Fig. 1

Kinetic experimental results for percentage precipitation of (a) Fe, (b) Al, (c) TREEs and (d) Th at 25 °C, pH 3.0–4.5 up to 30 min residence time. (e) The pH profile over time, and (f) the ORP profile over time. (g) Concentration of Al, Fe, Th, and TREE as a function of pH at a 30-min timepoint.