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Article

Assessment of Nutrients Recovery Capacity and Biomass Growth of Four Microalgae Species in Anaerobic Digestion Effluent

1
Laboratory of Technologies for Environmental Protection and Utilization of Food By-Products, Department of Food Science and Technology, International Hellenic University (IHU), Sindos, 57400 Thessaloniki, Greece
2
Laboratory of Biochemical and Biotechnological Processes (LB2P), Department of Chemical Engineering, Aritotle University of Thessaloniki (AUTH), 54124 Thessaloniki, Greece
3
Cyanolab, Department of Botany, School of Biology, Aristotle University of Thessaloniki (AUTH), 54124 Thessaloniki, Greece
*
Author to whom correspondence should be addressed.
Academic Editor: Christina N. Economou
Water 2022, 14(2), 221; https://doi.org/10.3390/w14020221
Received: 29 November 2021 / Revised: 26 December 2021 / Accepted: 10 January 2022 / Published: 12 January 2022
Four microalgae species were evaluated for their bioremediation capacity of anaerobic digestion effluent (ADE) rich in ammonium nitrogen, derived from a biogas plant. Chlorella vulgaris, Chlorella sorokiniana, Desmodesmus communis and Stichococcus sp. were examined for their nutrient assimilation efficiency, biomass production and composition through their cultivation in 3.7% v/v ADE; their performance was compared with standard cultivation media which consisted in different nitrogen sources, i.e., BG-11NO3 and BG-11ΝH4 where N-NO3 was replaced by N-NH4. The results justified ammonium as the most preferable source of nitrogen for microalgae growth. Although Stichococcus sp. outperformed the other 3 species in N-NH4 removal efficiency both in BG-11NH4 and in 3.7% ADE (reaching up to 90.79% and 69.69% respectively), it exhibited a moderate biomass production when it was cultivated in diluted ADE corresponding to 0.59 g/L, compared to 0.89 g/L recorded by C. vulgaris and 0.7 g/L by C. sorokiniana and D. communis. Phosphorus contained in the effluent and in the control media was successfully consumed by all of the species, although its removal rate was found to be affected by the type of nitrogen source used and the particular microalgae species. The use of ADE as cultivation medium resulted in a significant increase in carbohydrates content in all investigated species. View Full-Text
Keywords: microalgae; high nitrogen wastewater; anaerobic digestion effluents; nutrient removal; microalgae biomass characterization microalgae; high nitrogen wastewater; anaerobic digestion effluents; nutrient removal; microalgae biomass characterization
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MDPI and ACS Style

Psachoulia, P.; Schortsianiti, S.-N.; Lortou, U.; Gkelis, S.; Chatzidoukas, C.; Samaras, P. Assessment of Nutrients Recovery Capacity and Biomass Growth of Four Microalgae Species in Anaerobic Digestion Effluent. Water 2022, 14, 221. https://doi.org/10.3390/w14020221

AMA Style

Psachoulia P, Schortsianiti S-N, Lortou U, Gkelis S, Chatzidoukas C, Samaras P. Assessment of Nutrients Recovery Capacity and Biomass Growth of Four Microalgae Species in Anaerobic Digestion Effluent. Water. 2022; 14(2):221. https://doi.org/10.3390/w14020221

Chicago/Turabian Style

Psachoulia, Paraskevi, Sofia-Natalia Schortsianiti, Urania Lortou, Spyros Gkelis, Christos Chatzidoukas, and Petros Samaras. 2022. "Assessment of Nutrients Recovery Capacity and Biomass Growth of Four Microalgae Species in Anaerobic Digestion Effluent" Water 14, no. 2: 221. https://doi.org/10.3390/w14020221

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