crouthamel CE, Martin DS, J. Am. Chem. Soc., 73, 569 (1951)
Feibush AM, Rowley K, Gordon L, Anal. Chem., 30, 1610 (1958)
Chang TP, DP-1723, Savannah River Laboratory (1987)
Stanislav K, Ladislav S, Handbook of Chemical Equilibria in Analytical Chemistry, p. 154, John Wiley & Sons, New York (1985)
Debye P, Huckel E, Physik. Z., 24, 185 (1923)
Kielland J, J. Am. Chem. Soc., 59, 1675 (1937)
Guggenheim EA, Phil. Mag., 19, 588 (1935)
Davies CW, J. Am. Chem. Soc., 58, 2093 (1938)
Davies CW, Ion Assoc., Butterworths, London (1962)
Bromley LA, AIChE J., 19, 313 (1973)
Wu YC, Hamer WJ, N.B.S. 10002 (1969)
Robinson RA, Stokes RH, Electrolyte Solutions, 2nd ed., Butterworths, London (1959)
Pitzer KS, J. Chem. Soc.-Faraday Trans., 68, 101 (1972)
Meissner HP, Tester JW, Ind. Eng. Chem. Process Des. Dev., 11, 128 (1972)
Cotton FA, Wilkinson G, Advanced Inorganic Chemistry, 5th Ed., p. 955, John Wiley & Sons, New York (1988)
Trotman-Dickenson AF, Comprehensive Inorganic Chemistry; volume 4, Lanthanide, Transition Metal Compounds, p. 6, Pergamon Press, Oxford (1976)
Molter T, The Chemistry of the Lanthanides, p. 20, Reinhold Book Corporation, New York (1963)
Manning PG, Can. J. Chem., 44, 1945 (1966)
Yatsimirskii KB, Zyukov YA, Russ. J. Inorg. Chem., 7, 1583 (1962)

[Referenced By]

[Related Articles]

[1] Forsberg CW, ORNL/TM-6445, Oak Ridge National Laboratory (1980)

[2] Campbell DO, Buxton SR, U.S. Patent, 4,025,602 (1977)

[3] Mousty F, Toussaint J, Godfrin J, Girardi F, Proceedings of the 1st Technical Meeting of the Nuclear Transmutation of Actinides, Ispra 16-18 March p. 163-173, EUR-5897 (1977)

[4] Godfrin J, Mousty F, Planson J, Toussaint J, Proceedings of the 2st Technical Meeting of the Nuclear Transmutation of Actinides, Ispra 21-24 April p. 225, EUR-6929 (1977)

[5] Yost DM, Rusell H, Garner CS, The Rare-Earch Elements and Their Compounds, p. 59, John Wiley and Sons, New York (1947)

[6] Hauser O, Wirth F, Anal. Chem., 47, 389 (1908)

[7] Hauser O, Wirth F, Prakt. Chem., 79, 358 (1909)

[8] Wirth F, Anorg. Chem., 58, 213 (1908)

[9] Wirth F, Anorg. Chem., 76, 174 (1912)

[10] Rimbach E, Schubert A, Physik. Chem., 67, 183 (1909)

[11] Sarver LA, Brinton HMP, J. Am. Chem. Soc., 49, 943 (1927)

[12] Crouthamel CE, Martin DS, J. Am. Chem. Soc., 72, 1382 (1950)

[13] Crouthamel CE, Martin DS, J. Am. Chem. Soc., 73, 569 (1951)

[14] Feibush AM, Rowley K, Gordon L, Anal. Chem., 30, 1610 (1958)

[15] Chang TP, DP-1723, Savannah River Laboratory (1987)

[16] Stanislav K, Ladislav S, Handbook of Chemical Equilibria in Analytical Chemistry, p. 154, John Wiley & Sons, New York (1985)

[17] Debye P, Huckel E, Physik. Z., 24, 185 (1923)

[18] Kielland J, J. Am. Chem. Soc., 59, 1675 (1937)

[19] Guggenheim EA, Phil. Mag., 19, 588 (1935)

[20] Davies CW, J. Am. Chem. Soc., 58, 2093 (1938)

[21] Davies CW, Ion Assoc., Butterworths, London (1962)

[22] Bromley LA, AIChE J., 19, 313 (1973)

[23] Wu YC, Hamer WJ, N.B.S. 10002 (1969)

[24] Robinson RA, Stokes RH, Electrolyte Solutions, 2nd ed., Butterworths, London (1959)

[25] Pitzer KS, J. Chem. Soc.-Faraday Trans., 68, 101 (1972)

[26] Meissner HP, Tester JW, Ind. Eng. Chem. Process Des. Dev., 11, 128 (1972)

[27] Cotton FA, Wilkinson G, Advanced Inorganic Chemistry, 5th Ed., p. 955, John Wiley & Sons, New York (1988)

[28] Trotman-Dickenson AF, Comprehensive Inorganic Chemistry; volume 4, Lanthanide, Transition Metal Compounds, p. 6, Pergamon Press, Oxford (1976)

[29] Molter T, The Chemistry of the Lanthanides, p. 20, Reinhold Book Corporation, New York (1963)

[30] Manning PG, Can. J. Chem., 44, 1945 (1966)

[31] Yatsimirskii KB, Zyukov YA, Russ. J. Inorg. Chem., 7, 1583 (1962)