Transformation of iron sulfide by oil field microorganisms and their inhibition by sulfur/polysulfide

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dc.contributor.advisorVoordouw, Gerrit
dc.contributor.authorLin, Shiping
dc.date.accessioned2017-12-18T21:37:15Z
dc.date.available2017-12-18T21:37:15Z
dc.date.issued2008
dc.descriptionBibliography: p. 101-106en
dc.description.abstractIron sulfide (FeS) causes problems in oil reservoirs. Nitrate reducing-sulfide oxidizing bacteria (NR-SOB) cannot remove precipitated FeS, though they are able to utilize dissolved sulfide. However, nitrite, the product of NR-SOB can promote the transformation of FeS to greigite (Fe3S4) with the help of sulfate-reducing bacteria (SRB). The role of SRB in this transformation is to convert amorphous FeS to tetragonal FeS, mackinawite. Nitrite chemically reacts with sulfide, the product of SRB to form sulfur/polysulfide, which then works as a weak oxidant to transform mackinawite to greigite. In addition, sulfur/polysulfide, the reaction product of nitrite with sulfide is an inhibitor of SRB growth, but not all SRB are inhibited by sulfur/polysulfide. The hep] and hcp2 genes, which encode hybrid cluster proteins, are involved in the metabolism of sulfur/polysulfide. SRB with these genes are able to overcome the inhibition from sulfur/polysulfide, whereas mutant strains lacking these genes are more severely inhibited.
dc.format.extentxi, 153 leaves : ill. ; 30 cm.en
dc.identifier.citationLin, S. (2008). Transformation of iron sulfide by oil field microorganisms and their inhibition by sulfur/polysulfide (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/1916en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/1916
dc.identifier.urihttp://hdl.handle.net/1880/102917
dc.language.isoeng
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.titleTransformation of iron sulfide by oil field microorganisms and their inhibition by sulfur/polysulfide
dc.typemaster thesis
thesis.degree.disciplineBiological Sciences
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
ucalgary.thesis.accessionTheses Collection 58.002:Box 1804 520708967
ucalgary.thesis.notesUARCen
ucalgary.thesis.uarcreleaseyen
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