Fig. 4From: The influence of environmental conditions on kinetics of arsenite oxidation by manganese-oxidesEffect of temperature on arsenic(III) oxidation by manganese-oxides: the influence of temperature on the oxidation of 1 mM arsenite by 1.82 mM δ-manganese-oxide (top) and acid birnessite (bottom). The minerals were reacted at 10, 25, and 40 °C at pH 7.2. The oxidation of As(III) (right) by a manganese-oxide produces As(V) (left)Back to article page