Figure 7
Desorption in \(\frac{{mg}_{REE}}{{kg}_{sample}}\) for the three size fractions S1 (< 0.25 mm), S2 (0.25–0.5), S3 (0.5–2 mm) using 0.15 mol/L ammonium sulfate at L/S of 3 mL/g and two pH: a) native pH (~ 5), b) pH 3.
Figure 7 | Scientific Reports
