A Theoretical Approach on the Migration of a Chelating Radionuclide in Porous Medium

다공성 매질에서의 착화하는 방사성핵종의 이동에 대한 이론적 접근

  • Baik, Min-Hoon (Korea Advanced Institute of Science and Technology) ;
  • Lee, Kun-Jai (Korea Advanced Institute of Science and Technology)
  • Published : 1992.12.30

Abstract

A new model was developed in order to investigate the effects of chelating agents on the migration of a radionuclide in the form of ion or chelate. The migration behavior of the chelated radionuclide was analyzed by formulating a convective-dispersion transport equation which included a degradation of chelating agent and chelated radionuclide. The mathematical model was analytically solved and checked with the existing retardation factor. The results show that the migration velocity of the chelated radionuclide was much faster than the ionic one due to the decreased retardation. Therefore, it was concluded that a new remedial action should be developed to reduce the generation and release of chelating agents from the nuclear power plant into the environment.