| |
| Web URL(s): | https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj2001.6541056x
Last checked: 02/28/2024
Access conditions: Item is within a limited-access website
https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj2001.6541056x
Last checked: 02/28/2024
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Zhou, Liuzong;
Selim, H. M. |
|---|
| Author Affiliation: | Agronomy Department, Louisiana Agricultural Experimental Station, LSU Agricultural Center, Baton Rouge, LA |
|---|
| Title: | Solute transport in layered soils: Nonlinear and kinetic reactivity |
|---|
| Section: | Soil physics
Other records with the "Soil physics" Section
|
|---|
| Source: | Soil Science Society of America Journal. Vol. 65, No. 4, July/August 2001, p. 1056-1064. |
|---|
| Publishing Information: | Madison, WI: Soil Science Society of America |
|---|
| # of Pages: | 9 |
|---|
| Keywords: | TIC Keywords: Transport (chemical); Soil layering; Kinetics; Soil profiles; Adsorption; Calcium; Magnesium; Physical properties of soil; Chemical properties of soil; Models
|
|---|
| Abstract/Contents: | "In this study, solute transport in mulitilayered soils where steady flow is dominant was investigated. We considered nonreactive as well as reactive solutes in layered soils with emphasis on nonlinear solute reactivity with the soil matrix. For individual soil layers, solute-retention mechanisms considered were linear, nonlinear, Langmuir, first-, second-, and nth-order kinetics, and irrevesible reactions. The convective-dispersive equation (CDE) for reactive solutes was solved using the finite difference method. First-type and a combination of first- and third-type boundary conditions (BCs) for the interface between soil layers were tested. Unlike the first-type BC, the combined first- and third-type BC always achieved a good solute mass balance in multilayered soils. Physical and chemical properties of each soil layer were assumed to differ significantly from one another. For all retention mechanisms used, our simulation results indicated that solute breakthrough curves (BTCs) were similar, regardless of the layering sequence in a soil profile. This finding is consistent with an earler finding (Selim et al., 1977), where a linear adsorption mechanism was dominant and contrary to that of Bosma and van der Zee (1992) for nonlinear adsorption. Experimental results based on miscible displacements from soil columns of a two-layer system [sand over Sharkey (very-fine, smectitic, thermic Chromic Epiaquests) clay and Sharkey clay over sand] support our simulation results. Specifically, BTCs for pulse inputs for tritium, as well as for the Ca-Mg system, support the above conclusion. All tritium and Ca-Mg BTCs were well predicted with our multilayered model where independently derived solute physical and retention parameters were implemented." |
|---|
| Language: | English |
|---|
| References: | 17 |
|---|
| Note: | Tables
Graphs
Diagrams |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zhou, L., and H. M. Selim. 2001. Solute transport in layered soils: Nonlinear and kinetic reactivity. Soil Sci. Soc. Am. J. 65(4):p. 1056-1064. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=74672 |
| If there are problems with this record, send us feedback about record 74672. |
| Choices for finding the above item: |
|---|
| Web URL(s):
https://acsess.onlinelibrary.wiley.com/doi/10.2136/sssaj2001.6541056x
Last checked: 02/28/2024
Access conditions: Item is within a limited-access website
https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2136/sssaj2001.6541056x
Last checked: 02/28/2024
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: S 590 .S65 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
