PMID- 34684789
OWN - NLM
STAT- MEDLINE
DCOM- 20211116
LR  - 20211116
IS  - 1420-3049 (Electronic)
IS  - 1420-3049 (Linking)
VI  - 26
IP  - 20
DP  - 2021 Oct 14
TI  - Role of Na-Montmorillonite on Microbially Induced Calcium Carbonate 
      Precipitation.
LID - 10.3390/molecules26206211 [doi]
LID - 6211
AB  - The use of additives has generated significant attention due to their extensive 
      application in the microbially induced calcium carbonate precipitation (MICP) 
      process. This study aims to discuss the effects of Na-montmorillonite (Na-MMT) on 
      CaCO(3) crystallization and sandy soil consolidation through the MICP process. 
      Compared with the traditional MICP method, a larger amount of CaCO(3) precipitate 
      was obtained. Moreover, the reaction of Ca(2+) ions was accelerated, and bacteria 
      were absorbed by a small amount of Na-MMT. Meanwhile, an increase in the total 
      cementing solution (TCS) was not conducive to the previous reaction. This problem 
      was solved by conducting the reaction with Na-MMT. The polymorphs and 
      morphologies of the CaCO(3) precipitates were tested by using X-ray diffraction 
      and scanning electron microscopy. Further, when Na-MMT was used, the morphology 
      of CaCO(3) changed from an individual precipitate to agglomerations of the 
      precipitate. Compared to the experiments without Na-MMT in the MICP process, the 
      addition of Na-MMT significantly reduced the hydraulic conductivity (HC) of sandy 
      soil consolidated.
FAU - Tang, Guowang
AU  - Tang G
AD  - School of Engineering and Technology, China University of Geosciences, Beijing 
      100083, China.
FAU - Jia, Cangqin
AU  - Jia C
AD  - School of Engineering and Technology, China University of Geosciences, Beijing 
      100083, China.
AD  - Key Laboratory of Deep Geodrilling Technology, Ministry of Land and Resources, 
      China University of Geosciences, Beijing 100083, China.
FAU - Wang, Guihe
AU  - Wang G
AD  - School of Engineering and Technology, China University of Geosciences, Beijing 
      100083, China.
FAU - Yu, Peizhi
AU  - Yu P
AD  - School of Engineering and Technology, China University of Geosciences, Beijing 
      100083, China.
FAU - Zhang, Haonan
AU  - Zhang H
AD  - School of Engineering and Technology, China University of Geosciences, Beijing 
      100083, China.
LA  - eng
GR  - 41772388/Peizhi Yu/
GR  - KF2019X/Cangqin Jia/
PT  - Journal Article
DEP - 20211014
PL  - Switzerland
TA  - Molecules
JT  - Molecules (Basel, Switzerland)
JID - 100964009
RN  - 0 (Sand)
RN  - 0 (Soil)
RN  - 1302-78-9 (Bentonite)
RN  - H0G9379FGK (Calcium Carbonate)
SB  - IM
MH  - Bentonite/chemistry/*metabolism
MH  - Biotechnology
MH  - Calcium Carbonate/isolation & purification/*metabolism
MH  - Chemical Precipitation
MH  - Crystallization
MH  - Microscopy, Electron, Scanning
MH  - Sand/chemistry
MH  - Soil/chemistry
MH  - Sporosarcina/growth & development/*metabolism
MH  - X-Ray Diffraction
PMC - PMC8538570
OTO - NOTNLM
OT  - Na-montmorillonite
OT  - bio-mineralization
OT  - calcium carbonate
OT  - hydraulic conductivity
OT  - morphology of precipitates
COIS- The authors declare that they have no conflict of interest.
EDAT- 2021/10/24 06:00
MHDA- 2021/11/17 06:00
PMCR- 2021/10/14
CRDT- 2021/10/23 01:19
PHST- 2021/08/20 00:00 [received]
PHST- 2021/10/08 00:00 [revised]
PHST- 2021/10/11 00:00 [accepted]
PHST- 2021/10/23 01:19 [entrez]
PHST- 2021/10/24 06:00 [pubmed]
PHST- 2021/11/17 06:00 [medline]
PHST- 2021/10/14 00:00 [pmc-release]
AID - molecules26206211 [pii]
AID - molecules-26-06211 [pii]
AID - 10.3390/molecules26206211 [doi]
PST - epublish
SO  - Molecules. 2021 Oct 14;26(20):6211. doi: 10.3390/molecules26206211.