Description
Reduction-oxidation (or Redox) reactions are reversible chemical processes usually involving the transfer of electrons, involving a reaction with oxygen (oxidation) to form an oxide and a reaction with hydrogen (reduction) to form a hydride. Eh is a measure of the redox potential, and will vary in time and place within the EBS.
Category
Category of FEP
Sub-category
Sub-category of FEP
Ondraf Niras FEP Number
Ondraf Niras FEP Number
FEP Effects
Description of FEP Effects
The redox conditions affect the chemical processes taking place in the EBS. Eh conditions are influenced by the natural composition of groundwater and potentially by radiolysis close to the waste, as well as by the chemical state within the evolving EBS and waste. Redox fronts separate regions that may be characterised, in broad terms, as having different redox potentials. Changes in Eh conditions may occur as a result of diffusion processes, or in response to groundwater flow.
NEA TN2 IFEP Reference(s)
Related IFEPs from the NEA TN2 List of Proposed IFEP Revisions [NEA/RWM/R(2013)8]