Figure 1: Contour curves for the hydrolysis of the effluent as a function of the variables biosurfactant concentration and LEP concentration to 34°C (a); LEP concentration and temperature for biosurfactant concentration of 0.4% v/v (b); concentration of LEP and temperature for the biosurfactant concentration of 0.1% v/v (c); and biosurfactant concentration and the concentration of LEP at 46°C (d).