The role of hydrogenases in the anaerobic microbiologically influenced corrosion of steels.
The direct electron transfer between 316 L stainless steel and the NAD-dependent hydrogenase from Ralstonia eutropha was studied by spectroelectrochemistry. The presence of hydrogenase and NAD+ clearly increased the quantity of electricity, which was consumed during the electrolysis performed at potential lower than -0.70 V/SCE. The involvement of hydrogenase in the cathodic depolarisation theory was discussed in the light of these results.
Da Silva
S
S
Université Paul Sabatier, Laboratoire de Génie Chimique, CNRS, 118 route de Narbonne, 31062 Toulouse, France. dasilva@chimie.ups-tlse.fr
Basséguy
R
R
Bergel
A
A
D001673:Biodegradation, Environmental; D003343:Corrosion; D020118:Cupriavidus necator / Q000201:enzymology / Q000378:metabolism*; D006864:Hydrogenase / Q000378:metabolism*; D009243:NAD / Q000378:metabolism; D013232:Steel
D009243:NAD; D013232:Steel; D006864:Hydrogenase