Investigation of biochar from Cedrella fissilis applied to the adsorption of atrazine herbicide from an aqueous medium

Biochar was produced from the sawdust of wood forest species Cedrella fissilis and later used as an adsorbent to remove atrazine herbicide aqueous media. showed high thermal stability, amorphous structure, a highly irregular surface, mainly composed carbon-containing bonds. The isothermal curves confirmed that increase in temperature favored adsorption herbicide. Langmuir model best suited experimental equilibrium data, with maximum capacity 7.68 mg g-1 at 328 K. thermodynamic parameters spontaneous process endothermic nature governed by physical interactions (interactions van der Waals hydrogen bonds). Kinetic studies reached within 180 min. linear driving force (LDF) good statistical adjustment where it observed diffusion coefficient increased concentration adsorbate. can be reused up three cycles. Finally, efficiency real water samples rivers contaminated atrazine, 76.58% 71.29% removal.