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Surface characterization of Acidithiobacillus ferrooxidans adapted to high copper and zinc ions concentration
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
2011 (English)In: Geomicrobiology Journal, ISSN 0149-0451, E-ISSN 1521-0529, Vol. 28, no 3, p. 221-228Article in journal (Refereed) Published
Abstract [en]

Changes in surface chemical properties of Acidithiobacillus ferrooxidans after adaptation to high copper and zinc ion concentration were studied by surface sensitive techniques such as zeta-potential, XPS and FT-IR measurements. The adapted bacteria were also characterized by their surface energies and adhesion capacities on different sulphide minerals. Their surface negative charge was decreased due to changes in the structure of bacterial surface layers. The metal ions adapted cells secreted more extracellular polymeric substances with a modified composition compared to unadapted ferrous ions grown cells. Bacterial cells hydrophilic property increased after adaptation and altered their adhesion behavior to sulphide mineral.

Place, publisher, year, edition, pages
2011. Vol. 28, no 3, p. 221-228
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-10412DOI: 10.1080/01490451.2010.489920ISI: 000288954000004Scopus ID: 2-s2.0-79953191849Local ID: 93835f87-c292-473b-9a9c-ae27dfe1211cOAI: oai:DiVA.org:ltu-10412DiVA, id: diva2:983357
Note
Validerad; 2011; 20110224 (hrao)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Vilinska, AnnamariaKota, Hanumantha Rao

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