Selective recovery of rhenium from the simulating leaching solutions of uranium ore by amino guanidine functionalized microcrystalline cellulose microsphere

•Amino guanidine functionalized cellulose has been successfully synthesized.•AGfC can effectively and selectively separate trace ReO4– from underground leaching solutions of uranium ore.•The maximum adsorption capacity of 264.55 mg/g at pH 2.37.•AGfC can be effectively regenerated by HCl or HNO3.•The adsorption mechanism was electrostatic interaction.