PMID- 35474837
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220716
IS  - 2470-1343 (Electronic)
IS  - 2470-1343 (Linking)
VI  - 7
IP  - 15
DP  - 2022 Apr 19
TI  - Microbial Carbonation of Monocalcium Silicate.
PG  - 12524-12535
LID - 10.1021/acsomega.1c05264 [doi]
AB  - Biocement formed through microbially induced calcium carbonate precipitation 
      (MICP) is an emerging biotechnology focused on reducing the environmental impact 
      of concrete production. In this system, CO(2) species are provided via ureolysis 
      by Sporosarcina pasteurii (S. pasteurii) to carbonate monocalcium silicate for 
      MICP. This is one of the first studies of its kind that uses a solid-state 
      calcium source, while prior work has used highly soluble forms. Our study focuses 
      on microbial physiological, chemical thermodynamic, and kinetic studies of MICP. 
      Monocalcium silicate incongruently dissolves to form soluble calcium, which must 
      be coupled with CO(2) release to form calcium carbonate. Chemical kinetic 
      modeling shows that calcium solubility is the rate-limiting step, but the 
      addition of organic acids significantly increases the solubility, enabling 
      extensive carbonation to proceed up to 37 mol %. The microbial urease activity by 
      S. pasteurii is active up to pH 11, 70  degrees C, and 1 mol L(-1) CaCl(2), producing 
      calcite as a means of solidification. Cell-free extracts are also effective 
      albeit less robust at extreme pH, producing calcite with different physical 
      properties. Together, these data help determine the chemical, biological, and 
      thermodynamic parameters critical for scaling microbial carbonation of 
      monocalcium silicate to high-density cement and concrete.
CI  - (c) 2022 The Authors. Published by American Chemical Society.
FAU - Guzman, Michael S
AU  - Guzman MS
AUID- ORCID: 0000-0002-3888-8055
AD  - Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 
      Livermore, California 94550, United States.
FAU - Iyer, Jaisree
AU  - Iyer J
AUID- ORCID: 0000-0002-1154-3030
AD  - Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 
      Livermore, California 94550, United States.
FAU - Kim, Paul
AU  - Kim P
AUID- ORCID: 0000-0002-1544-2309
AD  - Department of Materials Science & Engineering, Rutgers-The State University of 
      New Jersey, Piscataway, New Jersey 08854, United States.
FAU - Kopp, Daniel
AU  - Kopp D
AD  - Department of Materials Science & Engineering, Rutgers-The State University of 
      New Jersey, Piscataway, New Jersey 08854, United States.
FAU - Dong, Ziye
AU  - Dong Z
AUID- ORCID: 0000-0002-0419-8523
AD  - Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 
      Livermore, California 94550, United States.
FAU - Foroughi, Paniz
AU  - Foroughi P
AD  - Department of Materials Science & Engineering, Rutgers-The State University of 
      New Jersey, Piscataway, New Jersey 08854, United States.
FAU - Yung, Mimi C
AU  - Yung MC
AD  - Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 
      Livermore, California 94550, United States.
FAU - Riman, Richard E
AU  - Riman RE
AUID- ORCID: 0000-0002-4289-5768
AD  - Department of Materials Science & Engineering, Rutgers-The State University of 
      New Jersey, Piscataway, New Jersey 08854, United States.
FAU - Jiao, Yongqin
AU  - Jiao Y
AUID- ORCID: 0000-0002-6798-5823
AD  - Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, 
      Livermore, California 94550, United States.
LA  - eng
PT  - Journal Article
DEP - 20220406
PL  - United States
TA  - ACS Omega
JT  - ACS omega
JID - 101691658
PMC - PMC9025989
COIS- The authors declare no competing financial interest.
EDAT- 2022/04/28 06:00
MHDA- 2022/04/28 06:01
PMCR- 2022/04/06
CRDT- 2022/04/27 06:15
PHST- 2021/09/22 00:00 [received]
PHST- 2022/03/24 00:00 [accepted]
PHST- 2022/04/27 06:15 [entrez]
PHST- 2022/04/28 06:00 [pubmed]
PHST- 2022/04/28 06:01 [medline]
PHST- 2022/04/06 00:00 [pmc-release]
AID - 10.1021/acsomega.1c05264 [doi]
PST - epublish
SO  - ACS Omega. 2022 Apr 6;7(15):12524-12535. doi: 10.1021/acsomega.1c05264. 
      eCollection 2022 Apr 19.