Flow-through column experiments are intended to provide a more realistic simulation of dynamic field conditions and to quantify the movement of contaminants relative to groundwater flow.
Flow-through column experiments are often a step in-between batch experiments, which only test the performance of a specific chemical formulation of a remediation agent (e.g. surfactant, or solvent), and more complicated flume or tank experiments which are the last laboratory step before a test in the field. The column experimetns are less effort than a flume test, but test also aspects of the chemical formulation and the displacement processes happening inside the porous medium itself.
Column experiments provide a way to quantify either reaction or sorption rate kinetics for a porous medium. I think this is the primary reason for using them.
Dear Dr. Mamdouh
The links below give you some spreadsheet models for saturated flow porous medium in a vertical column and variability saturated flow in a horizontal tube and Darcy experiment. I think they can be extended to simulate contaminant transport.
I hope they may help.
Amro
https://www.researchgate.net/publication/235955596_A_spreadsheet_model_to_solve_steady_state_groundwater_flow_equation_in_a_non-homogeneous_soil_column
https://www.researchgate.net/publication/259007771_Solving_Steady_State_Unsaturated_Flow_in_a_Horizontal_Column_(Unsaturated_Darcy_Experiment)_Using_Spreadsheet?ev=prf_pub
https://www.researchgate.net/profile/Amro_Elfeki/publications/?page=8&sorting=newest&pubType=dataset
Data A spreadsheet model to solve steady state groundwater flow e...
Data Solving Steady State Unsaturated Flow in a Horizontal Column...
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