Integrated utilization of microalgae cultured in aquaculture wastewater : wastewater treatment and production of valuable fatty acids and tocopherols

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Tossavainen , M , Lahti , K , Edelmann , M , Eskola , R , Lampi , A-M , Piironen , V , Korvonen , P , Ojala , A & Romantschuk , M 2019 , ' Integrated utilization of microalgae cultured in aquaculture wastewater : wastewater treatment and production of valuable fatty acids and tocopherols ' , Journal of Applied Phycology , vol. 31 , no. 3 , pp. 1753-1763 . https://doi.org/10.1007/s10811-018-1689-6

Title: Integrated utilization of microalgae cultured in aquaculture wastewater : wastewater treatment and production of valuable fatty acids and tocopherols
Author: Tossavainen, Marika; Lahti, Katariina; Edelmann, Minnamari; Eskola, Reetta; Lampi, Anna-Maija; Piironen, Vieno; Korvonen, Pasi; Ojala, Anne; Romantschuk, Martin
Contributor organization: Helsinki Institute of Sustainability Science (HELSUS)
Ecosystems and Environment Research Programme
Food quality and safety: lipids, vitamins and other bioactive compounds
Department of Food and Nutrition
Food Sciences
Viikki Plant Science Centre (ViPS)
Anne Ojala / Principal Investigator
Ecosystem processes (INAR Forest Sciences)
Institute for Atmospheric and Earth System Research (INAR)
Martin Romantschuk / Principal Investigator
Helsinki One Health (HOH)
Aerovirology Research Group
Date: 2019-06
Language: eng
Number of pages: 11
Belongs to series: Journal of Applied Phycology
ISSN: 0921-8971
DOI: https://doi.org/10.1007/s10811-018-1689-6
URI: http://hdl.handle.net/10138/302837
Abstract: Microalgal cultivation in aquaculture wastewater (AWW) from recirculating aquaculture systems (RAS) is an approach for combined production of valuable algal biomass and AWW treatment. The growth, nutrient uptake, fatty acid (FA) profile, and tocopherol content of mixed algal cultures of Euglena gracilis with Selenastrum grown in AWWs from pikeperch (Sander lucioperca) and catfish (Clarias anguillaris) RAS were studied. The highest algal biomass (1.5gL(-1)), lipid (84.9mgL(-1)), and tocopherol (877.2gL(-1)) yields were achieved in sludge-amended pike perch AWW. Nutrient removal rates in experiments were 98.9-99.5 and 98.4-99.8% for NH4-N and PO4-P, and 75.4-89.2% and 84.3-95.7% for TN and TP, respectively, whereas the COD was reduced by 45.8-67.6%. Biomass EPA and DHA content met, while ARA and tocopherol content exceeded the requirements for fish feed. Algal cultivation in AWWs is a promising alternative for AWW treatment while providing a replacement for fish oil in feed.
Subject: Euglena gracilis
Selenastrum
PUFA
RAS
Wastewater
Feed
NANNOCHLOROPSIS-OCULATA EUSTIGMATOPHYCEAE
SALMON SALMO-SALAR
VITAMIN-E
MARINE MICROALGAE
EUGLENA-GRACILIS
ALGAL BIOMASS
CHLORELLA SP
FRESH-WATER
GROWTH
BIOFUEL
1172 Environmental sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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