Laboratory experiments were designed to investigate the separation and stabilization of cesium metal. Cesium was removed from simulated waste through sorption under certain physicochemical conditions. Silica sand (locally purchased) was used to remove cesium from simulated liquid waste. The range of pH and temperature was optimized and maximum removal (94 - 98 %) of cesium was achieved with pH 10 at temperature <$E 36~symbol Р roman C>. Under optimized conditions with temperature range of 301 - 315 K <$E DELTA roman H>, <$E DELTA roman S> and <$E DELTA roman G sub {309 roman K}> for 150 ppm solution are - <$E 27,22~symbol С~0,18> KJ/mol, - <$E 74,1~symbol С~0,96> J/mol and - <$E 3071~symbol С~2,1> KJ/mol respectively, and for 200 ppm solution thermodynamic entities are <$E DELTA roman H~=~-20,2~symbol С~0,20> KJ/mol, <$E DELTA roman S~=~-47,86~symbol С~0,66> J/mol and <$E DELTA roman G sub {301 roman K}~=~-4344~symbol С~3,7> KJ/mol. The sorbed metal ion has chances of desorption under changed physicochemical conditions in final disposal. To overcome this problem the final "secondary waste (metals on sorbents)" was stabilized by converting it into a stable vitreous borosilicate matrix through vitrification process to prevent leaching. It was found that the sorbed cesium was evaporated during heating at <$E 1250~symbol Р roman C>. The evaporation of cesium during vitrification was overcome by modifying the process. This modified vitrification process is found excellent to immobilize the sorbed cesium. Stability was tested by desorption attempts at different pH.

  Якщо, ви не знайшли інформацію про автора(ів) публікації, маєте бажання виправити або відобразити більш докладну інформацію про науковців України запрошуємо заповнити "Анкету науковця"