Properties comparison of biochars from corn straw with different pretreatment and sorption behaviour of atrazine

- Two biochars were characterised via elemental analysis, BET-N2 and FTIR to illuminate the impact of different pretreatment on structure.
- The NH4H2PO4 can improve the residue yield and specific surface area of biochar.
- Biochar with NH4H2PO4 pretreatment has high efficiency of sorpotion behaviour of atrazine.