A.A. Selyaninov, E.V. Vikhareva

The kinetic model has been presented for the biological degradation process of the p-aminophenol being either the original substrate or the primary degradation product of paracetamol that is unfit for medicinal use. If p-aminophenol is the original substrate, the process of its biodegradation may be described by the first order kinetic equation with the variable reaction factor but if it is a degradation product of paracetamol, the process may be described by the system of kinetic equations. The kinetic model allows both to reduce the extent of experimental work due to the replacement of the part of experiments by the theoretical prediction, and to determine the completion time for the process of paracetamol bio-destruction on the basis of p-aminophenol residual content.