▎ 摘　　要

NOVELTY - A polyaluminum chloride-modified graphene oxide adsorbent is prepared by mixing 0.3-0.4 g/l graphene oxide suspension and 0.5-1.5% polyaluminum chloride solution in a ratio of 15-25:1 to obtain mixed suspension. USE - Polyaluminum chloride-modified graphene oxide adsorbent used in removal of fatty acid in wastewater (claimed). ADVANTAGE - The polyaluminum chloride-modified graphene oxide adsorbent has excellent electrostatic adsorption and chemical adsorption property, and solid-liquid separation efficiency. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of polyaluminum chloride-modified graphene oxide adsorbent, which involves (i) weighing cryptographer graphite to obtain graphite oxide, pickling graphite oxide, washing, centrifuging with a centrifuge to obtain precipitate, (ii) vacuum freeze-drying the centrifuged graphite oxide for 24-60 hours, grinding the dried graphite oxide into powder, (iii)uniformly dispersing graphene oxide powder in water, mixing graphene oxide powder and water in a ratio of 1-5 g:3 l, (iv) stripping the graphite oxide solution for 5-15 minutes, (v) centrifuging the stripped suspension to obtain supernatant which is graphene oxide suspension, (vi) adding graphene oxide suspension and 0.5-2% polyaluminum chloride solution in a ratio of 15-25:1, controlling pH to 6.5-7.5, and oscillating in a water bath; and (2) removal of fatty acid in wastewater with polyaluminum chloride-modified graphene oxide adsorbent, which involves (i) using natural graphite as raw material, preparing graphene oxide suspension by Hummer method, adding polyaluminum chloride solution to graphene oxide suspension, and uniformly mixing to obtain polyaluminum chloride-modified graphene oxide suspension, (ii) taking fatty acid-containing waste water as a treatment object, (iii) mixing polyaluminum chloride-modified graphene oxide suspension and wastewater, adjusting the pH to obtain mixture, (iv) shaking the mixture, adsorbing, removing, and (v) filtering the fatty acid-grafted graphene oxide suspension.