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With the exploitation of rare earth ore,more and more REEs came into groundwater.This was a waste of resources and could be harmful to the organisms.This study aimed to find an efficient adsorption material to mitigate the above issue.Through doping sodium alginate(SA)with poly-γ-glutamate(PGA),an immobilized gel particle material was produced.The composite exhibited excellent capacity for adsorbing rare earth elements(REEs).The amount of La3+ adsorbed on the SA-PGA gel particles reached approximately 163.93 mg/g compared to the 81.97 mg/g adsorbed on SA alone.