A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Supplementing air with CO2 stripped from recirculating aquaculture improves growth of two green microalgae in aquaculture wastewater (2023)

Pirhonen, J., Koukka, S., & Pulkkinen, K. (2023). Supplementing air with CO2 stripped from recirculating aquaculture improves growth of two green microalgae in aquaculture wastewater. Aquaculture, 567, Article 739242. https://doi.org/10.1016/j.aquaculture.2023.739242

JYU-tekijät tai -toimittajat

Pirhonen, Juhani
Pulkkinen, Katja

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Pirhonen, Juhani; Koukka, Silja; Pulkkinen, Katja

Lehti tai sarja: Aquaculture

ISSN: 0044-8486

eISSN: 1873-5622

Julkaisuvuosi: 2023

Volyymi: 567

Artikkelinumero: 739242

Kustantaja: Elsevier

Julkaisumaa: Alankomaat

Julkaisun kieli: englanti

DOI: https://doi.org/10.1016/j.aquaculture.2023.739242

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/85064

Tiivistelmä

To improve sustainability and to implement the principles of circular economy in aquaculture, we tested the possibility to boost the capture of nitrate by two green microalgal species from recirculating aquaculture system's (RAS) wastewater by supplementing air with carbon dioxide stripped from a RAS. Carbon dioxide addition increased cell densities of Monoraphidium griffithii and Haematococcus pluvialis in photobioreactors during 9-day growing periods. However, growth rates and nitrate uptake rates were only improved for M. griffithii. Addition of CO2 decreased pH of the medium with M. griffithii which likely also affected positively on algal growth and nutrient uptake. These laboratory scale experiments suggest that microalgal cultivation to produce valuable biomass could be connected to a RAS to decrease nitrate and CO2 emissions from aquaculture.

YSO-asiasanat: hiilidioksidi; kiertotalous; nitraatit; jätevesi

Vapaat asiasanat: circular economy; dissolved nutrients; carbon dioxide; nutrient trapping; photobioreactor

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