PMID- 33561160
OWN - NLM
STAT- MEDLINE
DCOM- 20210708
LR  - 20240330
IS  - 1932-6203 (Electronic)
IS  - 1932-6203 (Linking)
VI  - 16
IP  - 2
DP  - 2021
TI  - Calcite seed-assisted microbial induced carbonate precipitation (MICP).
PG  - e0240763
LID - 10.1371/journal.pone.0240763 [doi]
LID - e0240763
AB  - Microbial-induced calcium carbonate precipitation (MICP) is a biological process 
      inducing biomineralization of CaCO3. 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.
FAU - Zehner, Jennifer
AU  - Zehner J
AUID- ORCID: 0000-0002-5660-022X
AD  - Department of Physics, Norwegian University of Science and Technology (NTNU), 
      Trondheim, Norway.
FAU - Royne, Anja
AU  - Royne A
AUID- ORCID: 0000-0002-6868-6251
AD  - The Njord Centre, Department of Physics, University of Oslo (UiO), Oslo, Norway.
FAU - Sikorski, Pawel
AU  - Sikorski P
AUID- ORCID: 0000-0001-9413-1623
AD  - Department of Physics, Norwegian University of Science and Technology (NTNU), 
      Trondheim, Norway.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20210209
PL  - United States
TA  - PLoS One
JT  - PloS one
JID - 101285081
RN  - 0 (Carbonates)
RN  - 0 (Minerals)
RN  - 0 (Soil)
RN  - H0G9379FGK (Calcium Carbonate)
RN  - Sporosarcina pasteurii
SB  - IM
MH  - Biomineralization/*physiology
MH  - Calcium Carbonate/*chemistry/metabolism
MH  - Carbonates/chemistry
MH  - Chemical Precipitation
MH  - Construction Materials/*microbiology
MH  - Microscopy/methods
MH  - Minerals/chemistry
MH  - Soil
MH  - Sporosarcina/metabolism
PMC - PMC7872276
COIS- The authors have declared that no competing interests exist.
EDAT- 2021/02/10 06:00
MHDA- 2021/07/09 06:00
PMCR- 2021/02/09
CRDT- 2021/02/09 17:12
PHST- 2020/10/11 00:00 [received]
PHST- 2020/12/30 00:00 [accepted]
PHST- 2021/02/09 17:12 [entrez]
PHST- 2021/02/10 06:00 [pubmed]
PHST- 2021/07/09 06:00 [medline]
PHST- 2021/02/09 00:00 [pmc-release]
AID - PONE-D-20-31364 [pii]
AID - 10.1371/journal.pone.0240763 [doi]
PST - epublish
SO  - PLoS One. 2021 Feb 9;16(2):e0240763. doi: 10.1371/journal.pone.0240763. 
      eCollection 2021.