Editing Flocculation (section)

=== Biology ===
{{See also|Yeast flocculation#Process}}
Flocculation is used in [[biotechnology]] applications in conjunction with [[microfiltration]] to improve the efficiency of biological feeds. The addition of synthetic flocculants to the [[bioreactor]] can increase the average particle size making microfiltration more efficient. When flocculants are not added, cakes form and accumulate causing low cell viability. Positively charged flocculants work better than negatively charged ones since the cells are generally negatively charged.<ref>{{Cite journal|title = Flocculation of biological cells: Experiment vs. theory|journal = AIChE Journal|date = 2003-07-01|issn = 1547-5905|pages = 1687–1701|volume = 49|issue = 7|doi = 10.1002/aic.690490709|first1 = Binbing|last1 = Han|first2 = S.|last2 = Akeprathumchai|first3 = S. R.|last3 = Wickramasinghe|first4 = X.|last4 = Qian| bibcode=2003AIChE..49.1687H }}</ref>