Rafinat waste that produced by Instalation of Radioisotop Production is contained
uranium. The research of uranium sorption by zeolite Alumino Silico Phosphate (ASP) and
selected of best waste loading for immobilisation of saturated zeolite uranium used resin epoxy
has been done. Uranium used is a simulation waste from uranyl nitrat hexahydrat which has 50
ppm in concentration. Zeolite ASP was made by mixing pure zeolite with Ammonium Dihydrogen
Phosphate (ADHP). This research was done to variate the factor that influence the sorption
process. Which are composition of zeolite ASP,retention time, and pH. The result of selected
variable will be used for making saturated zeolite uranium will be immobilized with epoxy resin
with variation of waste loading.
Optimum condition of uranium sorption reached on zeolite ASP 1:1 with pH 7 and
retention time for 12 minutes with uranium removal efficiency 51,1 %. Base on density,
compressive strenght, and leaching rate ,the best result for polymer-waste block is on 20 %
waste loading. In that condition the density for polymer waste block is 1,0538 gram/cm3
, the
compreesive strenght 19,36 kN/cm3
and the leaching rate is not detected.
Key word: Sorption, zeolite ASP, waste loading, epoxy resi
