Abstract
The partitioning of actinides from simulated high level liquid waste (HLLW) originated from the Purex process has been studied using a mixture of dihexyl N,N-diethylcarbamoylmethyl-phosphonate (DHDECMP) and tributylphosphonate (TBP) in kerosene (OK). The distribution ratios of actinides were investigated as a function of a number of parameters such as the concentration of nitric acid, salting-out reagent, Gd(III) in the aqueous phase, extractant in the organic phase, and temperature. The extraction complexes, extraction reaction constant k, and thermodynamic parameters ΔH, ΔG and ΔS were determined. The extraction of actinides from simulated HLLW by DHDECMP-TBP/OK has been carried out using a miniature countercurrent centrifugal contactor. The results show that the removal efficiency of actinides is greater than 99.9%. A conceptual flowsheet for the removal of actinides from HLLW is proposed.
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References
L. H. Baetsle, IAEA Bulletin, 34 (1992) No. 3, 32.
E. P. Horwitz, W. W. Schulz, Solvent Extraction in the Treatment of Acidic High-Level Liquid Waste: Where Do We Stand? Argonne National Laboratory Report ANL/CHM/CP-93488; Argonne National Laboratory, Chicago, IL, 1998.
J. N. Mathur, M. S. Murali, K. L. Nash, Solvent Extr. Ion Exch., 19 (2001) 357.
L. Nigond, N. Condamines, P. Y. Cordier, J. Livet, C. Madic, C. Cuillerdier, C. Musikas, Separ. Sci. Technol., 30 (1995) 2075.
Y. Morita, J. P. Glatz, M. Kubota, Solv. Extr. Ion Exch., 14 (1996) 385.
J. D. Law, R. S. Herbst, K. N. Brewer, T. A. Todd, V. N. Romanovskii, V. M. Esimantovskii, I. V. Smirnov, V. A. Babain, B. N. Zaitsev, Demonstration of a Universal Solvent Extraction Process for the Separation of Radionuclides from Actual INEEL Sodium-Bearing Waste and Dissolved Calcine, Idaho National Engineering and Environmental Laboratory Report INEEL/EXT-98-01065, INEEL, Idaho Falls, ID, Dec. 1998.
J. Y. Zhu, R. Z. Jiao, Nucl. Techn., 108 (1994) 361.
Ye Yuxing, Zhao Hugen, Fu Lichun, Wu Guanmin, Removal of Actinides from High Level Waste Containing High Concentration Salt by DHDECMP, China Nuclear Science and Technology Report, CNIC-01137, IAE-0162, CNIC, 1996 (in Chinese).
Huang Zilin, Zhao Hugen, Hu Jinxin, At. Energy Sci. Technol., 32 (1998) No. 4, 338 (in Chinese).
Huang Zilin, Zhao Hugen, Hu Jinxin, Nucl. Radiochem., 20 (1999) No. 1, 9 (in Chinese).
Huang Zilin, Hu Jinxin, Nucl. Radiochem., 22 (2000) No. 2, 87 (in Chinese).
Ye Yuxing, Wu Guamin, Zhao Hugen, At. Energy Sci. Techn., 34 (add) (2000) 128 (in Chinese).
Zhao Hugen, Ye Yuxing, Yang Xuexian, At. Energy Sci. Techn., 3 (1983) 332 (in Chinese).
The Standard of the People's Republic of China GB892188, The Determination of Uranium in Nature by TOPO Extraction and Br-PADAP Spectrophotometry, Beijing, China 1989 (in Chinese).
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Yu-xing, Y., Jin-xin, H., Zi-lin, H. et al. Extraction of actinides from simulated HLLW by DHDECMP-TBP/OK. Journal of Radioanalytical and Nuclear Chemistry 261, 365–374 (2004). https://doi.org/10.1023/B:JRNC.0000034872.75521.af
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DOI: https://doi.org/10.1023/B:JRNC.0000034872.75521.af