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Technetium (99Tc),a major fission product in nuclear reactors,of high yield,long-half-life and high mobility in the environment must be removed in nuclear fuel reprocessing.Considering rhenium (Re) and Tc are both ⅦB elements,Re is a good chemical analogue to 99Tc.Herein,we use Re as a substitution of 99Tc to study adsorption and desorption behavior.Porous 4-vinylpyridine-divinylbenzene-based (4VP-DVB) adsorbent containing tertiary amine groups is synthesized by suspension polymerization and characterized by BET,TGA,SEM and laser particle size analyzer.The adsorbent has high adsorption efficiency toward Re(Ⅶ) in 0.1 mol/L nitric acid solution,and the adsorption equilibrium can be achieved in 30 min.The adsorption kinetics of Re(Ⅶ) follows pseudo-second-order rate equation,the adsorption isotherm matches well with the Langmuir isotherm,and the adsorption capacity of Re(Ⅶ) on 4VP-DVB adsorbent is 352.1 mg/g at 298 K.Thermodynamic study reveals that the adsorption process is exothermic.This adsorbent is of separation convenience when a fixed-bed column is used,compared to the batch adsorption treatment.