ORIGINAL RESEARCH
Inhibiting Effect of Surfactants and Heavy Metal
Ions on the Denitrification Process
K. Seifert, F. Domka*
Department of Kinetics and Catalysis, Faculty of Chemistry, Adam Mickiewicz University,
ul. Grunwaldzka 6, 60-780 Poznań, Poland
ul. Grunwaldzka 6, 60-780 Poznań, Poland
Pol. J. Environ. Stud. 2005;14(1):87–93
KEYWORDS
ABSTRACT
The effect of selected surfactants and heavy metal ions on the kinetics of the process of denitrification
taking place with the involvement of Bacillus licheniformis bacteria has been studied. The limiting
concentrations of the compounds studied and the coefficients of inhibition have been determined. A kinetic
model of denitrification was carried out in a lactate medium with the addition of a quaternary ammonium
salt APDA has been proposed. The process has been shown to occur according to the autocatalytic model
of the second order with respect to nitrates (V) and proteins and first order with respect to nitrates (III) for
the subseguent irreversible reaction.
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