Processes in microbial transport in the natural subsurface

Ginn, Timothy R.; Wood, Brian D.; Nelson, K. E.; Scheibe, Timothy D.; Murphy, Ellyn M.; Clement, T. Prabhakar

doi:10.1016/s0309-1708(02)00046-5

Cited by 262 publications

(134 citation statements)

References 157 publications

(142 reference statements)

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“…Additionally, there is a large number of models for bio-reactive transport in groundwater which are constrained to single-phase flow. An overview of modeling approaches can be found in the papers of [18] and [28]. In the recent paper, a new model is developed at macroscopic scale which couples the flow and transport of two mobile phases to the bio-chemical processes of multiple microbial species.…”

Section: Two-phase Bio-reactive Transport Modelmentioning

confidence: 99%

Hydrogenization of underground storage of natural gas

et al. 2015

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The intermittent production of the renewable energy imposes the necessity to temporarily store it. Large amounts of exceeding electricity can be stored in geological strata in the form of hydrogen. The conversion of hydrogen to electricity and vice versa can be performed in electrolyzers and fuel elements by chemical methods. The nowadays technical solution accepted by the European industry consists of injecting small concentrations of hydrogen in the existing storages of natural gas. The progressive development of this technology will finally lead to the creation of underground storages of pure hydrogen. Due to the low viscosity and low density of hydrogen, it is expected that the problem of an unstable displacement, including viscous fingering and gravity overriding, will be more pronounced. Additionally, the injection of hydrogen in geological strata could encounter chemical reactivity induced by various species of microorganisms that consume hydrogen for their metabolism. One of the products of such reactions is methane, produced from Sabatier reaction between H 2 and CO 2 . Other hydrogenotrophic reactions could be caused by acetogenic archaea, sulfate-reducing bacteria and iron-reducing bacteria. In the present paper, a mathematical model is presented which is capable to reflect DuMuX was used to model the evolution of a hypothetical underground storage of hydrogen. We have revealed that the behavior of an underground hydrogen storage is different than that of a natural gas storage. Both, the hydrodynamic and the bio-chemical effects, contribute to the different characteristics.

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Section: Two-phase Bio-reactive Transport Modelmentioning

confidence: 99%

Hydrogenization of underground storage of natural gas

et al. 2015

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“…Well-established theories exist for explaining and modeling particle transport through homogeneous porous layers (McDowell-Boyer et al 1986;Murphy and Ginn 2000). Many of these have been further developed to account for biological processes such as motility, inactivation, and temporal changes in bacterial surface properties (Ginn et al 2002). However, findings obtained under controlled experimental conditions are not always easy to extrapolate to the field.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 1 provides an overview of relevant processes that may operate in karst environments and how they affect microbial mobility. Those processes that determine the transport of pathogenic bacteria in the subsurface may be classified into three groups (Ginn et al 2002;Foppen and Schijven 2006): hydraulic properties of the media, abiotic interaction with surfaces encountered, and biological processes specific to microorganisms, e.g., inactivation.…”

Section: Introductionmentioning

confidence: 99%

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Use of particulate surrogates for assessing microbial mobility in subsurface ecosystems

Sinreich

Flynn²,

Zopfi

2008

Hydrogeol J

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Mass fluxes from the ground surface can play a vital role in influencing groundwater ecosystems. Rates of delivery may influence intact ecosystem composition, while fluxes of substances associated with anthropogenic activity may critically alter the functioning of associated microbial assemblages. Field-based tracing experiments offer a valuable means of understanding mass transport rates and mechanisms, particularly in complex heterogeneous epikarst systems overlying vulnerable fissured aquifers. A short-term tracer experiment monitoring solute and particle tracer concentrations after they passed through a 10-m-thick sequence of limestone, capped by a thin soil, revealed rapid travel times and variable attenuation rates for the substances employed. Results demonstrated that particle tracers have shorter average travel times and can reach the subsurface in higher concentrations and over shorter times than non-reactive solutes. High recovery rates for the bacterial tracer Ralstonia eutropha H16 contrasted strongly with those of similarly sized fluorescent polystyrene microspheres, highlighting the importance of physico-chemical surface characteristics of particle tracers. Complementary laboratory batch experiments examined the role played by organic and inorganic soil/rock surfaces on particle tracer attenuation. Findings suggest that biofilms may significantly promote transport of particulate material below ground, i.e., the delivery of allochthonous microorganisms to karst groundwater.

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“…Detachment is set to zero when adsorption duration exceeds a given residence time and bacteria become irreversibly adsorbed. This concept of residence time dependant detachment rate was generalized and formalized by Ginn et al [2002].…”

Section: Introductionmentioning

confidence: 99%

Mobilization and preferential transport of soil particles during infiltration: A core‐scale modeling approach

Majdalani

Michel

Pietro

et al. 2007

Water Resources Research

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[1] Understanding particle movement in soils is a major concern for both geotechnics and soil physics with regard to environmental protection and water resources management. This paper describes a model for mobilization and preferential transport of soil particles through structured soils. The approach combines a kinematic-dispersive wave model for preferential water flow with a convective-dispersive equation subject to a source/sink term for particle transport and mobilization. Particle detachment from macropore walls is considered during both the steady and transient water flow regimes. It is assumed to follow first-order kinetics with a varying detachment efficiency, which depends on the history of the detachment process. Estimates of model parameters are obtained by comparing simulations with experimental particle breakthrough curves obtained during infiltrations through undisturbed soil columns. Both water flux and particle concentrations are satisfactorily simulated by the model. Particle mobilization parameters favoring both attachment and detachment of particles are related to the incoming solution ionic strength by a Fermi-type function.Citation: Majdalani, S., E. Michel, L. Di Pietro, R. Angulo-Jaramillo, and M. Rousseau (2007), Mobilization and preferential transport of soil particles during infiltration: A core-scale modeling approach, Water Resour. Res., 43, W05401,

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Processes in microbial transport in the natural subsurface

Cited by 262 publications

References 157 publications

Hydrogenization of underground storage of natural gas

Hydrogenization of underground storage of natural gas

Use of particulate surrogates for assessing microbial mobility in subsurface ecosystems

Mobilization and preferential transport of soil particles during infiltration: A core‐scale modeling approach

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