Determination of kinetic and equilibrium parameters of the batch adsorption of Ni-63 onto Egyptian kaolinite clay

Abstract EN

This study provide the regulatory bodies and the operators that generate and manage radioactive waste with some recommendations on how to meet the IAEA safety requirements for the safe management of radioactive waste.

The Sorption of Ni-63 from aqueous waste solutions by natural kaolinite clay was studied.

The different parameters affecting the sorption capacity of the selected elements by the investigated material have been calculated.

The parameters include solution pH, metal ion concentration and presence of some competing cations.

The metal sorbed percent of the investigated elements was determined for kaolinite clay.

Sorption data have been interpreted in the terms of Langmuir and Freundlich isotherm models.

The metal sorbed percent of Ni-63 on the kaolinite clay sample reached about 84%.

The obtained data showed that kaolinite clay can be considered as an efficient sorbent for the investigated metal cations (Ni-63) from their aqueous solutions.

Therefore, it could be effectively used for the decontamination of waste solutions containing low concentration of Ni-63.

Based on the obtained results, kaolinite clay recommended to be used in decontamination purpose since it is easily to found and low cost.