This means that combined use of the two cationic flocculants did
not show any benefits as compared with them used individually.
Since the two flocculants offer similar mechanisms, an effect was
obtained in this case, which was similar to what was observed with
their concentrations increased to 45 mg/l, when used separately
(Fig. 2c and d). Thus, the experimental results show the use of
two flocculants similar in mechanism is not effective for efficient
sedimentation of C. vulgaris.