Fig. 7: Sm(III), Ho(III) and Er(III) extraction kinetics by tailored magnetic fields.
From: Increasing rare earth extraction kinetics by tailored magnetic fields

RE(III) concentration boundary layer development 20 sec after the magnet is applied to Sm(III), Ho(III) and Er(III) solutions with initial concentration of 1 M. The magnetic field and measurement system used is the same in Fig. 1. A PC88A concentration of 2 M is used for the heavy rare earths, Er(III) and Ho (III); whereas 1 M for both PC88A and Sm(III) is used for the less magnetically susceptible light rare earth Sm(III). The color bar spans the range -10 to 10 mM, while the black line represents the scale bar of 1 mm. They are identical for all three RE(III) species and are referenced to the Sm(III) distribution at 4 s.