Highly Selective Adsorption of 99TcO4−/ReO4− by a Novel Polyamide-Functionalized Polyacrylamide Polymer Material

The treatment of radioactive wastewater is one of the major problems in the current research. With the development of nuclear energy, the efficient removal of99TcO4−in radioactive wastewater has attracted the attention of countries all over the world. In this study, a novel functional polyamide polymer p-(Amide)-PAM was synthesized by the two-step method. The experimental results show that p-(Amide)-PAM has good adsorptive properties for99TcO4−/ReO4−and has good selectivity in the nitric acid system. The kinetics of the reaction of p-(Amide)-PAM with99TcO4−/ReO4−was studied. The results show that p-(Amide)-PAM has a fast adsorption rate for99TcO4−/ReO4−, the saturated adsorption capacity reaches 346.02 mg/g, and the material has good reusability. This new polyamide-functionalized polyacrylamide polymer material has good application prospects in the removal of99TcO4−from radioactive wastewater.Keywords:polyacrylamide;polyamidation;99TcO4−/ReO4−removal;polymer adsorption material