The residue from the acidic concentrated lithium bromide treated crop residue as biochar to remove Cr (VI).

摘要: Abstract In this work, the hydrolysis residue produced from acidic concentrated lithium bromide (ALBH) of wheat straw, corn stover and elephant grass were characterized as biochar. The ALBH biochar black power had high content carbon (49.65–55 wt%), specific surface areas (4.53–7.79 m2/g), porous structures (micropores, mesopores macropores) abundant oxygen functional groups (hydroxy, carbonyl, ester ketone groups). These properties made a potential adsorbent for environmental remediation, with relatively removal efficiency variety heavy metal ions, especially hexavalent chromium (Cr(VI)). Therefore, technology may be an efficient strategy synthesis bio-char along fermentable sugars, which met concern sustainability green chemistry.