STUDIES ON THE EXTRACTION EQUILIBRIUM   OF U(NO  3)  4 AND HNO  3 WITH TBP  Ⅰ.Formation of the Third Phase

Journal of Nuclear and Radiochemistry > 1999 > 21(2): 65-65.

STUDIES ON THE EXTRACTION EQUILIBRIUM OF U(NO 3) 4 AND HNO 3 WITH TBP Ⅰ.Formation of the Third Phase[J]. Journal of Nuclear and Radiochemistry, 1999, 21(2): 65-65.

Citation:

STUDIES ON THE EXTRACTION EQUILIBRIUM OF U(NO 3) 4 AND HNO 3 WITH TBP Ⅰ.Formation of the Third Phase[J]. Journal of Nuclear and Radiochemistry, 1999, 21(2): 65-65.

Citation:

STUDIES ON THE EXTRACTION EQUILIBRIUM OF U(NO 3) 4 AND HNO 3 WITH TBP Ⅰ.Formation of the Third Phase[J]. Journal of Nuclear and Radiochemistry, 1999, 21(2): 65-65.

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STUDIES ON THE EXTRACTION EQUILIBRIUM OF U(NO 3) 4 AND HNO 3 WITH TBP Ⅰ.Formation of the Third Phase

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Received Date: April 23, 1998

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Abstract

Effects of concentraction of uranium(Ⅳ), nitric acid, uranium(Ⅵ)and different diluents on the formation of the third phase are investigated in extraction of uranium(Ⅳ)and nitric acid by 30%TBP.The equilibrium concentrations of uranium(Ⅳ)and nitric acid in aqueous phase, heavy organic phase and light organic phase are determined respectively. The equilibrium concentrations of TBP in heavy organic phase and light organic phase are also determined. The experimental results show that if uranium(Ⅵ) exists in aqueous system of U(NO 3) 4 HNO 3,the extraction distribution of U(Ⅳ) and HNO 3 in organic phase decreases and the third phase disappears at last, when the concentration of uranium(Ⅵ) in U(NO 3) 4 HNO 3 solution is high enough. When benzene, derivate of benzene, chloroform, carbon tetrachloride and lower linear chain saturated hydrocarbon are used as diluent, the third phase is not easily formed. However, as hiigher linear chain saturated hydrocarbon is used as diluent, the third phase is easily formed.

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References

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[1]	YU Ting, HE Hui, YE Guo-an, LI Zheng, LI Qing-nuan, ZHANG Lan. Present Situation of Research of Computer Simulation of Third Phase Formation: U(Ⅳ), Th(Ⅳ), and Pu(Ⅳ) in TBP-HNO₃ Systems[J]. Journal of Nuclear and Radiochemistry, 2016, 38(5): 257-266. DOI: 10.7538/hhx.2016.38.05.0257
[2]	BAI Xue, LI Ding-ming, CHANG Zhi-yuan, KANG Hai-ying. Internal Standard Method for Determination of U(Ⅵ) in Organic Phase in Purex Process by Raman Spectroscopy[J]. Journal of Nuclear and Radiochemistry, 2015, 37(3): 143-152. DOI: 10.7538/hhx.2015.37.03.0143
[3]	THE EXTRACTION OF LOW-CONCENTRATION URANYL NITRATE AND NITRIC ACID BY DILUTE TBP/KEROSENE IN THE PRESENCE OF Al(NO_3)_3[J]. Journal of Nuclear and Radiochemistry, 2003, 25(4): 193-193.
[4]	EXTRACTION OF U(Ⅵ) FROM NITRIC ACID SOLUTIONS WITH N-DECANYL ACYLMOPHOLINE (DMPHL) IN DIFFERENT DILUENTS[J]. Journal of Nuclear and Radiochemistry, 2003, 25(2): 118-118.
[5]	DISTRIBUTION OF U(Ⅵ) IN DILUTE TBP/KEROSENE-HNO_3 SOLUTION[J]. Journal of Nuclear and Radiochemistry, 2000, 22(3): 166-166.
[6]	EXTRACTION OF URANIUM(Ⅵ) WITH DHDECMP-TBP/KEROSENE FROM NITRIC ACID SOLUTION[J]. Journal of Nuclear and Radiochemistry, 2000, 22(2): 87-87.
[7]	SEPARATION OF N_p FROM U AND Pu WITH n-BUTYRALDEHYDE AS REDUCER FROM TBP/OK Ⅰ. STUDIES OF STRIPPING Np(Ⅵ) IN ORGANIC PHASE OF TBP/OK WITH AQUEOUS HNO 3 SOLUTION IN PRESENTING n BUTYRALDEHYDE[J]. Journal of Nuclear and Radiochemistry, 2000, 22(1): 30-30.
[8]	STUDIES ON EXTRACTION OF URANIUM(Ⅵ) WITH PETROLEUM SULFOXIDES[J]. Journal of Nuclear and Radiochemistry, 1999, 21(4): 199-199.
[9]	STUDY ON EXTRACTION EQUILIBRIUM OF U(NO_3) _4 AND HNO _3 WITH TBP Ⅱ CRITICAL CONCENTRATION OF URANIUM(Ⅳ) IN ORGANIC PHASE[J]. Journal of Nuclear and Radiochemistry, 1999, 21(3): 129-129.
[10]	STUDIES ON THE PHOTOCHEMICAL REDUCTION TO PRODUCE U(Ⅳ) IN THE ORGANIC PHASE OF TBP-KEROSENE Ⅱ. PRODUCTION OF DEGRADATION PRODUCTS AND THEIR EFFECTS ON EXTRACTION[J]. Journal of Nuclear and Radiochemistry, 1986, 08(4): 217-217.

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STUDIES ON THE EXTRACTION EQUILIBRIUM OF U(NO 3) 4 AND HNO 3 WITH TBP Ⅰ.Formation of the Third Phase

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