A Retardation Factor Considering Solute Transfer Between Mobile and Immobile Water in Porous Media
Egusa, Nobuyuki ; Nakagawa, Kei LU
and Hirata, Tatemasa
(2021)
In Environmental Modeling and Assessment
26(1).
p.103-112
- Abstract
In advective-dispersive simulations of aquifers, retardation factors using linear adsorption isotherms are commonly employed to represent the adsorption-desorption process for solutes in soil. In particular, the retardation factors that use entire pore space (total porosity) or effective pore space (effective porosity) are widely used. Although another retardation factor that describes solute transfer between mobile and immobile water in porous media has been developed, characteristics of the model have not been examined extensively. This retardation factor retains the ease of use and characteristics of the first two models; for example, its breakthrough curve is similar to those generated by models that employ total porosity for... (More)
In advective-dispersive simulations of aquifers, retardation factors using linear adsorption isotherms are commonly employed to represent the adsorption-desorption process for solutes in soil. In particular, the retardation factors that use entire pore space (total porosity) or effective pore space (effective porosity) are widely used. Although another retardation factor that describes solute transfer between mobile and immobile water in porous media has been developed, characteristics of the model have not been examined extensively. This retardation factor retains the ease of use and characteristics of the first two models; for example, its breakthrough curve is similar to those generated by models that employ total porosity for aquifers in which groundwater flow is fast and solute transport by advection and mechanical dispersion is predominant, as well as models that employ effective porosity for aquifers in which groundwater flow is slow, solute transport by molecular diffusion is predominant, and a large amount of adsorption-desorption occurs. It is therefore expected that when performing advective-dispersive simulations of aquifers with complex structures (e.g., aquifers in which sand and clay layers alternate), the reproducibility of the simulation results will be improved by using the retardation factor of this latter model, which considers solute transfer between mobile and immobile water.
(Less)
- author
- Egusa, Nobuyuki
; Nakagawa, Kei
LU
and Hirata, Tatemasa
- publishing date
- 2021-02
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Adsorption-desorption process, Advective-dispersive simulations, Aquifer, Effective porosity, Immobile water, Mobile water, Retardation factor, Total porosity
- in
- Environmental Modeling and Assessment
- volume
- 26
- issue
- 1
- pages
- 10 pages
- publisher
- Springer
- external identifiers
-
- scopus:85090304987
- ISSN
- 1420-2026
- DOI
- 10.1007/s10666-020-09726-6
- language
- English
- LU publication?
- no
- additional info
- Funding Information: This work was supported by JSPS KAKENHI Grant Number JP25340085. Acknowledgments Publisher Copyright: © 2020, Springer Nature Switzerland AG.
- id
- c00e0c4c-7097-4067-947c-f37d287d9f5f
- date added to LUP
- 2021-10-23 14:37:45
- date last changed
- 2022-04-27 05:05:12
@article{c00e0c4c-7097-4067-947c-f37d287d9f5f,
abstract = {{<p>In advective-dispersive simulations of aquifers, retardation factors using linear adsorption isotherms are commonly employed to represent the adsorption-desorption process for solutes in soil. In particular, the retardation factors that use entire pore space (total porosity) or effective pore space (effective porosity) are widely used. Although another retardation factor that describes solute transfer between mobile and immobile water in porous media has been developed, characteristics of the model have not been examined extensively. This retardation factor retains the ease of use and characteristics of the first two models; for example, its breakthrough curve is similar to those generated by models that employ total porosity for aquifers in which groundwater flow is fast and solute transport by advection and mechanical dispersion is predominant, as well as models that employ effective porosity for aquifers in which groundwater flow is slow, solute transport by molecular diffusion is predominant, and a large amount of adsorption-desorption occurs. It is therefore expected that when performing advective-dispersive simulations of aquifers with complex structures (e.g., aquifers in which sand and clay layers alternate), the reproducibility of the simulation results will be improved by using the retardation factor of this latter model, which considers solute transfer between mobile and immobile water.</p>}},
author = {{Egusa, Nobuyuki and Nakagawa, Kei and Hirata, Tatemasa}},
issn = {{1420-2026}},
keywords = {{Adsorption-desorption process; Advective-dispersive simulations; Aquifer; Effective porosity; Immobile water; Mobile water; Retardation factor; Total porosity}},
language = {{eng}},
number = {{1}},
pages = {{103--112}},
publisher = {{Springer}},
series = {{Environmental Modeling and Assessment}},
title = {{A Retardation Factor Considering Solute Transfer Between Mobile and Immobile Water in Porous Media}},
url = {{http://dx.doi.org/10.1007/s10666-020-09726-6}},
doi = {{10.1007/s10666-020-09726-6}},
volume = {{26}},
year = {{2021}},
}