Modeling transport of agricultural chemicals in a dual porosity system resulting from macropores

A conceptual model, based upon the bicontinuum double porosity approach, has been developed to simulate water flow and reactive chemical transport in both the soil matrix and the macropore region. Flow of water in both regions is governed by Richards' equation and chemical transport is based upon convective-dispersive mechanisms with linear kinetic sorption and first-order decay. The pressure-water content and the pressure-conductivity relationship for the unsaturated soil in each of the two regions are based upon the van Genuchten-Mualem relationships. The developed model was in one- and two-space dimensions and it contained several improvements over the previously proposed one-dimensional conceptual flow and transport models.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Civil Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Ray, Chittaranjan

Contributors dc:contributor

• Valocchi, Albert J.

• Agriculture, Agronomy
• Engineering, Agricultural
• Engineering, Civil
• Environmental Sciences

Statement dc:rights

• Copyright 1994 Ray, Chittaranjan

Language dc:language

eng

Identifier

AAI9512521
(UMI)AAI9512521

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20478