Gehrke, Tilman; Telegdi, Judit; Thierry, Dominique; Sand, Wolfgang:
Importance of extracellular polymeric substances from Thiobacillus ferrooxidans for bioleaching.
1998
In: Applied and Environmental Microbiology (Appl.Environ.Microbiol.), Jg. 64 (1998), Heft 7, S. 2743 - 2747
Artikel/Aufsatz in Zeitschrift1998Chemie
Titel:
Importance of extracellular polymeric substances from Thiobacillus ferrooxidans for bioleaching.
Autor(in):
Gehrke, TilmanLSF; Telegdi, Judit; Thierry, Dominique; Sand, WolfgangLSF
Erscheinungsjahr
1998

Abstract:

Leaching bacteria such as Thiobacillus ferrooxidans attach to pyrite or sulfur by means of extracellular polymeric substances (EPS) (lipopolysaccharides). The primary attachment to pyrite at pH 2 is mediated by exopolymer-complexed iron (III) ions in an electrochem. interaction with the neg. charged pyrite surface. EPS from sulfur cells possess increased hydrophobic properties and do not attach to pyrite, indicating adaptability to the substrate or substratum.