Predominance diagrams for Zn(II)–NH3–Cl−−H2O system

2013 ◽  
Vol 23 (3) ◽  
pp. 832-840 ◽  
Author(s):  
Zhi-ying DING ◽  
Qi-yuan CHEN ◽  
Zhou-lan YIN ◽  
Kui LIU
2013 ◽  
Vol 43 (12) ◽  
pp. 1235-1241 ◽  
Author(s):  
L. D. Brown ◽  
R. Abdulaziz ◽  
S. Simons ◽  
D. Inman ◽  
D. J. L. Brett ◽  
...  

1986 ◽  
Vol 25 (2) ◽  
pp. 107-112 ◽  
Author(s):  
Christopher W. Bale ◽  
Arthur D. Pelton ◽  
W. T. Thompson

1993 ◽  
Vol 70 (10) ◽  
pp. 790 ◽  
Author(s):  
J. Vale ◽  
C. Fernandez-Pereira ◽  
M. Alcalde

2013 ◽  
Vol 781-784 ◽  
pp. 3-8
Author(s):  
Xin Yu Wang ◽  
Shi Jun Ni ◽  
Ze Ming Shi

To explore the effect of logfO2(g), pH, uranium concentration, phosphate concentration and NaCl concentration on the predominance diagrams of dissolved uranium species and formation of solid phases containing uranium in the U-PO43--NaCl-H2O system at 25 °CandPCO2=10-3.5MPa, the thermodynamic model of this system was constructed. Based on the results of calculation, the logfO2(g)-pH diagrams were drawn. It can be found that: 1) the formation of uraninite needed enough reductive condition (about logfO2(g) < -50 ), while the formation of Na-Autunite needed the strict pH range (5<pH<8) in oxidative condition. 2)The addition of phosphate concentration could promote the formation of Na-Autunite, and inhibit the formation of U4O9(C). 3)The independent increasing of uranium concentration can lead to more kinds of uranium species.4) The variance of NaCl concentration had little impact on the formation of solid phases containing uranium.


2007 ◽  
Vol 84 (3) ◽  
pp. 520 ◽  
Author(s):  
Constantino Fernández Pereira ◽  
Manuel Alcalde ◽  
Rosario Villegas ◽  
José Vale

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