Fig. 12From: Interaction mechanisms and kinetics of ferrous ion and hexagonal birnessite in aqueous systemsThe relationship of consumed Fe2+ and released Mn2+ concentration in the initial reaction stage of 20 mM Fe2+ and 1.0 g L−1 birnessite under different conditions: a pH 4.0–7.0, 25 °C, N2; b pH 5.5, 10–40 °C, N2; c pH 4.0–7.0, 25 °C, airBack to article page