PMID- 27997145
OWN - NLM
STAT- MEDLINE
DCOM- 20170719
LR  - 20180919
IS  - 1520-5851 (Electronic)
IS  - 0013-936X (Linking)
VI  - 51
IP  - 3
DP  - 2017 Feb 7
TI  - Detecting Microbially Induced Calcite Precipitation in a Model Well-Bore Using 
      Downhole Low-Field NMR.
PG  - 1537-1543
LID - 10.1021/acs.est.6b04833 [doi]
AB  - Microbially induced calcite precipitation (MICP) has been widely researched 
      recently due to its relevance for subsurface engineering applications including 
      sealing leakage pathways and permeability modification. These applications of 
      MICP are inherently difficult to monitor nondestructively in time and space. 
      Nuclear magnetic resonance (NMR) can characterize the pore size distributions, 
      porosity, and permeability of subsurface formations. This investigation used a 
      low-field NMR well-logging probe to monitor MICP in a sand-filled bioreactor, 
      measuring NMR signal amplitude and T(2) relaxation over an 8 day experimental 
      period. Following inoculation with the ureolytic bacteria, Sporosarcina 
      pasteurii, and pulsed injections of urea and calcium substrate, the NMR measured 
      water content in the reactor decreased to 76% of its initial value. T(2) 
      relaxation distributions bifurcated from a single mode centered about 
      approximately 650 ms into a fast decaying population (T(2) less than 10 ms) and a 
      larger population with T(2) greater than 1000 ms. The combination of changes in 
      pore volume and surface minerology accounts for the changes in the T(2) 
      distributions. Destructive sampling confirmed final porosity was approximately 
      88% of the original value. These results indicate the low-field NMR well-logging 
      probe is sensitive to the physical and chemical changes caused by MICP in a 
      laboratory bioreactor.
FAU - Kirkland, Catherine M
AU  - Kirkland CM
AD  - Center for Biofilm Engineering, Montana State University , Bozeman, Montana 
      59717, United States.
AD  - Department of Chemical and Biological Engineering, Montana State University , 
      Bozeman, Montana 59717, United States.
FAU - Zanetti, Sam
AU  - Zanetti S
AD  - Center for Biofilm Engineering, Montana State University , Bozeman, Montana 
      59717, United States.
FAU - Grunewald, Elliot
AU  - Grunewald E
AD  - Vista Clara Inc. , 12201 Cyrus Way Ste. 104, Mukilteo, Washington 98275, United 
      States.
FAU - Walsh, David O
AU  - Walsh DO
AD  - Vista Clara Inc. , 12201 Cyrus Way Ste. 104, Mukilteo, Washington 98275, United 
      States.
FAU - Codd, Sarah L
AU  - Codd SL
AUID- ORCID: 0000-0003-3859-8565
AD  - Center for Biofilm Engineering, Montana State University , Bozeman, Montana 
      59717, United States.
AD  - Department of Mechanical and Industrial Engineering, Montana State University , 
      Bozeman, Montana 59717, United States.
FAU - Phillips, Adrienne J
AU  - Phillips AJ
AD  - Center for Biofilm Engineering, Montana State University , Bozeman, Montana 
      59717, United States.
AD  - Department of Civil Engineering, Montana State University , Bozeman, Montana 
      59717, United States.
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20170109
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - H0G9379FGK (Calcium Carbonate)
SB  - IM
MH  - Calcium Carbonate/*chemistry
MH  - Magnetic Resonance Imaging
MH  - Magnetic Resonance Spectroscopy
MH  - Porosity
MH  - Sporosarcina/*metabolism
EDAT- 2016/12/21 06:00
MHDA- 2017/07/20 06:00
CRDT- 2016/12/21 06:00
PHST- 2016/12/21 06:00 [pubmed]
PHST- 2017/07/20 06:00 [medline]
PHST- 2016/12/21 06:00 [entrez]
AID - 10.1021/acs.est.6b04833 [doi]
PST - ppublish
SO  - Environ Sci Technol. 2017 Feb 7;51(3):1537-1543. doi: 10.1021/acs.est.6b04833. 
      Epub 2017 Jan 9.