HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (2) Citing Articles via Google Scholar Google Scholar Articles by Wang, H. Articles by Persaud, N. Search for Related Content PubMed Articles by Wang, H. Articles by Persaud, N. Agricola Articles by Wang, H. Articles by Persaud, N. Related Collections Soil Methods/Instrumentation Laboratory Column Studies Evolution Predictive soil mapping Experiment Design

Miscible Displacement of Initial Solute Distributions in Laboratory Columns

^a Soil and Water Science Dep., Univ. of Florida, Gainesville, FL 32611
^b Dep. of Crop and Soil Environmental Sciences, Virginia Tech, Blacksburg, VA 24061-0404

View larger version (39K): [in a new window]   Fig. 1. Schematic of the laboratory column system that was developed for conducting the miscible displacement experiments with a free-inlet boundary, showing experimental column system (I), injection assembly (II), and detail of a needle (III).

View larger version (25K): [in a new window]   Fig. 2. Breakthrough curves calculated using the convection-dispersion equation for treatments where the injected solute was assumed to be normally distributed with 2 of 5, 10, 20, and 40% of L. Treatment denoted as 0% represents an injected solute distribution described as a Dirac delta function. In all cases, the total mass of solute injected = 1 mmol, porosity = 0.33, and L = 37.5 cm.

View larger version (26K): [in a new window]   Fig. 3. Breakthrough curves calculated using the convection-dispersion equation subject to different boundary conditions for treatments where the injected solute was assumed to be normally distributed with 2 of 5, 10, 20, and 40% of L. Treatment denoted as 0% represents an injected solute distribution described as a Dirac delta function. In all cases, the total mass of solute injected = 1 mmol, porosity = 0.33, L = 37.5 cm, and Pe = 5.

View larger version (16K): [in a new window]   Fig. 4. Experimental breakthrough curves corresponding to the replicate with fitted -value closest to the mean value for the different injection volume treatments in Table 1.