The　recovery　of　scattered　metal　ions　such　as　perrhenate　(Re(Ⅶ))　from　industrial　effluents　has　enormous　economic　benefits　and　promotes　resource　reuse.Nanoscale-metal/biochar　hybrid　biosorbents　are　attractive　for　recovery　but　are　limited　by　their　insufficient　stability　and　low　selectivity　in　harsh　environments.Herein,a　superstable　biochar-based　biosorbent　composed　of　ZnO　nanoparticles　with　remarkable　superhydrophobic　features　is　fabricated,and　its　adsorption/desorption　capabilities　toward　Re(Ⅶ)　in　strongly　acidic　aqueous　solutions　are　investigated.The　ZnO　nanoparticle/biochar　hybrid　composite　(ZBC)　exhibits　strong　acid　resistance　and　high　chemical　stability,which　are　attributable　to　strong　C-O-Zn　interactions　between　the　biochar　and　ZnO　nanoparticles.Due　to　the　advantages　of　its　hydrolytic　stability,superhydrophobicity,and　abundance　of　Zn-O　sites,the　ZBC　proves　suitable　for　the　effective　and　selective　separation　of　Re(Ⅶ)　from　single,binary　and　multiple　ion　systems　(pH=1),with　a　maximum　sorption　capacity　of　29.41　mg/g.More　importantly,this　material　also　shows　good　recyclability　and　reusability,with　high　adsorption　efficiency　after　six　adsorption-desorption　cycles.The　findings　in　this　work　demonstrate　that　a　metal/biochar　hybrid　composite　is　a　promising　sorbent　for　Re(Ⅶ)　separation.