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dc.contributor.authorSeifan, Mostafaen_NZ
dc.contributor.authorSamani, Ali Khajehen_NZ
dc.contributor.authorBerenjian, Aydinen_NZ
dc.date.accessioned2017-07-31T22:30:34Z
dc.date.available2017-04-01en_NZ
dc.date.available2017-07-31T22:30:34Z
dc.date.issued2017en_NZ
dc.identifier.citationSeifan, M., Samani, A. K., & Berenjian, A. (2017). New insights into the role of pH and aeration in the bacterial production of calcium carbonate (CaCO₃). Applied Microbiology and Biotechnology, 101(8), 3131–3142. https://doi.org/10.1007/s00253-017-8109-8en
dc.identifier.issn0175-7598en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/11243
dc.description.abstractOver recent years, the implementation of microbially produced calcium carbonate (CaCO₃) in different industrial and environmental applications has become an alternative for conventional approaches to induce CaCO₃ precipitation. However, there are many factors affecting the biomineralization of CaCO₃, which may restrict its application. In this study, we investigated the effects of pH and aeration as the main two influential parameters on bacterial precipitation of CaCO₃. The results showed that the aeration had a significant effect on bacterial growth and its rise from 0.5 to 4.5 SLPM could produce 4.2 times higher CaCO₃ precipitation. The increase of pH to 12 resulted in 6.3-fold increase in CaCO₃ precipitation as compared to uncontrolled-pH fermentation. Morphological characterization showed that the pH is an effective parameter on CaCO₃ morphology. Calcite was found to be the predominant precipitate during aeration-controlled fermentations, while vaterite was mainly produced at lower pH (up to 10) over controlled-pH fermentations. Further increase in pH resulted in a morphological transition, and vaterite transformed to calcite at the pH ranges between 10 and 12.
dc.format.mimetypeapplication/pdf
dc.language.isoenen_NZ
dc.publisherSpringeren_NZ
dc.rights© Springer-Verlag Berlin Heidelberg 2017.This is the author's accepted version. The final publication is available at Springer via dx.doi.org/10.1007/s00253-017-8109-8
dc.subjectScience & Technologyen_NZ
dc.subjectLife Sciences & Biomedicineen_NZ
dc.subjectBiotechnology & Applied Microbiologyen_NZ
dc.subjectBacteriaen_NZ
dc.subjectCaCO3en_NZ
dc.subjectConcreteen_NZ
dc.subjectpHen_NZ
dc.subjectAerationen_NZ
dc.subjectMorphologyen_NZ
dc.subjectSELF-HEALING CONCRETEen_NZ
dc.subjectPRECIPITATIONen_NZ
dc.subjectBIOMINERALIZATIONen_NZ
dc.subjectMICROORGANISMSen_NZ
dc.subjectENVIRONMENTSen_NZ
dc.subjectLIMESTONEen_NZ
dc.subjectCAPTUREen_NZ
dc.subjectCAVEen_NZ
dc.subjectACIDen_NZ
dc.titleNew insights into the role of pH and aeration in the bacterial production of calcium carbonate (CaCO₃)en_NZ
dc.typeJournal Article
dc.identifier.doi10.1007/s00253-017-8109-8en_NZ
dc.relation.isPartOfApplied Microbiology and Biotechnologyen_NZ
pubs.begin-page3131
pubs.elements-id191739
pubs.end-page3142
pubs.issue8en_NZ
pubs.publication-statusPublisheden_NZ
pubs.volume101en_NZ
dc.identifier.eissn1432-0614en_NZ


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