Comment: |
Batch experiments using δ-MnO2 were conducted over pH 2 to 10 at two total U concentrations (2 and 50 μM) and three dissolved inorganic carbon (DIC) concentrations (0, 1, and 5 mM). Experiments in the absence of DIC were performed in a glovebox (Coy Laboratory Products Inc., MI) with an atmosphere of low CO2 created by scavenging with strong base. The dissolved inorganic carbon was set by addition of NaHCO3, and the reactors with 50 mL total solution were tightly sealed to make them closed systems.
Molar concentration based equilibrium constants, as input in MINEQL |