A finite-difference algorithm used to simulate radial diffusion, adsorption, and reactions of chlorinated ethenes in porous media
Simulations of radial diffusion, adsorption, and reactions of volatile organic compounds (VOCs) - trichloroethene (TCE), cis-1,2-dichloroethene (cDCE), vinyl chloride (VC), trichlorofluoroethene (TCFE) - and bromide (Br) in a porous media are conducted using rock properties identified from a mudstone aquifer in the Newark Basin, near West Trenton, New Jersey. The simulations are conducted using a finite-difference algorithm that was prepared for this investigation to solve the equation for radial diffusion, linear equilibrium adsorption, and zero- and first-order biodegradation. The simulations are conducted for a section of a rock matrix and the georeferencing is based on the locations of the well from which concentration data were collected and analyzed as part of this investigation. The model simulates concentrations in the porous media and in a borehole, which provides the boundary condition for the porous media domain. Rock properties controlling the diffusion, adsorption, and reaction of VOCs in the rock matrix are assumed to be spatially uniform. This program simulates radial diffusion, adsorption, and reaction of TCE, cDCE, VC, and TCFE in a borehole diffusion test. Adsorption is modeled by a linear sorption isotherm.
Citation Information
| Publication Year | 2022 |
|---|---|
| Title | A finite-difference algorithm used to simulate radial diffusion, adsorption, and reactions of chlorinated ethenes in porous media |
| DOI | 10.5066/P99I50JE |
| Authors | Paul A Hsieh, Daniel J Goode |
| Product Type | Data Release |
| Record Source | USGS Digital Object Identifier Catalog |
| USGS Organization | Pennsylvania Water Science Center |
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Paul Hsieh (Former Employee)
Scientist Emeritus
Daniel J Goode
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Stationed at
Web Communications
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A borehole test for chlorinated solvent diffusion and degradation rates in sedimentary rock
We present a new field measurement and numerical interpretation method (combined termed ‘test’) to parameterize the diffusion of trichloroethene (TCE) and its biodegradation products (DPs) from the matrix of sedimentary rock. The method uses a dual-packer system to interrogate a low-permeability section of the rock matrix adjacent to a previously contaminated borehole and uses the borehole monitor
AuthorsRichelle M. Allen-King, Rebecca L. Kiekhaefer, Daniel J. Goode, Paul A. Hsieh, Michelle Lorah, Thomas E. Imbrigiotta - Connect
Paul Hsieh (Former Employee)
Scientist EmeritusDaniel J Goode
Research HydrologistStationed atWeb CommunicationsEmail