Examination of Solute Transport in an Undisturbed Soil Column Using Electrical Resistance Tomography

1996 ◽  
Vol 32 (4) ◽  
pp. 763-769 ◽  
Author(s):  
Andrew Binley ◽  
Siobhan Henry-Poulter ◽  
Ben Shaw
Keyword(s):  
Solute Transport ◽  
Electrical Resistance ◽  
Soil Column ◽  
Electrical Resistance Tomography ◽  
Undisturbed Soil

A Two-Domain Approach to Model Solute Transport in an Undisturbed Soil Column using X-Ray CAT Scanning

2013 ◽  
Author(s):  
J. Perret ◽  
S.O. Prasher ◽  
A. Kanztas ◽  
and C. Langford
Keyword(s):  
Solute Transport ◽  
Soil Column ◽  
Undisturbed Soil ◽  
X Ray

scholarly journals A Nonlinear Solute Transport Model and Data Reconstruction with Parameter Determination in an Undisturbed Soil-Column Experiment

2011 ◽  
Vol 2011 ◽  
pp. 1-14 ◽  
Author(s):  
Gongsheng Li ◽  
De Yao ◽  
Yongzai Wang ◽  
Xianzheng Jia
Keyword(s):  
Inverse Problem ◽  
Solute Transport ◽  
Transport Model ◽  
Soil Column ◽  
Parameter Determination ◽  
Nonlinear Transport ◽  
Inversion Algorithm ◽  
Unknown Parameters ◽  
Undisturbed Soil ◽  
Optimal Perturbation

A real undisturbed soil-column infiltrating experiment in Zibo, Shandong, China, is investigated, and a nonlinear transport model for a solute ion penetrating through the column is put forward by using nonlinear Freundlich's adsorption isotherm. Since Freundlich's exponent and adsorption coefficient and source/sink terms in the model cannot be measured directly, an inverse problem of determining these parameters is encountered based on additional breakthrough data. Furthermore, an optimal perturbation regularization algorithm is introduced to determine the unknown parameters simultaneously. Numerical simulations are carried out and then the inversion algorithm is applied to solve the real inverse problem and reconstruct the measured data successfully. The computational results show that the nonlinear advection-dispersion equation discussed in this paper can be utilized by hydrogeologists to research solute transport behaviors with nonlinear adsorption in porous medium.

scholarly journals Evaluation of Solute Transport in Undisturbed Soil Column under Steady Unsaturated Flow Conditions.

1997 ◽  
pp. 61-70
Author(s):  
Masato Horiuchi ◽  
Yoriteru Inoue ◽  
Shinsuke Morisawa ◽  
Barokah Aliyanta
Keyword(s):  
Solute Transport ◽  
Unsaturated Flow ◽  
Soil Column ◽  
Flow Conditions ◽  
Undisturbed Soil

scholarly journals Bayesian Simultaneous Estimation of Unsaturated Flow and Solute Transport Parameters from a Laboratory Infiltration Experiment

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1660 ◽  
Author(s):  
Anis Younes ◽  
Jabran Zaouali ◽  
Sabri Kanzari ◽  
Francois Lehmann ◽  
Marwan Fahs
Keyword(s):  
Mass Transport ◽  
Solute Transport ◽  
Unsaturated Flow ◽  
Soil Column ◽  
Accurate Estimation ◽  
Soil Parameters ◽  
Simultaneous Estimation ◽  
Transport Parameters ◽  
Undisturbed Soil ◽  
Infiltration Experiment

Numerical modeling has become an irreplaceable tool for the investigation of water flow and solute transport in the unsaturated zone. The use of this tool for real situations is often faced with lack of knowledge of hydraulic and soil transport parameters. In this study, advanced experimental and numerical techniques are developed for an accurate estimation of the soil parameters. A laboratory unsaturated flow and solute transport experiment is conducted on a large undisturbed soil column of around 40 cm length. Bromide, used as a nonreactive contaminant, is injected at the surface of the undisturbed soil, followed by a leaching phase. The pressure measurements at different locations along the soil column as well as the outflow bromide concentration are collected during the experiment and used for the statistical calibration of flow and solute transport. The Richards equation, combined with constitutive relations for water content and permeability, is used to describe unsaturated flow. Both linear and non-equilibrium mobile–immobile transport models are investigated for the solute transport. All hydraulic and mass transport parameters are inferred using a one-step Bayesian estimation with the Markov chain Monte Carlo sampler. The results prove that the pressure and concentration measurements are able to identify almost all hydraulic and mass transport parameters. The mobile–immobile transport model better reproduces the infiltration experiment. It produces narrower uncertainty intervals for soil parameters and predictive output concentrations.

scholarly journals Optimisation of Sensor Electrode Size for in Electrical Resistance Tomography Implementing Conducting Boundary Strategy

2021 ◽  
Vol 1874 (1) ◽  
pp. 012077
Author(s):  
Suzanna Ridzuan Aw ◽  
Ruzairi Abdul Rahim ◽  
Fazlul Rahman Mohd Yunus ◽  
Mohd Hafiz Fazalul Rahiman ◽  
Yasmin Abdul Wahab ◽  
...  
Keyword(s):  
Electrical Resistance ◽  
Electrical Resistance Tomography ◽  
Electrode Size ◽  
Sensor Electrode
Sign in / Sign up

Export Citation Format

Share Document