▎ 摘　　要

NOVELTY - Concentrating radioactive solution involves mixing carbon-based magnetic nano composite material and radioactive solution, and then absorbing to obtain a mixed solution. The obtained mixed solution is magnetically separated to remove supernatant to obtain primary concentrated solution, and then mixed primary concentrated solution and high-valent aluminum ion for carrying out desorption to obtain another mixed solution. The solid-liquid separation is performed to obtain the concentrated solution. USE - Method for concentrating radioactive solution using carbon-based magnetic nano-composite material. ADVANTAGE - The method can realize fast and efficient adsorption removal and desorption purification separation of radioactive element (manganese, strontium, cobalt), and low concentration to high concentration, in the separation, purification and concentration, and has good application prospect.