Mass Cultivation of Microalgae: I. Experiences with Vertical Column Airlift Photobioreactors, Diatoms and CO2 Sequestration
korrigere sammendrag From 2015 to 2021, we optimized mass cultivation of diatoms in our own developed vertical column airlift photobioreactors using natural and artificial light (LEDs). The project took place at the ferrosilicon producer Finnfjord AS in North Norway as a joint venture with UiT—The A...
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Online Access: | https://hdl.handle.net/10037/24640 https://doi.org/10.3390/app12063082 |
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ftunivtroemsoe:oai:munin.uit.no:10037/24640 2023-05-15T17:39:23+02:00 Mass Cultivation of Microalgae: I. Experiences with Vertical Column Airlift Photobioreactors, Diatoms and CO2 Sequestration Eilertsen, Hans Christian Eriksen, Gunilla Bergum, John-Steinar Strømholt, Jo Elvevoll, Edel O. Eilertsen, Karl-Erik Heimstad, Eldbjørg Sofie Giæver, Ingeborg Hulda Israelsen, Linn Svenning, Jon Brage Dalheim, Lars Osvik, Renate Døving Hansen, Espen Holst Ingebrigtsen, Richard Andre Aspen, Terje M Wintervoll, Geir-Henning 2022-03-17 https://hdl.handle.net/10037/24640 https://doi.org/10.3390/app12063082 eng eng MDPI Applied Sciences Eilertsen, Eriksen, Bergum, Strømholt, Elvevoll, Eilertsen, Heimstad, Giæver, Israelsen, Svenning, Dalheim, Osvik, Hansen, Ingebrigtsen, Aspen, Wintervoll. Mass Cultivation of Microalgae: I. Experiences with Vertical Column Airlift Photobioreactors, Diatoms and CO2 Sequestration. Applied Sciences. 2022 FRIDAID 2012460 doi:10.3390/app12063082 2076-3417 https://hdl.handle.net/10037/24640 openAccess Copyright 2022 The Author(s) Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2022 ftunivtroemsoe https://doi.org/10.3390/app12063082 2022-03-30T22:58:18Z korrigere sammendrag From 2015 to 2021, we optimized mass cultivation of diatoms in our own developed vertical column airlift photobioreactors using natural and artificial light (LEDs). The project took place at the ferrosilicon producer Finnfjord AS in North Norway as a joint venture with UiT—The Arctic University of Norway. Small (0.1–6–14 m 3 ) reactors were used for initial experiments and to produce inoculum cultures while upscaling experiments took place in a 300 m 3 reactor. We here argue that species cultivated in reactors should be large since biovolume specific self-shadowing of light can be lower for large vs. small cells. The highest production, 1.28 cm 3 L -1 biovolume (0.09–0.31 g DW day -1 ), was obtained with continuous culture at ca. 19% light utilization efficiency and 34% CO 2 uptake. We cultivated 4–6 months without microbial contamination or biofouling, and this we argue was due to a natural antifouling (anti-biofilm) agent in the algae. In terms of protein quality all essential amino acids were present, and the composition and digestibility of the fatty acids were as required for feed ingredients. Lipid content was ca. 20% of ash-free DW with high EPA levels, and omega-3 and amino acid content increased when factory fume was added. The content of heavy metals in algae cultivated with fume was well within the accepted safety limits. Organic pollutants (e.g., dioxins and PCBs) were below the limits required by the European Union food safety regulations, and bioprospecting revealed several promising findings. Article in Journal/Newspaper North Norway Arctic University of Norway UiT The Arctic University of Norway University of Tromsø: Munin Open Research Archive Arctic Norway Finnfjord ENVELOPE(18.089,18.089,69.218,69.218) Applied Sciences 12 6 3082 |
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Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
