Fig. 3
From: Magnetic orange leaf biochar for favipiravir removal from wastewater
(a) Pyrolysis of biomass conducted in a nitrogen atmosphere furnace; (b) Release of biogas during the synthesis of MBC-OL; (c) Completion of the MBC-OL synthesis process; (d) Washing and drying of MBC-OL at 85 °C to remove impurities and enhance stability.
