In recent years,resins prepared via molecular imprinting technology have received considerable attention owing to their recognition and selective adsorption.This paper deals with the comparative investigation between ...In recent years,resins prepared via molecular imprinting technology have received considerable attention owing to their recognition and selective adsorption.This paper deals with the comparative investigation between a uranyl sulphate imprinted ion-exchange based on self-assembling molecular imprinting technology and two kinds of commercial uranium resins(the medium pore resin D263 and strong base resin 201x7).The studies were focused on their kinetics performance,adaptability toward pH,and performance of saturation and elution in laboratory-scale column.The results show that the imprinted ion exchange resin has the fast kinetics,high adaptability toward pH,and good adsorption and elution performance.展开更多
Kinetics of chloride/sulfate,chloride/nitrate and nitrate/sulfate forward exchanges and reverse exchanges at solution concentrations of 1N,0.2N and 0.02 N on 201×7 strong base anion exchange resin,respectively,ha...Kinetics of chloride/sulfate,chloride/nitrate and nitrate/sulfate forward exchanges and reverse exchanges at solution concentrations of 1N,0.2N and 0.02 N on 201×7 strong base anion exchange resin,respectively,have been examined at 25℃.It is found that the forward and the reverse exchange rates of the two given ions at low solution concentration,respectively,under identical conditions can be controlled by different mechanisms,while those at high solution concentration are all controlled by particle diffusion.The ternary exchange rates of sulfate/(chloride+nitrate) and nitrate/(chloride+sulfate)have also been examined.展开更多
基金This project was supported by the Foundation of the Ministry of Education of China for Outstanding Young Teachers in University(Grant No.2000K5214)we thank our colleagues for their collaborative and complementary efforts in this research program.
文摘In recent years,resins prepared via molecular imprinting technology have received considerable attention owing to their recognition and selective adsorption.This paper deals with the comparative investigation between a uranyl sulphate imprinted ion-exchange based on self-assembling molecular imprinting technology and two kinds of commercial uranium resins(the medium pore resin D263 and strong base resin 201x7).The studies were focused on their kinetics performance,adaptability toward pH,and performance of saturation and elution in laboratory-scale column.The results show that the imprinted ion exchange resin has the fast kinetics,high adaptability toward pH,and good adsorption and elution performance.
基金The project supported by National Natural Science Foundation of China.
文摘Kinetics of chloride/sulfate,chloride/nitrate and nitrate/sulfate forward exchanges and reverse exchanges at solution concentrations of 1N,0.2N and 0.02 N on 201×7 strong base anion exchange resin,respectively,have been examined at 25℃.It is found that the forward and the reverse exchange rates of the two given ions at low solution concentration,respectively,under identical conditions can be controlled by different mechanisms,while those at high solution concentration are all controlled by particle diffusion.The ternary exchange rates of sulfate/(chloride+nitrate) and nitrate/(chloride+sulfate)have also been examined.
