Abstract
Solvent extraction of Ce(IV) and Th(IV) from 8 M HNO3 with TBP in kerosene was studied. The dependence of the extraction on the TBP concentration, kind of diluent, O/A phase ratio, and contact time was examined. The extraction efficiency reaches 99.3 and 97.7% for Ce and Th, respectively, at 5% TBP in kerosene, 1/1 O/A phase ratio, and 5 min contact time. Successive selective stripping of Ce(III) and Th(IV) from the loaded organic phase was reached at 1.1 M H2O2 concentration, 10 min contact time, 3/1 O/A phase ratio, and room temperature (25 ± 2°C). After stripping of cerium, the remaining organic was contacted with H2O for thorium stripping at 5 min contact time, 2/1 O/A phase ratio, and room temperature (25 ± 2°C).
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Mukherjee, T.K. and Singh, H., Recovery of uranium and thorium from secondary resources, Nuclear Fuel Cycle Technologies—Closing Fuel Cycles, Raj, B. and Vasudeva Rao, P.R., Eds., Mumbai (India): Board of Research in Nuclear Sciences, 2006.
Gschneidner, K.A., Specialty Inorganic Chemicals, Thompson, R., Ed., London: Roy. Soc. Chem., 1981, pp. 403–443.
Miao, Y.W. and Horn, J.S., Rare Earths Extraction, Preparation, and Applications, Bautista, R.G. and Wong, M.M., Eds., Pennsylvania: Minerals, Metals, and Materials Soc., 1988, pp. 195–206.
Gupta, C.K. and Singh, H., Uranium Resource Processing: Secondary Resources, Springer, 2003.
Li, D., Zuo, Y., and Meng, S., J. Alloys Compd., 2004, vol. 374, nos. 1–2, pp. 431–433.
Habashi, F., Handbook of Extractive Metallurgy, Wiley-VCH, 1997.
Miyawaki, R. and Nakai, I., Crystal chemical aspects of rare earth minerals, Rare Earth Minerals: Chemistry, Origin and Ore Deposits, vol. 7 of The Mineralogical Society Ser., Jones, A.P., Wall, F., and Williams, C.T., Eds., London: Chapman and Hall, 1996.
Silva, A.S., Almendra, E.R.E., Ogasawara, T., and Andrada, M.C., Lixiviacao sulfurica da monazita em autoclave: Analise termodinamica. Anais do III Encontro de Metalurgia, Mineracao e Materiasi, Belo Horizonte (Brazil): UFMG, 1995, vol. 1, pp. 223–234.
Vijayalakshmi, R., Mishra, S.L., Singh, H., and Gupta, C.K., Hydrometallurgy, 2001, vol. 61, no. 2, p. 75.
Hughes, K.C. and Singh, R., Hydrometallurgy, 1980, vol. 6, pp. 25–33.
Dong, Z. and Jinwen, D., New Frontiers in Rare Earth Science and Applications, Guangxian, X. and Jenei, X., Eds., Orlando, FL (USA), Academic, 1985, p. 497.
Lu, J., Wei, Z., Li, D., et al., Hydrometallurgy, 1998, vol. 50, pp. 77–87.
Nikolaev, A.V. and Afanas’ev, Yu.A., Dokl. Akad. Nauk SSSR, 1962, vol. 147, no. 6, pp. 1380–1381.
Zhao, J., Zuo, Y., Li, D., and Liu, S., J. Alloys Compd., 2004, vol. 374, nos. 1–2, pp. 438–441.
Hammad, A.K., Ibrahim, E.E., and Hammad, M.R., Arab J. Nucl. Sci. Appl., 1986, vol. 19, no. 1, p. 19.
Manufacturing Technology, Tata McGraw-Hill Education, 2013, p. 389.
Ali, A.M.I., El-Nadi, Y.A., Daoud, J.A., and Aly, H.F., Int. J. Miner. Process., 2007, vol. 81, pp. 217–223.
Zhao, J.M., Li, W., Li, D.Q., and Xiong, Y., Solvent Extr Ion Exch., 2006, vol. 4, pp. 165–176.
Zhao, J.M., Meng, S., and Li, D.Q., Solvent Extr. Ion Exch., 2004, vol. 22, pp. 429–447.
Zhao, J.M., Meng, S., and Li, D.Q., Solvent Extr. Ion Exch., 2004, vol. 22, pp. 813–831.
Zhao, J.M., Zuo, Y., Li, D.Q., and Liu, S.Z., J. Alloys Compd., 2004, vol. 374, pp. 438–441.
Helaly, O.S., Abd Elghany, M.S., Moustafa, M.I., et al., Trans. Nonferrous Met. Soc. China, 2012, vol. 22, pp. 206−214.
He, J., Li, Y., Xue, X., et al., RSC Adv., 2015, vol. 5, pp. 74961–74 972.
Marczenko, Z., Spectrophotometric Determination of Elements, New York: Horwood, 1976, p. 580.
Hurst, F.J., Crouse, D.J., and Brown, K.B., Ind. Eng. Chem. Process Des. Develop., 1972, vol. 11, p. 122.
Kolarik, Z., Gmelin Handbook of Inorganic Chemistry, New York: Springer, 1982, vol. 8, p. 135.
Srinivasan, T.G., Vasudeva, R.P.R., and Sood, D.D., Solvent Extr Ion Exch., 1998, vol. 16, p. 1369.
Rizk, S., Chemical studies related to redox processes in uranium–cerium separation, MSc Thesis, Zagazig Univ., Faculty of Science, Chemistry Department, 2005.
Author information
Authors and Affiliations
Corresponding author
Additional information
Published in Russian in Radiokhimiya, 2017, Vol. 59, No. 6, pp. 510–516.
The text was submitted by the author in English.
Rights and permissions
About this article
Cite this article
Ali, A.H. Coextraction and successive selective stripping of cerium(IV) and thorium from monazite leach solutions with tributyl phosphate (TBP). Radiochemistry 59, 579–586 (2017). https://doi.org/10.1134/S10663622170600054
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S10663622170600054