Importance of extracellular polymeric substances from Thiobacillus ferrooxidans for bioleaching

Tilman Gehrke, J. Telegdi, Dominique Thierry, Wolfgang Sand

Research output: Contribution to journalArticle

325 Citations (Scopus)

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 electrochemical interaction with the negatively charged pyrite surface. EPS from sulfur cells possess increased hydrophobic properties and do not attach to pyrite, indicating adaptability to the substrate or substratum.

Original languageEnglish
Pages (from-to)2743-2747
Number of pages5
JournalApplied and Environmental Microbiology
Volume64
Issue number7
Publication statusPublished - Jul 1998

Fingerprint

Acidithiobacillus ferrooxidans
Thiobacillus
pyrite
Sulfur
sulfur
exopolymer
lipopolysaccharides
Lipopolysaccharides
leaching
Iron
Ions
iron
ions
Bacteria
substrate
bacterium
ion
bacteria
cells

ASJC Scopus subject areas

  • Environmental Science(all)
  • Biotechnology
  • Microbiology

Cite this

Importance of extracellular polymeric substances from Thiobacillus ferrooxidans for bioleaching. / Gehrke, Tilman; Telegdi, J.; Thierry, Dominique; Sand, Wolfgang.

In: Applied and Environmental Microbiology, Vol. 64, No. 7, 07.1998, p. 2743-2747.

Research output: Contribution to journalArticle

Gehrke, Tilman ; Telegdi, J. ; Thierry, Dominique ; Sand, Wolfgang. / Importance of extracellular polymeric substances from Thiobacillus ferrooxidans for bioleaching. In: Applied and Environmental Microbiology. 1998 ; Vol. 64, No. 7. pp. 2743-2747.
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