Hl. Reddy et Rm. Ford, ANALYSIS OF BIODEGRADATION AND BACTERIAL TRANSPORT - COMPARISON OF MODELS WITH KINETIC AND EQUILIBRIUM BACTERIAL ADSORPTION, Journal of contaminant hydrology, 22(3-4), 1996, pp. 271-287
Citations number
26
Categorie Soggetti
Water Resources","Environmental Sciences","Geosciences, Interdisciplinary
An advection/dispersion/sorption model incorporating Monod kinetics (m
odified to describe bacterial growth near threshold concentrations of
the contaminant) was used to analyze breakthrough curve and concentrat
ion profile data from soil column experiments previously reported for
degradation of 1,2-dichlorobenzene by Pseudomonas P51. Two models for
bacterial sorption in the column were compared: one assumed an equilib
rium process and the other used first-order kinetics for adsorption an
d desorption. Numerical solutions of both models using reasonable para
meter values represented the column concentration profile data well. T
he two adsorption models yielded qualitatively and quantitatively simi
lar results for contaminant concentration data. However, significant d
ifferences in bacteria distributions and breakthrough curves were pred
icted from the two adsorption models. These are important consideratio
ns for distinguishing between various models of bacterial migration fo
r field-scale applications.