Biodegradation kinetics of surfactants in seawater. |
| |
| Authors: | J M Quiroga J A Perales L I Romero D Sales |
| |
| Affiliation: | Dept. of Chemical Engineering, Food Technology and Environmental Technology, Faculty of Sea Science, University of Cádiz, Puerto Real, Spain. |
| |
| Abstract: | In this paper, a general kinetic model for degradation processes of surfactants is proposed. The model equation is v = K2S2 + K1S + K0, where v is the substrate consumption rate in the biodegradation process, S is the surfactant concentration in the medium and K2, K1, and K0 are kinetic constants. From this general expression, different simplified equations can be obtained (where K0 = 0; K2 and K0 = 0; K2 = 0; K2 and K1 = 0), which are representative of the process for different operating conditions. This model was tested by measuring the degradation of two different surfactants (Sodium dodecyl benzene sulfonate, LAS; and Sodium dodecyl sulfate, DSNa) under two different temperatures (5 and 20 degrees C). Values predicted by the model are close to experimental data obtained. |
| |
| Keywords: | |
|
|
