Microbiologically Influenced Corrosion of Aerospace-Grade Aluminum by SRB-Enriched Biofilms Isolated from the Mars Analog Lake Salda.

ABSTRACT: Lake Salda in Türkiye serves as a valuable Earth analog for studies of the properties of Mars due to its mineralogical and microbiological similarities to Jezero Crater on Mars. This study investigated the role of sulfate-reducing bacteria (SRB) enrichment culture isolated from Lake Salda on the microbiologically influenced corrosion (MIC) of an aluminum alloy (AA7075) using electrochemical, microbiological, molecular, and spectroscopic methods. Potentiodynamic polarization (PDP) tests confirmed SRB-enriched biofilm significantly accelerated corrosion. Fourier Transformed Infrared Spectroscopy (FTIR) further distinguished the control and biotic surfaces, showing the replacement of a 980 cm^-1 polysaccharide band with a 1075 cm^-1 cyclic polysaccharide vibration in SRB-c

SUBMITTER: Unsal T 

PROVIDER: S-EPMC12654286 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature