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Unveiling the effect of magnetite on the synergistic action of deposits and microorganisms on carbon steel corrosion

journal contribution
submitted on 2024-07-28, 10:39 and posted on 2024-07-28, 12:13 authored by Maria A. Diaz-Mateus, Laura L. Machuca, Hanan Farhat, Silvia J. Salgar-Chaparro

The synergistic corrosion effect of microorganisms and deposits on carbon steel corrosion was assessed with magnetite and sand. In the presence of the microbial consortium with magnetite, uniform corrosion rates were 3.5 times higher (0.611 mm/year) than the sum of the corrosion rates promoted by the consortium and deposit separately (0.056 and 0.110 mm/year, respectively). Conversely, with sand, uniform corrosion rates were only 1.5 times higher (0.093 mm/year) than the sum of the corrosion rates promoted by the consortium and deposit separately (0.056 and 0.006 mm/year, respectively). The heightened synergistic effect is attributed to magnetite's semi-conductive nature.

Other Information

Published in: Corrosion Science
License: http://creativecommons.org/licenses/by/4.0/
See article on publisher's website: https://dx.doi.org/10.1016/j.corsci.2024.111940

Funding

Hamad Bin Khalifa University, Qatar Environment and Energy Research Institute (N/A).

History

Language

  • English

Publisher

Elsevier

Publication Year

  • 2024

License statement

This Item is licensed under the Creative Commons Attribution 4.0 International License.

Institution affiliated with

  • Hamad Bin Khalifa University
  • Qatar Environment and Energy Research Institute - HBKU
  • Corrosion Center - QEERI