title: Colloid formation during waste form reaction: implications for nuclear waste disposal.
abstract: Insoluble plutonium- and americium-bearing colloidal particles formed during simulated weathering of a high-level nuclear waste glass. Nearly 100 percent of the total plutonium and americium in test ground water was concentrated in these submicrometer particles. These results indicate that models of actinide mobility and repository integrity, which assume complete solubility of actinides in ground water, underestimate the potential for radionuclide release into the environment. A colloid-trapping mechanism may be necessary for a waste repository to meet long-term performance specifications.
authors.forename: J K
authors.initials: JK
authors.lastname: Bates
authors.forename: J P
authors.initials: JP
authors.lastname: Bradley
authors.forename: A
authors.initials: A
authors.lastname: Teetsov
authors.forename: C R
authors.initials: CR
authors.lastname: Bradley
authors.forename: M B
authors.initials: MB
authors.lastname: Ten Brink