Anmelden

Open Access

  • Startseite
  • Suchen
  • Browsen
  • Veröffentlichen
  • Hilfe
  • Organisationseinheit der BAM

4 Material und Umwelt

  • 4.0 Abteilungsleitung und andere (167) RSS-Feed abonnieren
  • 4.1 Biologische Materialschädigung und Referenzorganismen (331) RSS-Feed abonnieren
  • 4.2 Materialien und Luftschadstoffe (281) RSS-Feed abonnieren
  • 4.3 Schadstofftransfer und Umwelttechnologien (266) RSS-Feed abonnieren
  • 4.4 Thermochemische Reststoffbehandlung und Wertstoffrückgewinnung (271) RSS-Feed abonnieren
  • 4.5 Kunst- und Kulturgutanalyse (212) RSS-Feed abonnieren

Filtern

Autor

  • Bandow, Nicole (1) (entfernen)

Schlagworte

  • Olivine (1) (entfernen)

Organisationseinheit der BAM

  • 4 Material und Umwelt (1) (entfernen)

1 Treffer

  • 1 bis 1
  • CSV
  • RIS
  • 10
  • 20
  • 50
  • 100
Microbial colonization of bare rocks: laboratory biofilm enhances mineral weathering (2014)
Seiffert, Franz ; Bandow, Nicole ; Bouchez, J. ; Von Blanckenburg, F. ; Gorbushina, Anna
A laboratory biofilm consisting of the phototrophic cyanobacterium Nostoc punctiforme ATCC 29133 and the rock-inhabiting ascomycete Knufia petricola CBS 726.95 was tested for its mineral weathering potential. Minerals with different grain sizes and mineralogy were incubated with and without biofilm in batch and in flow-through column experiments. After incubation, the mineral dissolution was quantified analysing (i) leachate chemistry via ICP-OES/MS (inductively coupled plasma optical emission spectrometry/mass spectrometry) and (ii) the residual grains as thin polished sections via SEM/TEM-EDX (scanning electron microscopy/transmission electron microscopy-energy dispersive X-ray spectrometry). Mineral dissolution was enhanced in biotic experiments as compared to abiotic ones, for both batch culture and flow-through approaches. Analyses of thin polished sections confirmed the leaching of these elements near the surface of the mineral grains. These results clearly indicate a biotic effect on the weathering of minerals produced by the laboratory biofilm.
  • 1 bis 1

OPUS4 Logo

  • Kontakt
  • Impressum
  • Sitelinks