2025 Volume 87 Issue 4 Pages 355-367
Anaerobic digestate was inoculated with microalgae to produce microalgae biomass. The digestate was diluted fivefold. “Native algal communities” were used as the cultivation species. After approximately 40 days of cultivation in a 100 L culture tank, 83.4 % of total nitrogen and 55.7 % of total phosphorus were removed from the digestate, and microalgal biomass (ca. 40 g/100 L) was produced. The resulting biomass exhibited contained approximately 40 % protein and 9 % lipids. This study demonstrated that digestate treatment and microalgal biomass production can be achieved at low cost because the digestate pretreatment required is filtration and dilution, the microalgae grow naturally, and the culture equipment is very simple.
