PMID- 35517729
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220507
IS  - 2046-2069 (Electronic)
IS  - 2046-2069 (Linking)
VI  - 10
IP  - 35
DP  - 2020 May 27
TI  - Microbial-induced calcium carbonate precipitation: an experimental toolbox for in 
      situ and real time investigation of micro-scale pH evolution.
PG  - 20485-20493
LID - 10.1039/d0ra03897k [doi]
AB  - Concrete is the second most consumed product by humans, after water. However, the 
      production of conventional concrete causes more than 5% of anthropogenic CO(2) 
      emissions and therefore there is a need for emission-reduced construction 
      materials. One method to produce a solid, concrete-like construction material is 
      microbial-induced calcium carbonate precipitation (MICP). To get a better 
      understanding of MICP it is important to be able to follow local pH changes in 
      dissolution and precipitation processes of CaCO(3). In this work we present a new 
      method to study processes of MICP at the micro-scale in situ and in real time. We 
      present two different methods to monitor the pH changes during the precipitation 
      process of CaCO(3). In the first method, the average pH of small sample volumes 
      is measured in real time, and pH changes are subsequently correlated with 
      processes in the sample by comparing to optical microscope results. The second 
      method is introduced to follow local pH changes at a grain scale in situ and in 
      real time. Furthermore, local pH changes during the dissolution of CaCO(3) 
      crystals are monitored. We demonstrate that these two methods are powerful tools 
      to investigate the pH changes for both MICP precipitation and CaCO(3) dissolution 
      for knowledge-based improvement of MICP-based material properties.
CI  - This journal is (c) The Royal Society of Chemistry.
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 jennifer.s.zehner@ntnu.no pawel.sikorski@ntnu.no.
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 - Wentzel, Alexander
AU  - Wentzel A
AD  - Department of Biotechnology and Nanomedicine, SINTEF Industry Trondheim 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 jennifer.s.zehner@ntnu.no pawel.sikorski@ntnu.no.
LA  - eng
PT  - Journal Article
DEP - 20200528
PL  - England
TA  - RSC Adv
JT  - RSC advances
JID - 101581657
PMC - PMC9054232
COIS- There are no conflicts to declare.
EDAT- 2020/05/28 00:00
MHDA- 2020/05/28 00:01
PMCR- 2020/05/28
CRDT- 2022/05/06 05:51
PHST- 2020/04/30 00:00 [received]
PHST- 2020/05/20 00:00 [accepted]
PHST- 2022/05/06 05:51 [entrez]
PHST- 2020/05/28 00:00 [pubmed]
PHST- 2020/05/28 00:01 [medline]
PHST- 2020/05/28 00:00 [pmc-release]
AID - d0ra03897k [pii]
AID - 10.1039/d0ra03897k [doi]
PST - epublish
SO  - RSC Adv. 2020 May 28;10(35):20485-20493. doi: 10.1039/d0ra03897k. eCollection 
      2020 May 27.