▎ 摘　　要

NOVELTY - Magnetic adsorbent comprises hydrothermal carbon microsphere (GC), graphene oxide (GO), and ferroferric oxide (Fe3O4) to form magnetic adsorbent GO/Fe3O4/GC. The GC has carboxy. The GO has hydroxy. The carboxy on GC is connected with the hydroxy on GO through a covalent bond, and Fe3O4 is distributed on the surface of GO. USE - The magnetic adsorbent i.e. GO/Fe3O4/GC is used for removing uranium plutonium nuclide in nuclear waste liquid (claimed). ADVANTAGE - The magnetic adsorbent has good uranium plutonium nuclide adsorption effect and high adsorption efficiency, and is convenient to separate from waste liquid. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) preparation of the magnetic adsorbent comprising subjecting glucose to hydrothermal synthesis and burning to obtain carboxylated modified hydrothermal carbon microsphere (GC), combining with GO in ultrasonic wave, and adding divalent iron salt and alkaline solution to magnetize and modify; and (2) application of the magnetic adsorbent for removing uranium plutonium nuclide in nuclear waste liquid comprising adjusting the pH of the nuclear waste liquid at 5-6, adding magnetic adsorbent GO/Fe3O4/GC, where magnetic adsorbent reaches good uranium adsorption effect in 30 minutes, and carrying out magnetic separation after adsorption.