Microtopographical and hydrophysical controls on subsurface flow and solute transport: A continuous solute release experiment in a subarctic bog

2018 ◽  
Vol 32 (19) ◽  
pp. 2963-2975 ◽  
Author(s):  
Nicole Elizabeth Balliston ◽  
Colin Patrick Ross McCarter ◽  
Jonathan Stephen Price
Keyword(s):  
Solute Transport ◽  
Subsurface Flow ◽  
Release Experiment ◽  
Solute Release

Selected HYDRUS modules for modeling subsurface flow and contaminant transport as influenced by biological processes at various scales

Biologia ◽  
2009 ◽  
Vol 64 (3) ◽  
Author(s):  
Jirka Šimůnek ◽  
Diederik Jacques ◽  
Navin Twarakavi ◽  
Martinus Genuchten
Keyword(s):  
Solute Transport ◽  
Contaminant Transport ◽  
Water Flow ◽  
Subsurface Flow ◽  
Subsurface Water ◽  
Biological Processes ◽  
The Past ◽  
Software Packages ◽  
Saturated Media

AbstractA large number of modifications or special modules of the HYDRUS software packages have been developed during the past several years to evaluate the effects of a range of biohydrological processes on subsurface water flow and the transport of various chemicals and contaminants. The objective of this manuscript is to briefly review the different modules that were included, and to present various applications illustrating the effects of biological processes on water flow and solute transport and reactions in variably-saturated media.

A Study of K Variability and Its Effect on Solute Transport in Subsurface-Flow Sand Filters by Measurement and Modelling

2005 ◽  
Vol 40 (6-7) ◽  
pp. 1123-1132 ◽  
Author(s):  
BJØRN KLØVE ◽  
SHULAN XU ◽  
ANNA LINDAHL ◽  
ANDERS WÖRMAN ◽  
ANNE-KRISTINE SØVIK
Keyword(s):  
Solute Transport ◽  
Subsurface Flow ◽  
Sand Filters

Understanding the Influence of Spatially Varying Retardation Effect on the Solute Transport

2003 ◽  
Vol 807 ◽  
Author(s):  
Yuichi Niibori ◽  
Satoko Shimoda ◽  
Kouichi Tanaka ◽  
Osamu Tochiyama
Keyword(s):  
Mathematical Model ◽  
Solute Transport ◽  
Release Profile ◽  
Retardation Effect ◽  
Two Dimensional ◽  
Transport Distance ◽  
Retardation Coefficient ◽  
Total Transport ◽  
The Media ◽  
Solute Release

ABSTRACTA two-dimensional approach to understanding the heterogeneity in retardation effect governing the solute transport was carried out. To express the simplified spatial distribution of retardation effect, this study prepared parallel flat boards packed with two kinds of solid materials, where these materials were not mixed, but arranged as two kinds of the layers in a direction parallel to the flow. The ratio of the width of the constituent layer to the total transport distance was assumed to be one of key parameters describing the solute release profile transported through the media. As a tracer, Eu3+ in HNO3 solution was used, and its breakthrough curve was monitored in the experiments. In order to determine the retardation coefficient of the each layer, the retardation coefficients was obtained from the separate column experiment. Moreover, the permeabilities of both layers were confirmed to be almost identical from the one-dimensional, column experiments. A mathematical model was constructed to express the two-dimensional advection and dispersion of the solute through the media with the distribution of retardation effect. The proposed mathematical model and the experimental results showed good agreements, and indicated that the solute release profile strongly depended on the ratio of the width of the constituent layers to the total transport distance and the standard deviation of the retardation.

Control of Rate of Solute Transport in Newly Developed Portable Agar Gel Blood Purification System

1998 ◽  
Vol 2 (1) ◽  
pp. 67-70
Author(s):  
Akihiro C. Yamashita ◽  
Ryoichi Sakiyama ◽  
Hiroyuki Hamada ◽  
Kakuji J. Tojo
Keyword(s):  
Solute Transport ◽  
Blood Purification ◽  
Agar Gel ◽  
Purification System
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