Sorption of UO2 2+ onto calcium carbonate nanoparticles
He-Huaxue yu Fangshe Huaxue/Journal of Nuclear and Radiochemistry(2012)
摘要
Calcium carbonate nanoparticles were prepared in the presence of poly(styrene sulfonate) (PSS). The samples were characterized by scanning electron microscopy (SEM). The sorption of UO2 2+ onto CaCO3 nanoparticles was investigated as a function of pH, ionic strength and temperature under ambient conditions using batch technique. The results indicate that sorption of UO2 2+ onto CaCO3 nanoparticles increases with increasing pH and decreasing ionic strength. With increasing temperature, maximum adsorption of UO2 2+ increases. The thermodynamic data indicate that the sorption of UO2 2+ onto CaCO3 nanoparticles is an endothermic and spontaneous process.
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关键词
Calcium carbonate nanoparticles,Sorption,UO2 2+
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