Using　chicken　manure　as　raw　material　to　prepare　activated　carbon　as　a　dispersant,　a　novel　biochar-loaded　nano-zerovalent　iron　composite　(nZVI@CMBC)　was　developed　and　applied　to　remove　hexavalent　chromium,　i.e.,　Cr(VI),　in　wastewater.　The　dispersion　of　nano-zerovalent　iron　(nZVI)　particles　on　the　surface　of　chicken　manure–derived　biochar　(CMBC)　successfully　inhibited　the　aggregation　of　magnetic　iron　particles　and　effectively　reduced　the　size　of　nZVI　particles.　The　results　demonstrated　that　under　acidic　conditions,　the　removal　efficiency　of　Cr(VI)　by　the　nZVI@CMBC　composite　could　reach　124.12 mg g−1.　The　pseudosecond-order　kinetic　model　had　a　good　agreement　with　the　adsorption　kinetics　of　the　nZVI@CMBC　composite,　implying　that　the　adsorption　of　Cr(VI)　is　based　on　the　multi-layer　chemical　adsorption.　Therefore,　this　study　provides　a　new　clue　and　strategy　for　removing　Cr(VI)　in　wastewater.　Copyright　©　2022　Fang,　Huang,　Xie,　Du,　Zhu,　Wang,　Zhuang　and　Huang.