kelvin Posted December 22, 2010 Share Posted December 22, 2010 Dear Tom: I use the Act2 program(GWB 8.0.8) to draw the pe-pH diagram of UO2++. The basic information are as follows: UO2++(total) = 1.000000E-06 (M) | HCO3-(total) = 5.304055E-04 (M) T=25C & 80C The results are shown as attachment. From the results, we can see when pH=8 and pe=0, the predominant species is UO2.25 at 25C, and the predominant species is UO2.3333(beta) at 80C. But when I use the React program to perform the speciation modeling, it shows: UO2.3333(beta) ppt at pH=8 and pe=0 at T=25C, UO2.6667 ppt at pH=8 and pe=0 at T=80C. The results from React and Act2 are different. Why? Could you help me to confirm these results. Thanks a lot. Kelvin Quote Link to comment Share on other sites More sharing options...
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