Description
The bentonite porewater chemistry is buffered by ion exchange reactions, mineral equilibria and dissolution of some mineral components of the bentonite. Key features are near neutral pH and reducing conditions (due to canister corrosion products / Fe(II) minerals in bentonite).
OPA Category
Category as used in the OPA assessment
Bentonite buffer
OPA Number
Number as used in the OPA assessment
1.05
Waste Relevance
Classes of waste to which this FEP is relevant
SF/HLW
NEA V1 IFEP Reference(s)
Related IFEPs from the NEA V1 IFEP list from 1999
2.1.04, 2.1.09