Abstract
A new method was discussed to define parameters indicating the extent of colloid deposition onto solid surface, which are important to evaluate the effects of colloid filtration on radionuclide transport in a radioactive waste repository. The deposition coefficients for colloid transport in porous media were determined by the observation of colloid deposition in a parallel-plate channel. The values that were independently derived did not exceed twice as much as deposition coefficients determined by ordinary method, in which the colloid transport model was fitted to colloid breakthrough data obtained from column experiments.
