Fig. 2From: Potential use of Ulva intestinalis-derived biochar adsorbing phosphate ions in the cultivation of winter wheat Tristicum aestivumLinearization of pseudo-first-order model (a), linearization of pseudo-second-order model (b), pseudo-second-order kinetic model (c) and the intramolecular diffusion model Weber–Morris (d) for sorption of phosphate ions by modified biochar obtained at 700 °CBack to article page