Fig. 1: Extraction of REE by rapid electrothermal activation.
From: Sustainable rare earth extraction from phytomining by rapid electrothermal calcination
a Conceptual schematic of REE extraction from phytomining by REC. b Picture of dried Blechnum orientale (BO). Scale bar, 3 cm. Inset, the mixture of crushed BO before and after REC. c SEM image of dried raw BO materials. Scale bar, 10 μm. d Thermogravimetric analysis of BO and the first derivative. e Picture of the reactor and an enlarged reactor during the REC process. f Real-time temperature curve measured during the REC reaction. g Pictures of intense light emission during the REC process.
