Fig. 2: Improved extraction yield of REE from BO by electrothermal activation.
From: Sustainable rare earth extraction from phytomining by rapid electrothermal calcination

a Total quantification of REE in Raw BO. b H2SO4-extractable REE contents (1 M, 90 °C) in Raw BO, Activated BO, and Calcinated BO. c pH-dependent REE leaching yield from the Raw BO, Activated BO, and Calcinated BO. d Extraction yield of REE at different REC reaction temperatures for 10 s. e Extraction yield of REE at 1000 °C for different reaction times. All error bars denote standard deviation where N = 3.