3.2. Turbidity removal in model water
Efficiency of prepared ultrafiltration fractions in turbidity
removal was investigated in model water at three pH values starting
from the turbidity 35 NTU. Coagulation tests were conducted
with different dosages of tested fractions and crude extract, and
obtained results are shown in Fig. 1. Values of pH were chosen in
accordance to our previous results which revealed the highest efficiency
of natural coagulant from common bean seed in removal
of turbidity from synthetic water was attained at pH 9–11 (ˇS ´ciban