Monitoring bacterially induced calcite precipitation in porous media using magnetic resonance imaging and flow measurements

E. Sham, M. D. Mantle, J. Mitchell, D. J. Tobler, V. R. Phoenix, M. L. Johns

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A range of nuclear magnetic resonance (NMR) techniques are employed to provide novel, non-invasive measurements of both the structure and transport properties of porous media following a biologically mediated calcite precipitation reaction. Both a model glass bead pack and a sandstone rock core were considered. Structure was probed using magnetic resonance imaging (MRI) via a combination of quantitative one-dimensional profiles and three-dimensional images, applied before and after the formation of calcite in order to characterise the spatial distribution of the precipitate. It was shown through modification and variations of the calcite precipitation treatment that differences in the calcite fill would occur but all methods were successful in partially blocking the different porous media. Precipitation was seen to occur predominantly at the inlet of the bead pack, whereas precipitation occurred almost uniformly along the sandstone core. Transport properties are quantified using pulse field gradient (PFG) NMR measurements which provide probability distributions of molecular displacement over a set observation time (propagators), supplementing conventional permeability measurements. Propagators quantify the local effect of calcite formation on system hydrodynamics and the extent of stagnant region formation. Collectively, the combination of NMR measurements utilised here provides a toolkit for determining the efficacy of a biological-precipitation reaction for partially blocking porous materials.

LanguageEnglish
Pages35-43
Number of pages9
JournalJournal of Contaminant Hydrology
Volume152
Early online date22 Jun 2013
DOIs
Publication statusPublished - 30 Sep 2013
Externally publishedYes

Fingerprint

Calcium Carbonate
flow measurement
Flow measurement
Magnetic resonance
Porous materials
porous medium
calcite
Imaging techniques
Monitoring
Magnetic resonance measurement
nuclear magnetic resonance
monitoring
Nuclear magnetic resonance
Sandstone
Transport properties
sandstone
Probability distributions
Spatial distribution
Precipitates
fill

Keywords

  • calcite precipitation
  • MRI
  • NMR
  • porous media
  • S. pasteurii

Cite this

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title = "Monitoring bacterially induced calcite precipitation in porous media using magnetic resonance imaging and flow measurements",
abstract = "A range of nuclear magnetic resonance (NMR) techniques are employed to provide novel, non-invasive measurements of both the structure and transport properties of porous media following a biologically mediated calcite precipitation reaction. Both a model glass bead pack and a sandstone rock core were considered. Structure was probed using magnetic resonance imaging (MRI) via a combination of quantitative one-dimensional profiles and three-dimensional images, applied before and after the formation of calcite in order to characterise the spatial distribution of the precipitate. It was shown through modification and variations of the calcite precipitation treatment that differences in the calcite fill would occur but all methods were successful in partially blocking the different porous media. Precipitation was seen to occur predominantly at the inlet of the bead pack, whereas precipitation occurred almost uniformly along the sandstone core. Transport properties are quantified using pulse field gradient (PFG) NMR measurements which provide probability distributions of molecular displacement over a set observation time (propagators), supplementing conventional permeability measurements. Propagators quantify the local effect of calcite formation on system hydrodynamics and the extent of stagnant region formation. Collectively, the combination of NMR measurements utilised here provides a toolkit for determining the efficacy of a biological-precipitation reaction for partially blocking porous materials.",
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Monitoring bacterially induced calcite precipitation in porous media using magnetic resonance imaging and flow measurements. / Sham, E.; Mantle, M. D.; Mitchell, J.; Tobler, D. J.; Phoenix, V. R.; Johns, M. L.

In: Journal of Contaminant Hydrology, Vol. 152, 30.09.2013, p. 35-43.

Research output: Contribution to journalArticle

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