Need for Direct Measurements of Coupled Microbiological and Hydrological Processes at Different Scales in Porous Media Systems

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Need for Direct Measurements of Coupled Microbiological and Hydrological Processes at Different Scales in Porous Media Systems. / Geesey, Gill G.; Mitchell, Andrew C.

In: Journal of Hydrologic Engineering, Vol. 13, No. 1, 01.05.2008, p. 28-36.

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@article{8a23830cb21048feab7c85d2bebcb55b,
title = "Need for Direct Measurements of Coupled Microbiological and Hydrological Processes at Different Scales in Porous Media Systems",
abstract = "Reactive transport models contain terms describing microbiological and hydrological processes that control fate and transport of contaminants in porous media. Most models assume that microbial reaction rate is independent of microbial biomass distribution or that biomass is uniformly distributed across media surfaces in a manner that mass transport does not limit reaction rate. Experimental data, as well as some computational models, however, suggest otherwise, indicating a need to experimentally establish how the coupling of microbial biomass and flow distribution influence microbial reaction rates. Nuclear magnetic resonance techniques offer the opportunity to quantify in three dimensions the coupling of microbial biomass and flow velocity distribution in opaque porous media at multiple scales in a noninvasive manner. Experimental data obtained with these techniques can be used to improve the accuracy of boundary conditions used by reactive transport models to predict contaminant fate and transport at the pore and core scales. Further improvements in surface and subsurface magnetic resonance techniques may allow future detection and measurement of microbial biomass distribution in the subsurface at the field scale.",
author = "Geesey, {Gill G.} and Mitchell, {Andrew C.}",
note = "Geesey, G. G., & Mitchell, A. C. (2008). Need for Direct Measurements of Coupled Microbiological and Hydrological Processes at Different Scales in Porous Media Systems. JOURNAL OF HYDROLOGIC ENGINEERING, 13(1), 28-36. SPECIAL ISSUE: Discussions on Metahydrogeology: Research Stocktaking or Identity Crisis? Essays on the Once and Future Merit of Research in Hydrogeology ",
year = "2008",
month = may,
day = "1",
doi = "10.1061/(ASCE)1084-0699(2008)13:1(28)",
language = "English",
volume = "13",
pages = "28--36",
journal = "Journal of Hydrologic Engineering",
issn = "1084-0699",
publisher = "American Society of Civil Engineers",
number = "1",

}

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TY - JOUR

T1 - Need for Direct Measurements of Coupled Microbiological and Hydrological Processes at Different Scales in Porous Media Systems

AU - Geesey, Gill G.

AU - Mitchell, Andrew C.

N1 - Geesey, G. G., & Mitchell, A. C. (2008). Need for Direct Measurements of Coupled Microbiological and Hydrological Processes at Different Scales in Porous Media Systems. JOURNAL OF HYDROLOGIC ENGINEERING, 13(1), 28-36. SPECIAL ISSUE: Discussions on Metahydrogeology: Research Stocktaking or Identity Crisis? Essays on the Once and Future Merit of Research in Hydrogeology

PY - 2008/5/1

Y1 - 2008/5/1

N2 - Reactive transport models contain terms describing microbiological and hydrological processes that control fate and transport of contaminants in porous media. Most models assume that microbial reaction rate is independent of microbial biomass distribution or that biomass is uniformly distributed across media surfaces in a manner that mass transport does not limit reaction rate. Experimental data, as well as some computational models, however, suggest otherwise, indicating a need to experimentally establish how the coupling of microbial biomass and flow distribution influence microbial reaction rates. Nuclear magnetic resonance techniques offer the opportunity to quantify in three dimensions the coupling of microbial biomass and flow velocity distribution in opaque porous media at multiple scales in a noninvasive manner. Experimental data obtained with these techniques can be used to improve the accuracy of boundary conditions used by reactive transport models to predict contaminant fate and transport at the pore and core scales. Further improvements in surface and subsurface magnetic resonance techniques may allow future detection and measurement of microbial biomass distribution in the subsurface at the field scale.

AB - Reactive transport models contain terms describing microbiological and hydrological processes that control fate and transport of contaminants in porous media. Most models assume that microbial reaction rate is independent of microbial biomass distribution or that biomass is uniformly distributed across media surfaces in a manner that mass transport does not limit reaction rate. Experimental data, as well as some computational models, however, suggest otherwise, indicating a need to experimentally establish how the coupling of microbial biomass and flow distribution influence microbial reaction rates. Nuclear magnetic resonance techniques offer the opportunity to quantify in three dimensions the coupling of microbial biomass and flow velocity distribution in opaque porous media at multiple scales in a noninvasive manner. Experimental data obtained with these techniques can be used to improve the accuracy of boundary conditions used by reactive transport models to predict contaminant fate and transport at the pore and core scales. Further improvements in surface and subsurface magnetic resonance techniques may allow future detection and measurement of microbial biomass distribution in the subsurface at the field scale.

UR - http://hdl.handle.net/2160/8219

U2 - 10.1061/(ASCE)1084-0699(2008)13:1(28)

DO - 10.1061/(ASCE)1084-0699(2008)13:1(28)

M3 - Article

VL - 13

SP - 28

EP - 36

JO - Journal of Hydrologic Engineering

JF - Journal of Hydrologic Engineering

SN - 1084-0699

IS - 1

ER -

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