Record Display for the EPA National Library Catalog

RECORD NUMBER: 14 OF 42

OLS Field Name OLS Field Data
Main Title Denitrification in nonhomogenous laboratory scale aquifers preliminary model for transport and fate of a single compound /
Author Lindstrom, F. T. ; Boersma, L.
Other Authors
Author Title of a Work
Boersma, L.
CORP Author Oregon State Univ., Corvallis. Dept. of Soil Science.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Publisher U.S. Environmental Protection Agency,
Year Published 1990
Report Number EPA 600/2-90/009; EPA-R-814502
Stock Number PB90-186305
OCLC Number 22855203
Subjects Darcy's law--Mathematical models ; Denitrification--Mathematical models
Additional Subjects Water pollution control ; Aquifers ; Mathematical models ; Ground water ; Organic compounds ; Laboratory equipment ; Experimental design ; Fluid flow ; Hydraulic gradients ; Denitrification ; Boundary layer flow ; Comparison ; Injection wells ; Kinetics ; Source reduction ; Environmental transport ; Path of pollutants ; Mass balance ; Two-dimensional calculations ; Physical chemical treatment
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EMBD  EPA/600/2-90/009 GWERD Library/Ada,OK 02/08/1992
NTIS  PB90-186305 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation vii, 89 p. : ill. ; 28 cm.
Abstract
A two-dimensional mathematical model for simulating the transport and fate of organic chemicals in a laboratory scale, single layer aquifer is presented. The aquifer can be nonhomogeneous and anisotropic with respect to its fluid flow properties. The physical model has open inlet and outlet ends and is bounded by impermeable walls on all sides. Fully penetrating injection and/or extraction wells can be placed anywhere in the flow field. The inlet and outlet boundaries have user prescribed hydraulic pressure fields. The steady state hydraulic pressure field is obtained first by using the two-dimensional Darcy flow law and the continuity equation. The chemical transport and fate equation is then solved in terms of user stipulated initial and boundary conditions. The model accounts for the major physical processes of storage, dispersion, and advection, and also can account for linear equilibrium sorption, three first-order loss processes, including microbial degradation, irreversible sorption and/or dissolution into the organic phase, metabolism in the sorbed state, and first order loss in the sorbed state.
Notes
"March 1990" "Robert S. Kerr Environmental Research Laboratory" "EPA/600/2-90/009"