Another interesting result concerns the sludge sedimentation,
characterized by SVI measurements (Fig. 1D). While the Control
bioreactor presented several periods of poor sedimentation (24,
40–50 mg/L rhamnolipid) with SVI values above 300 mL/g, in the
Test bioreactor, the addition of rhamnolipid seems to have
contributed to lower the SVI values and improve the sludge
sedimentation. In the Test bioreactor, the SVI values remained
below 120 mL/g, threshold considered adequate for good sludge
sedimentation