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Experimental study and numerical
simulation of denitrification in saturated porous
media
allayla, R.I.
,
Mohammed,
N.,
Husain,
T.
Department of Civil Engineering,
King Fahd University of Petroleum and Minerals,
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Abstract
The
effect of Denitrification on the behavior of nitrate in saturated sandy soil
was studied in the laboratory and the results were compared with the temporal
and spatial concentration of nitrate in nonreactive (without Denitrification)
and reactive (with Denitrification) cases. A laboratory model was fabricated to
study steady one-dimensional flow and to transport nitrate with or without Denitrification.
Denitrification at various rates has been simulated with varied C:N ratios and detention time. Retardation constant,
dispersivity, and degradation constants have been computed using existing
analytical models supporting adsorption and zero and/or first order production
or decay. It was found that such analytical models can be used to fit the
concentration of nitrate in saturated porous media for a C:N
ratio between 2 and 5.
The
effect of Denitrification on the behavior of nitrate in saturated sandy soil
was studied in the laboratory and the results were compared with the temporal
and spatial concentration of nitrate is nonreactive (without Denitrification)
and reactive (with Denitrification) cases. A laboratory model was fabricated to
study steady one-dimensional flow and to transport nitrate with or without Denitrification.
Denitrification at various rates has been simulated with varied C:N ratios and
detention time. Retardation constant, dispersivity, and degradation constants
have been computed using existing analytical models supporting adsorption and
zero and/or first order production or decay. It was found that such analytical
models can be used to fit the concentration of nitrate in saturated porous
media for a C:N ratio between 2 and 5.