RT Journal Article
T1 Biocorrosion of Carbon Steel under Controlled Laboratory Conditions
A1 Córdoba García, Francisco
A1 Miguel Sarmiento, Aguasanta
AB In the Iberian Pyritic Belt (SW Europe), Acid Mine Drainage (AMD) is the consequenceof the interaction of physical-chemical and biological factors, where aerobic Fe and/or S oxidizingchemolithotrophic and anaerobic sulfate reducing bacteria play an essential role. As a result, thepolluted waters are highly acidic (pH 2–3) and contain numerous dissolved or suspended metals,which gives them a powerful corrosive action on constructions related to mining activities with higheconomic losses. To verify the role of bacteria in the corrosion of carbon steel, a common material in buildings exposed to corrosion in acidic waters, several experiments have been carried out undercontrolled conditions using carbon steel bars and acidic water containing bacteria consortia froman AMD river of the Iberian Pyritic Belt. In all the experiments carried out, a remarkable oxidationof supplemented iron was observed in the presence of bacteria. Using carbon steel as the sole ironsource, we observed a slight corrosion of the bars, but when culture media was supplemented withelemental sulfur, steel bars was severely damaged. Since the bacteria inoculum come from the surface water, well oxygenated, nutrient-poor river, the obtained results are discussed based on facultative metabolism of acidophilic chemolithotrophic bacteria.
PB MDPI
SN 2075-163X (electrónico)
YR 2023
FD 2023-04
LK https://hdl.handle.net/10272/22043
UL https://hdl.handle.net/10272/22043
LA eng
NO Córdoba, F., & Miguel-Sarmiento, A. (2023). Biocorrosion of Carbon Steel under Controlled Laboratory Conditions. In Minerals (Vol. 13, Issue 5, p. 598). MDPI AG. https://doi.org/10.3390/min13050598
NO This research was funded by Ministry of Science and Innovation (Spain), grant number PID2021-123130OBI00
DS Repositorio Institucional de la Universidad de Huelva
RD 15 jul 2026