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Calcite seed-assisted microbial induced carbonate precipitation (MICP)

Microbial-induced calcium carbonate precipitation (MICP) is a biological process inducing biomineralization of CaCO(3). This can be used to form a solid, concrete-like material. To be able to use MICP successfully to produce solid materials, it is important to understand the formation process of the...

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Detalles Bibliográficos
Autores principales: Zehner, Jennifer, Røyne, Anja, Sikorski, Pawel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7872276/
https://www.ncbi.nlm.nih.gov/pubmed/33561160
http://dx.doi.org/10.1371/journal.pone.0240763
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author Zehner, Jennifer
Røyne, Anja
Sikorski, Pawel
author_facet Zehner, Jennifer
Røyne, Anja
Sikorski, Pawel
author_sort Zehner, Jennifer
collection PubMed
description Microbial-induced calcium carbonate precipitation (MICP) is a biological process inducing biomineralization of CaCO(3). This can be used to form a solid, concrete-like material. To be able to use MICP successfully to produce solid materials, it is important to understand the formation process of the material in detail. It is well known that crystallization surfaces can influence the precipitation process. Therefore, we present in this contribution a systematic study investigating the influence of calcite seeds on the MICP process. We focus on the changes in the pH and changes of the optical density (OD) signal measured with absorption spectroscopy to analyze the precipitation process. Furthermore, optical microscopy was used to visualize the precipitation processes in the sample and connect them to changes in the pH and OD. We show, that there is a significant difference in the pH evolution between samples with and without calcite seeds present and that the shape of the pH evolution and the changes in OD can give detailed information about the mineral precipitation and transformations. In the presented experiments we show, that amorphous calcium carbonate (ACC) can also precipitate in the presence of initial calcite seeds and this can have implications for consolidated MICP materials.
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spelling pubmed-78722762021-02-19 Calcite seed-assisted microbial induced carbonate precipitation (MICP) Zehner, Jennifer Røyne, Anja Sikorski, Pawel PLoS One Research Article Microbial-induced calcium carbonate precipitation (MICP) is a biological process inducing biomineralization of CaCO(3). This can be used to form a solid, concrete-like material. To be able to use MICP successfully to produce solid materials, it is important to understand the formation process of the material in detail. It is well known that crystallization surfaces can influence the precipitation process. Therefore, we present in this contribution a systematic study investigating the influence of calcite seeds on the MICP process. We focus on the changes in the pH and changes of the optical density (OD) signal measured with absorption spectroscopy to analyze the precipitation process. Furthermore, optical microscopy was used to visualize the precipitation processes in the sample and connect them to changes in the pH and OD. We show, that there is a significant difference in the pH evolution between samples with and without calcite seeds present and that the shape of the pH evolution and the changes in OD can give detailed information about the mineral precipitation and transformations. In the presented experiments we show, that amorphous calcium carbonate (ACC) can also precipitate in the presence of initial calcite seeds and this can have implications for consolidated MICP materials. Public Library of Science 2021-02-09 /pmc/articles/PMC7872276/ /pubmed/33561160 http://dx.doi.org/10.1371/journal.pone.0240763 Text en © 2021 Zehner et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Zehner, Jennifer
Røyne, Anja
Sikorski, Pawel
Calcite seed-assisted microbial induced carbonate precipitation (MICP)
title Calcite seed-assisted microbial induced carbonate precipitation (MICP)
title_full Calcite seed-assisted microbial induced carbonate precipitation (MICP)
title_fullStr Calcite seed-assisted microbial induced carbonate precipitation (MICP)
title_full_unstemmed Calcite seed-assisted microbial induced carbonate precipitation (MICP)
title_short Calcite seed-assisted microbial induced carbonate precipitation (MICP)
title_sort calcite seed-assisted microbial induced carbonate precipitation (micp)
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7872276/
https://www.ncbi.nlm.nih.gov/pubmed/33561160
http://dx.doi.org/10.1371/journal.pone.0240763
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