Inverse Analysis of Transport of Chlorinated Hydrocarbons Subject to Sequential Transformation Reactions

• Published in: Journal of environmental quality Vol. 30; no. 4; p. 1354
• Main Authors: Casey, Francis XM, Simunek, Jiri
• Format: Journal Article
• Language: English
• Published: 01.07.2001
• ISSN: 0047-2425

The equilibriumnonequilibrium transport model, HYDRUS-1D, was modified by including an inverse solution to allow simultaneous fit of multiple breakthrough curves resulting from transformation reactions. The aim was to enable the model to solve equilibrium and nonequilibrium transport models inversely for multiple solutes subject to sequential transformation reactions. Results are presented from an application of the model to published zero-valent metal miscible-displacement experiments. The columns were packed with iron or iron-coated in copper and used to treat trichloroethylene. Results show that the parameters estimated by the model were consistent with parameters obtained independently from previous studies, leading to more reliable identification of underlying transport processes as indicated by the excellent correlation between the model predictions and experimental data.