3.3. Anaerobic digestion of flocculated microalgal biomass
The addition of chemicals to induce biomass flocculation may con-taminate microalgal biomass and make it unsuitable for further uses. According to the literature, some organic and natural flocculants did not affectthe microalgae biodegradability [2–13], while some inorganic (metal-based) flocculants modified biomass characteristics at high doses [29,30]. To date, there are no literature results on the effect of or-ganic flocculants on the anaerobic digestion of microalgae.