korrigere sammendrag From 2015 to 2021, we optimized mass cultivation of diatoms in our own developed vertical column airlift photobioreactors using natural and artificial light (LEDs). The project took place at the ferrosilicon producer Finnfjord AS in North Norway as a joint venture with UiT—The Arctic University of Norway. Small (0.1–6–14 m 3 ) reactors were used for initial experiments and to produce inoculum cultures while upscaling experiments took place in a 300 m 3 reactor. We here argue that species cultivated in reactors should be large since biovolume specific self-shadowing of light can be lower for large vs. small cells. The highest production, 1.28 cm 3 L -1 biovolume (0.09–0.31 g DW day -1 ), was obtained with continuous culture at ca. 19% light utilization efficiency and 34% CO 2 uptake. We cultivated 4–6 months without microbial contamination or biofouling, and this we argue was due to a natural antifouling (anti-biofilm) agent in the algae. In terms of protein quality all essential amino acids were present, and the composition and digestibility of the fatty acids were as required for feed ingredients. Lipid content was ca. 20% of ash-free DW with high EPA levels, and omega-3 and amino acid content increased when factory fume was added. The content of heavy metals in algae cultivated with fume was well within the accepted safety limits. Organic pollutants (e.g., dioxins and PCBs) were below the limits required by the European Union food safety regulations, and bioprospecting revealed several promising findings. |
format |
Article in Journal/Newspaper |
author |
Eilertsen, Hans Christian Eriksen, Gunilla Bergum, John-Steinar Strømholt, Jo Elvevoll, Edel O. Eilertsen, Karl-Erik Heimstad, Eldbjørg Sofie Giæver, Ingeborg Hulda Israelsen, Linn Svenning, Jon Brage Dalheim, Lars Osvik, Renate Døving Hansen, Espen Holst Ingebrigtsen, Richard Andre Aspen, Terje M Wintervoll, Geir-Henning |
spellingShingle |
Eilertsen, Hans Christian Eriksen, Gunilla Bergum, John-Steinar Strømholt, Jo Elvevoll, Edel O. Eilertsen, Karl-Erik Heimstad, Eldbjørg Sofie Giæver, Ingeborg Hulda Israelsen, Linn Svenning, Jon Brage Dalheim, Lars Osvik, Renate Døving Hansen, Espen Holst Ingebrigtsen, Richard Andre Aspen, Terje M Wintervoll, Geir-Henning Mass Cultivation of Microalgae: I. Experiences with Vertical Column Airlift Photobioreactors, Diatoms and CO2 Sequestration |
author_facet |
Eilertsen, Hans Christian Eriksen, Gunilla Bergum, John-Steinar Strømholt, Jo Elvevoll, Edel O. Eilertsen, Karl-Erik Heimstad, Eldbjørg Sofie Giæver, Ingeborg Hulda Israelsen, Linn Svenning, Jon Brage Dalheim, Lars Osvik, Renate Døving Hansen, Espen Holst Ingebrigtsen, Richard Andre Aspen, Terje M Wintervoll, Geir-Henning |
author_sort |
Eilertsen, Hans Christian |
title |
Mass Cultivation of Microalgae: I. Experiences with Vertical Column Airlift Photobioreactors, Diatoms and CO2 Sequestration |
title_short |
Mass Cultivation of Microalgae: I. Experiences with Vertical Column Airlift Photobioreactors, Diatoms and CO2 Sequestration |
title_full |
Mass Cultivation of Microalgae: I. Experiences with Vertical Column Airlift Photobioreactors, Diatoms and CO2 Sequestration |
title_fullStr |
Mass Cultivation of Microalgae: I. Experiences with Vertical Column Airlift Photobioreactors, Diatoms and CO2 Sequestration |
title_full_unstemmed |
Mass Cultivation of Microalgae: I. Experiences with Vertical Column Airlift Photobioreactors, Diatoms and CO2 Sequestration |
title_sort |
mass cultivation of microalgae: i. experiences with vertical column airlift photobioreactors, diatoms and co2 sequestration |
publisher |
MDPI |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/24640 https://doi.org/10.3390/app12063082 |
long_lat |
ENVELOPE(18.089,18.089,69.218,69.218) |
geographic |
Arctic Norway Finnfjord |
geographic_facet |
Arctic Norway Finnfjord |
genre |
North Norway Arctic University of Norway UiT The Arctic University of Norway |
genre_facet |
North Norway Arctic University of Norway UiT The Arctic University of Norway |
op_relation |
Applied Sciences Eilertsen, Eriksen, Bergum, Strømholt, Elvevoll, Eilertsen, Heimstad, Giæver, Israelsen, Svenning, Dalheim, Osvik, Hansen, Ingebrigtsen, Aspen, Wintervoll. Mass Cultivation of Microalgae: I. Experiences with Vertical Column Airlift Photobioreactors, Diatoms and CO2 Sequestration. Applied Sciences. 2022 FRIDAID 2012460 doi:10.3390/app12063082 2076-3417 https://hdl.handle.net/10037/24640 |
op_rights |
openAccess Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.3390/app12063082 |
container_title |
Applied Sciences |
container_volume |
12 |
container_issue |
6 |
container_start_page |
3082 |
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1766140146584911872 |