Laserfiche WebLink
• <br />• <br />7A <br />1.Z <br />1A <br />0.a <br />0.4 <br />02 <br />OA <br />-02 <br />-0.4 <br />-U <br />-oa <br />•1A <br />••••• H3d040(&q) <br />VO#i2+ ?• % <br />0 Z 4 0 PH a 10 12 14 <br />Pon & Eh-pH clog rn for semen V-0-H d! 201C aril 1 aft <br /> <br />Vanadium Pure Phase Minerals <br />In the solid state, vanadium can exist in six different valence states, from 0 (vanadium <br />metal) to +5. Vanadium forms solid phases as the metal, oxides, hydroxides, halides (F-, <br />Cl-, etc.), phosphates, sulfates, nitrates, and other elements (EPRI,1984). At low pH, <br />Fe(VO3)2 and V20s are the least soluble phases, while lead vanadate (Pb2V207) and <br />carnotite (K2(UO2)2(VO4)2.3H2O) are the least soluble at high pH, depending on the <br />concentrtations of the accompanying ions (lead, uranium, etc.) (EPRI,1984). Pure phase <br />vanadium minerals are rarely formed in natural waters due to the relatively low <br />concentrations of vanadium and the other ions (i.e. uranium, lead, etc.). <br />Vanadium Solid-Solution Phases