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dc.contributor.authorRøyne, Anja
dc.contributor.authorPhua, Yi Jing
dc.contributor.authorLe, Simone Balzer
dc.contributor.authorEikjeland, Ina Grosås
dc.contributor.authorJosefsen, Kjell Domaas
dc.contributor.authorMarkussen, Sidsel
dc.contributor.authorMyhr, Anders
dc.contributor.authorThrone-Holst, Harald
dc.contributor.authorSikorski, Pawel
dc.contributor.authorWentzel, Alexander
dc.date.accessioned2019-04-23T12:42:31Z
dc.date.accessioned2019-05-27T06:54:03Z
dc.date.available2019-04-23T12:42:31Z
dc.date.available2019-05-27T06:54:03Z
dc.date.issued2019-04-16
dc.identifier.citationRøyne A, Phua YJ, Le SBL, Eikjeland IA, Josefsen KD, Markussen S, Myhr A, Throne-Holst H, Sikorski P, Wentzel A. Towards a low CO2 emission building material employing bacterial metabolism (1/2): The bacterial system and prototype production. PLoS ONE. 2019;14(4)en
dc.identifier.issn1932-6203
dc.identifier.issn1932-6203
dc.identifier.urihttps://hdl.handle.net/10642/7161
dc.description.abstractThe production of concrete for construction purposes is a major source of anthropogenic CO2 emissions. One promising avenue towards a more sustainable construction industry is to make use of naturally occurring mineral-microbe interactions, such as microbial-induced carbonate precipitation (MICP), to produce solid materials. In this paper, we present a new process where calcium carbonate in the form of powdered limestone is transformed to a binder material (termed BioZEment) through microbial dissolution and recrystallization. For the dissolution step, a suitable bacterial strain, closely related to Bacillus pumilus, was isolated from soil near a limestone quarry. We show that this strain produces organic acids from glucose, inducing the dissolution of calcium carbonate in an aqueous slurry of powdered limestone. In the second step, the dissolved limestone solution is used as the calcium source for MICP in sand packed syringe moulds. The amounts of acid produced and calcium carbonate dissolved are shown to depend on the amount of available oxygen as well as the degree of mixing. Precipitation is induced through the pH increase caused by the hydrolysis of urea, mediated by the enzyme urease, which is produced in situ by the bacterium Sporosarcina pasteurii DSM33. The degree of successful consolidation of sand by BioZEment was found to depend on both the amount of urea and the amount of glucose available in the dissolution reaction.en
dc.description.sponsorshipThis study was funded by the Research Council of Norway (www.forskningsradet.no), grant number238849. Norges forskningsråd 238849en
dc.language.isoenen
dc.publisherPublic Library of Scienceen
dc.relation.ispartofseriesPLoS ONE;14 (4): e0212990
dc.relation.urihttps://journals.plos.org/plosone/article?id=10.1371/journal.pone.0212990
dc.rightsArtikkelen er publisert under en Creative Commons-lisens som tillater arkivering av artikkelens publiserte utgave i institusjonelle arkiv. Artikkelen er ledsaget av følgende Open Access-erklæring: © 2019 Røyne et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium,provided the original author and source are credited.en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectLimestonesen
dc.subjectBuilding materialsen
dc.subjectGlucose metabolismsen
dc.subjectGlucoseen
dc.subjectCarbon dioxideen
dc.subjectChemical precipitationen
dc.titleTowards a low CO2 emission building material employing bacterial metabolism (1/2): The bacterial system and prototype productionen
dc.typeJournal articleen
dc.typePeer revieweden
dc.date.updated2019-04-23T12:42:31Z
dc.description.versionpublishedVersionen
dc.identifier.doihttps://dx.doi.org/10.1371/journal.pone.0212990
dc.identifier.cristin1693482
dc.source.journalPLoS ONE
dc.relation.projectIDNorges forskningsråd: 238849


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Artikkelen er publisert under en Creative Commons-lisens som tillater arkivering av artikkelens publiserte utgave i institusjonelle arkiv.

Artikkelen er ledsaget av følgende Open Access-erklæring: © 2019 Røyne et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium,provided the original author and source are credited.
Med mindre annet er angitt, så er denne innførselen lisensiert som Artikkelen er publisert under en Creative Commons-lisens som tillater arkivering av artikkelens publiserte utgave i institusjonelle arkiv. Artikkelen er ledsaget av følgende Open Access-erklæring: © 2019 Røyne et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium,provided the original author and source are credited.