The biochar samples (BCs) used in this study were obtained by slowly pyrolyzing the sun-dried biomass of water hyacinth under N2 at 250, 350, 450, and 550 C for 1 h.
The biochar samples (BCs) used in this study were obtained byslowly pyrolyzing the sun-dried biomass of water hyacinth underN2 at 250, 350, 450, and 550 C for 1 h.