Role of barrier geochemistry in near-surface disposal of low level waste

摘要

This paper describes ongoing research at BNFL into geochemistry of barrier materials relevant to the Drigg low level waste disposal site in Cumbria, specifically looking at sorption of key radioelements. Distribution ratio data (RD) have been determined from batch techniques designed to characterize the bulk and allow systematic study of important environmental parameters controlling sorption processes active in the near field. The RD data are presented together with an interpretation of the important physico-chemical conditions that are thought to be regulating sorption.