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Title (Primary) Schwertmannite formation adjacent to bacterial cells in a mine water treatment plant and in pure cultures of ‘Ferrovum myxofaciens’
Author Hedrich, S.; Lünsdorf, H.; Kleeberg, G.; Heide, G.; Seifert, J.; Schlömann, M.;
Journal Environmental Science & Technology
Year 2011
Department PROTEOM;
Volume 45
Issue 18
Language englisch;
Abstract

Schwertmannite has previously been found in iron- and sulfate-rich mine-waters at pH 2.8-4.5. In the present study schwertmannite (Fe8O8(OH)6SO4) was shown to be the major mineral in a mine water treatment plant at pH 3, in which ferrous iron is mainly oxidized by bacteria belonging to the species ‘Ferrovum myxofaciens’. Strain EHS6, which is closely related to the type strain of ‘Fv. myxofaciens’, was isolated from the pilot plant and characterized as an acidophilic, iron-oxidizing bacterium. In contrast to the pilot plant, the mineral phase formed by a pure culture of ‘Fv. myxofaciens’ EHS6 was a mixture of schwertmannite and jarosite (KFe3(SO4)2(OH)6). In contrast to other reports of neutrophilic, iron-oxidizing bacteria, acidophilic microorganisms in the pilot plant and cultures of strain EHS6 did not show encrustation of the cell surface or deposition of minerals inside the cell, though a few cells appeared to be in contact with jarosite crystals. It was concluded, that no direct biomineralization occurred in the pilot plant or in laboratory cultures. The lack of encrustation of bacterial cells in the pilot plant is considered advantageous since the cells are still able to get in contact with ferrous iron and the iron oxidation process in the mine water treatment plant can proceed.
ID 11437
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=11437
Hedrich, S., Lünsdorf, H., Kleeberg, G., Heide, G., Seifert, J., Schlömann, M. (2011):
Schwertmannite formation adjacent to bacterial cells in a mine water treatment plant and in pure cultures of ‘Ferrovum myxofaciens’
Environ. Sci. Technol. 45 (18), 7685 - 7692