In summary, this study determined that the separation
characteristics of Anabaena spp. occurred as a result of
chemical coagulation–biological auto-flocculation and
depended upon zeta potential. If the algal biomass is used
for food or feed, chemical coagulation may not be good
and auto-flocculation may be ideal for pure microalgae harvesting.
However, the physico-chemical properties of
bubbles or algal particles must further be improved during
auto-flocculation.