PMID- 24147737
OWN - NLM
STAT- MEDLINE
DCOM- 20150925
LR  - 20191210
IS  - 1520-5851 (Electronic)
IS  - 0013-936X (Linking)
VI  - 47
IP  - 23
DP  - 2013
TI  - A field and modeling study of fractured rock permeability reduction using 
      microbially induced calcite precipitation.
PG  - 13637-43
LID - 10.1021/es402601g [doi]
AB  - Microbially induced calcite precipitation (MICP) offers an attractive alternative 
      to traditional grouting technologies for creating barriers to groundwater flow 
      and containing subsurface contamination, but has only thus far been successfully 
      demonstrated at the laboratory scale and predominantly in porous media. We 
      present results of the first field experiments applying MICP to reduce fractured 
      rock permeability in the subsurface. Initially, the ureolytic bacterium, 
      Sporosarcina pasteurii, was fixed in the fractured rock. Subsequent injection of 
      cementing fluid comprising calcium chloride and urea resulted in precipitation of 
      large quantities (approximately 750 g) of calcite; significant reduction in the 
      transmissivity of a single fracture over an area of several m(2) was achieved in 
      around 17 h of treatment. A novel numerical model is also presented which 
      simulates the field data well by coupling flow and bacterial and solute reactive 
      transport processes including feedback due to aperture reduction via calcite 
      precipitation. The results show that MICP can be successfully manipulated under 
      field conditions to reduce the permeability of fractured rock and suggest that an 
      MICP-based technique, informed by numerical models, may form the basis of viable 
      solutions to aid pollution mitigation.
FAU - Cuthbert, Mark O
AU  - Cuthbert MO
AD  - Water Sciences (Hydrogeology), School of Geography, Earth and Environmental 
      Sciences, University of Birmingham , Birmingham, B15 2TT, U.K. .
FAU - McMillan, Lindsay A
AU  - McMillan LA
FAU - Handley-Sidhu, Stephanie
AU  - Handley-Sidhu S
FAU - Riley, Michael S
AU  - Riley MS
FAU - Tobler, Dominique J
AU  - Tobler DJ
FAU - Phoenix, Vernon R
AU  - Phoenix VR
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20131111
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 8W8T17847W (Urea)
RN  - H0G9379FGK (Calcium Carbonate)
RN  - M4I0D6VV5M (Calcium Chloride)
SB  - IM
MH  - Calcium Carbonate/*metabolism
MH  - Calcium Chloride/metabolism
MH  - Chemical Precipitation
MH  - Groundwater/*chemistry
MH  - *Models, Theoretical
MH  - Permeability
MH  - Porosity
MH  - Sporosarcina/*metabolism
MH  - Urea/metabolism
MH  - *Water Movements
MH  - Water Pollution/*prevention & control
EDAT- 2013/10/24 06:00
MHDA- 2015/09/26 06:00
CRDT- 2013/10/24 06:00
PHST- 2013/10/24 06:00 [entrez]
PHST- 2013/10/24 06:00 [pubmed]
PHST- 2015/09/26 06:00 [medline]
AID - 10.1021/es402601g [doi]
PST - ppublish
SO  - Environ Sci Technol. 2013;47(23):13637-43. doi: 10.1021/es402601g. Epub 2013 Nov 
      11.