Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1111/1462-2920.15658
Lizenz creative commons licence
Titel (primär) Iron corrosion by methanogenic archaea characterized by stable isotope effects and crust mineralogy
Autor Tamisier, M.; Schmidt, M.; Vogt, C.; Kümmel, S.; Stryhanyuk, H.; Musat, N.; Richnow, H.-H.; Musat, F.
Quelle Environmental Microbiology
Erscheinungsjahr 2022
Department ISOBIO
Band/Volume 24
Heft 2
Seite von 583
Seite bis 595
Sprache englisch
Topic T7 Bioeconomy
Keywords corrosion, methanogenic archaea, methane, stable isotopes, fractionation factors, corrosion crust, mineralogy, crust conductivity
UFZ Querschnittsthemen ProVIS;
Abstract Carbon and hydrogen stable isotope effects associated with methane formation by the corrosive archaeon Methanobacterium strain IM1 were determined during growth with hydrogen and iron. Isotope analyses were complemented by structural, elemental and molecular composition analyses of corrosion crusts. During growth with H2, strain IM1 formed methane with average δ13C of −43.5‰ and δ2H of −370‰. Corrosive growth led to methane more depleted in 13C, with average δ13C ranging from −56‰ to −64‰ during the early and the late growth phase, respectively. The corresponding δ2H were less impacted by the growth phase, with average values ranging from −316 to −329‰. The stable isotope fractionation factors, α13CCO2/CH4, were 1.026 and 1.042 for hydrogenotrophic and corrosive growth, respectively. Corrosion crusts formed by strain IM1 have a domed structure, appeared electrically conductive, and were composed of siderite, calcite, and iron sulfide, the latter formed by precipitation of sulfide (from culture medium) with ferrous iron generated during corrosion. Strain IM1 cells were found attached to crust surfaces and encrusted deep inside crust domes. Our results may assist to diagnose methanogens-induced corrosion in the field, and suggest that intrusion of sulfide in anoxic settings may stimulate corrosion by methanogenic archaea via formation of semi-conductive crusts.
dauerhafte UFZ-Verlinkung
Tamisier, M., Schmidt, M., Vogt, C., Kümmel, S., Stryhanyuk, H., Musat, N., Richnow, H.-H., Musat, F. (2022):
Iron corrosion by methanogenic archaea characterized by stable isotope effects and crust mineralogy
Environ. Microbiol. 24 (2), 583 - 595 10.1111/1462-2920.15658