Selective Recovery of Palladium from Used Aqua Regia by Hollow Fiber Supported with Liquid Membrane

Patthaveekongka Weerawat; Vijitchalermpong Nattaphol; Pancharoen Ura

Korean Journal of Chemical Engineering, Vol.20, No.6, 1092-1096, November, 2003

DOI10.1007/BF02706942 Export Citation

Selective Recovery of Palladium from Used Aqua Regia by Hollow Fiber Supported with Liquid Membrane

Patthaveekongka Weerawat, Vijitchalermpong Nattaphol, and Pancharoen Ura^†

Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Phayathai Road, Patumwan, Bangkok 10330, Thailand

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This research study was aimed at recovering palladium from used aqua regia by means of a hollow fiber thoroughly supported with liquid membrane. The liquid membrane, consisting of two extractants--thioridazine·HCl and oleic acid-solubilized in chloroform--was used to coat the microporous hollow fiber throughout. Sodium nitrite, a stripping agent, which was fed through the shell side, flowed counter-currently with the feed solution fed via the tube side. The following factors were investigated: the concentrations of the two extractants and of sodium nitrite, the pH of used aqua regia, the flow rates of both the feed and stripping solution, and the number of runs in the hollow fiber module. It was found that after a 30-minute operation, 29.10% of palladium ion was optimally recovered at 0.0005- M thioridazine and 0.05-M oleic acid. With reference to the precious metals recovered, the following order was recorded: Pd(II) > Pt(IV) > Cu(II) > Au(III). It was observed that synergistic extraction could be gained at the concentration level of the extractants, regulated in the experiment. The liquid membrane system had long-term stability and even after the third run, it could still recover palladium up to 65%.

Keywords:Palladium;Recovery;Hollow Fiber;Liquid Membrane;Synergistic Extraction

[References]

Antico E, Masana A, Hidalgo M, Salvado V, Valiente M, Hydrometallurgy, 35, 343 (1994)
Deshmukh BK, Kharat RB, J. Ind. Chem. Soc., 53, 980 (1976)
Farbu L, Alstad J, Auguston JH, 1974. cited in G. Duyckaerts and J.F. Desreux, 1977, "Recent Development and New Combinations of Extractants in Synergistic Processes," Proceedings of International Solvent Extraction Conference (1977)
Farhadi K, Shamsipur M, Sep. Sci. Technol., 35(6), 859 (2000)
Fu JS, Nakamura S, Akiba K, Sep. Sci. Technol., 30(5), 793 (1995)
Fu JS, Nakamura S, Akiba K, Sep. Sci. Technol., 32(8), 1433 (1997)
Gowda HS, Padmaji KA, Current Sci., 47, 226 (1978)
Gowda HS, Ramappa PG, Achar BN, Zeitschrift Fur Analytische Chemie, 275, 127 (1975)
Gowda NMM, Vallabhaneni RK, Gajula J, Ananda S, J. Mol. Structure, 407(2-3), 125 (1997)
Jeong SK, Ju CS, Korean J. Chem. Eng., 19(1), 93 (2002)
Kakoi T, Goto M, Nakashio F, Sep. Sci. Technol., 32(8), 1415 (1997)
Kakoi T, Horinouchi N, Goto M, Nakashio F, Sep. Sci. Technol., 31(3), 381 (1996)
Mathur JN, Sol. Extraction Ion Exchange, 1(2), 349 (1983)
Myers D, "Liquid Crystals, Vesicles and Liquid Membranes," Surfactants Science and Technology, Weinheim: VCH Publishers, New York (1988)
Patthaveekongka W, "Influence of Acetic Acid-sodium Acetate Solution Concentration on Extraction of Zinc Ions via a Hollow Fiber Supported Liquid Membrane," Master's thesis, Dept. of Chem. Eng., Chulalongkorn University (1999)
Prakorn R, Ura P, Korean J. Chem. Eng., 20(4), 724 (2003)
Rizvi GH, Mathur JN, Murali MS, Iyer RH, Sep. Sci. Technol., 31(13), 1805 (1996)
Rosen MJ, "Physiocochemical Properties of Surfactants & Polymers Containing Oxyethylene Groups and Intermolecular Interactions," Surfactants and Interfacial Pehnomena, John Wiley, New York (1988)
Rovira M, Sastre AM, J. Membr. Sci., 149(2), 241 (1998)
Tavlarides LL, Bae JH, Lee CK, Sep. Sci. Technol., 22(2-3), 581 (1987)
Yi J, Korean J. Chem. Eng., 12(3), 391 (1995)

[Referenced By]

[1] Antico E, Masana A, Hidalgo M, Salvado V, Valiente M, Hydrometallurgy, 35, 343 (1994)

[2] Deshmukh BK, Kharat RB, J. Ind. Chem. Soc., 53, 980 (1976)

[3] Farbu L, Alstad J, Auguston JH, 1974. cited in G. Duyckaerts and J.F. Desreux, 1977, "Recent Development and New Combinations of Extractants in Synergistic Processes," Proceedings of International Solvent Extraction Conference (1977)

[4] Farhadi K, Shamsipur M, Sep. Sci. Technol., 35(6), 859 (2000)

[5] Fu JS, Nakamura S, Akiba K, Sep. Sci. Technol., 30(5), 793 (1995)

[6] Fu JS, Nakamura S, Akiba K, Sep. Sci. Technol., 32(8), 1433 (1997)

[7] Gowda HS, Padmaji KA, Current Sci., 47, 226 (1978)

[8] Gowda HS, Ramappa PG, Achar BN, Zeitschrift Fur Analytische Chemie, 275, 127 (1975)

[9] Gowda NMM, Vallabhaneni RK, Gajula J, Ananda S, J. Mol. Structure, 407(2-3), 125 (1997)

[10] Jeong SK, Ju CS, Korean J. Chem. Eng., 19(1), 93 (2002)

[11] Kakoi T, Goto M, Nakashio F, Sep. Sci. Technol., 32(8), 1415 (1997)

[12] Kakoi T, Horinouchi N, Goto M, Nakashio F, Sep. Sci. Technol., 31(3), 381 (1996)

[13] Mathur JN, Sol. Extraction Ion Exchange, 1(2), 349 (1983)

[14] Myers D, "Liquid Crystals, Vesicles and Liquid Membranes," Surfactants Science and Technology, Weinheim: VCH Publishers, New York (1988)

[15] Patthaveekongka W, "Influence of Acetic Acid-sodium Acetate Solution Concentration on Extraction of Zinc Ions via a Hollow Fiber Supported Liquid Membrane," Master's thesis, Dept. of Chem. Eng., Chulalongkorn University (1999)

[16] Prakorn R, Ura P, Korean J. Chem. Eng., 20(4), 724 (2003)

[17] Rizvi GH, Mathur JN, Murali MS, Iyer RH, Sep. Sci. Technol., 31(13), 1805 (1996)

[18] Rosen MJ, "Physiocochemical Properties of Surfactants & Polymers Containing Oxyethylene Groups and Intermolecular Interactions," Surfactants and Interfacial Pehnomena, John Wiley, New York (1988)

[19] Rovira M, Sastre AM, J. Membr. Sci., 149(2), 241 (1998)

[20] Tavlarides LL, Bae JH, Lee CK, Sep. Sci. Technol., 22(2-3), 581 (1987)

[21] Yi J, Korean J. Chem. Eng., 12(3), 391 (1995)