Mixing and reactive fronts in the subsurface

M Rolle, T Le Borgne - Reviews in Mineralogy and …, 2019 - pubs.geoscienceworld.org
The interplay between mixing and reactive processes plays a pivotal role in a range of
biogeochemical processes controlling the transport, transformation and turnover of chemical …

Temporal behavior of a solute cloud in a heterogeneous porous medium: 1. Point‐like injection

M Dentz, H Kinzelbach, S Attinger… - Water Resources …, 2000 - Wiley Online Library
We investigate the temporal behavior of transport coefficients in a model for transport of a
solute through a spatially heterogeneous saturated aquifer. In the framework of a stochastic …

Characterization of mixing and dilution in heterogeneous aquifers by means of local temporal moments

OA Cirpka, PK Kitanidis - Water Resources Research, 2000 - Wiley Online Library
Breakthrough curves of a conservative tracer in a heterogeneous two‐dimensional aquifer
are analyzed by means of their temporal moments. The average velocity and the …

Concentration fluctuations and dilution in aquifers

V Kapoor, PK Kitanidis - Water resources research, 1998 - Wiley Online Library
The concentration of solute undergoing advection and local dispersion in a random
hydraulic conductivity field is analyzed to quantify its variability and dilution. Detailed …

On the importance of diffusion and compound-specific mixing for groundwater transport: An investigation from pore to field scale

M Rolle, G Chiogna, DL Hochstetler… - Journal of contaminant …, 2013 - Elsevier
Mixing processes significantly affect and limit contaminant transport and transformation rates
in the subsurface. The correct quantification of mixing in groundwater systems must account …

Imaging and quantification of preferential solute transport in soil macropores

J Koestel, M Larsbo - Water Resources Research, 2014 - Wiley Online Library
Despite significant advances during the last decades, there are still many processes related
to nonequilibrium flow and transport in macroporous soil that are far from completely …

Effects of compound-specific dilution on transient transport and solute breakthrough: A pore-scale analysis

M Rolle, PK Kitanidis - Advances in Water Resources, 2014 - Elsevier
This pore-scale modeling study in saturated porous media shows that compound-specific
effects are important not only at steady-state and for the lateral displacement of solutes with …

Bimolecular second‐order reactions in spatially varying flows: Segregation induced scale‐dependent transformation rates

V Kapoor, LW Gelhar… - Water Resources …, 1997 - Wiley Online Library
To quantify chemical transformations in natural hydrologic environments, their coupling with
spatially varying flows needs to be understood. Consider the elementary bimolecular …

An advective‐dispersive stream tube approach for the transfer of conservative‐tracer data to reactive transport

OA Cirpka, PK Kitanidis - Water Resources Research, 2000 - Wiley Online Library
Conservative‐tracer data are used for the parameterization of mixing‐controlled reactive
transport. Temporal moments of the tracer breakthrough curve integrated over the outflow …

Stochastic continuum transport equations for field‐scale solute transport: Overview of theoretical and experimental results

J Vanderborght, R Kasteel… - Vadose Zone Journal, 2006 - Wiley Online Library
One‐dimensional transport models that predict field‐scale averaged solute fluxes are often
used to estimate the risk of nonpoint source groundwater contamination by widespread …