Description
The modification of chemical speciation or phase change owing to microbial / biological / biochemical activity. Microbes may survive under likely alkaline conditions and areas of enhanced microbial activity may develop.
Category
Category of FEP
Supercontainer EBS
Sub-category
Sub-category of FEP
Chemical processes
Ondraf Niras FEP Number
Ondraf Niras FEP Number
28
FEP Effects
Description of FEP Effects
Metabolites of microbes may form complexes with some radionuclides. Dissolved in the porewater, these metabolites may decrease sorption and increase solubility of the radionuclides concerned. If a high organic load arises, the carbon dioxide produced may affect the properties of the buffer.
NEA TN2 IFEP Reference(s)
Related IFEPs from the NEA TN2 List of Proposed IFEP Revisions [NEA/RWM/R(2013)8]
2.3.5.1 Microbial growth and poisoning (waste package). 2.3.5.2 Microbially/biologically mediated processes (waste package). 3.2.5.1 Microbial growth and poisoning (GDF). 3.2.5.2 Microbially/biologically mediated processes (GDF).