Electrostatic separation of the defatted rice bran flour (DRBF)
was done with a custom-designed bench-scale separator described
in a previous study (Wang et al., 2015a), with the following settings:
dosing rate of DRBF 2 kg/h, flow rate of the carrier nitrogen
gas 20 L/min, the applied voltage to the positive electrode 20 kV
and the distance between the electrodes 10 cm. From each experiment
four fractions were obtained: one from the ground electrode
(GE), one from the positive electrode (PE), one from the collecting
filter bag below the ground electrode (GC) and one from the collecting
filter bag below the positive electrode (PC) (Fig. 1). For twostep
electrostatic separation, the fraction PE was subjected to a
second separation step which yielded another four fractions (PEGE,
PE-GC, PE-PE and PE-PC).