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dc.contributor.authorStevčić, Čedomir
dc.contributor.authorPulkkinen, Katja
dc.contributor.authorPirhonen, Juhani
dc.date.accessioned2020-01-30T10:58:50Z
dc.date.available2020-01-30T10:58:50Z
dc.date.issued2019
dc.identifier.citationStevčić, Č., Pulkkinen, K., & Pirhonen, J. (2019). Screening of microalgae and LED grow light spectra for effective removal of dissolved nutrients from cold-water recirculating aquaculture system (RAS) wastewater. <i>Algal Research</i>, <i>44</i>, Article 101681. <a href="https://doi.org/10.1016/j.algal.2019.101681" target="_blank">https://doi.org/10.1016/j.algal.2019.101681</a>
dc.identifier.otherCONVID_33462590
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/67614
dc.description.abstractPopularity of recirculating aquaculture systems (RAS) is increasing. Because of the high water recirculation rate, dissolved nutrients originating from fish feed are concentrated enough in RAS wastewater (WW) to enable growth of primary producers, e.g. microalgae. This study evaluated nitrate-nitrogen (NO3-N) and phosphate-phosphorus (PO4-P) removal efficiency of ten temperate zone freshwater microalgae species during their exponential growth phase in unfiltered RAS WW at 17 ± 0.5 °C. Growth and nutrient uptake efficiency of six green and four non-green microalgae strains were compared between WW and reference growth medium in batch monocultures. The effect of three different LED grow light spectra on growth and nutrient uptake efficiency were compared for four green microalgae in WW. The specific growth rate (SGR, 0.5-0.8 d−1) and removal of NO3-N (N%, 57–96%) and PO4-P (P%, 78–94%) of green microalgae in WW in 4 days were comparable to the results obtained in the reference medium (SGR, 0.6-0.9 d−1, N%, 59–99%; P%, 86–99%). In contrast, non-green microalgae had negligible growth (SGR, from -0.1 to 0.2 d−1) and poor nutrient removal (N%, 1–29%; P%, 0–34%) in both growth media after 9 days. The three LED spectra did not differ on their effect on growth and nutrient removal of three green microalgae in WW after 4 days, while the fourth tested species, Haematoccocus pluvialis, had its highest nutrient removal after 8 days under a specific LED spectrum. Current results show that RAS WW supports well green microalgae growth in batch cultures in temperatures common in Nordic RAS and that continuous spectrum LED grow lights can induce high removal of dissolved nutrients. Our findings lend support to the concept of using temperate zone microalgae for nutrient removal and recycling from RAS WW.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherElsevier BV
dc.relation.ispartofseriesAlgal Research
dc.rightsCC BY-NC-ND 4.0
dc.subject.otherbioremediation
dc.subject.othercontinuous light spectra
dc.subject.otherCoregonus lavaretus
dc.subject.otherfish farming
dc.subject.othernitrate-nitrogen
dc.subject.othernutrient uptake
dc.subject.otherphosphate-phosphorus
dc.subject.otherwastewater treatment
dc.titleScreening of microalgae and LED grow light spectra for effective removal of dissolved nutrients from cold-water recirculating aquaculture system (RAS) wastewater
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202001301883
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosDepartment of Biological and Environmental Scienceen
dc.contributor.oppiaineAkvaattiset tieteetfi
dc.contributor.oppiaineAquatic Sciencesen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn2211-9264
dc.relation.volume44
dc.type.versionacceptedVersion
dc.rights.copyright© 2019 Elsevier B.V.
dc.rights.accesslevelopenAccessfi
dc.subject.ysovesiviljely (kalatalous)
dc.subject.ysosiika
dc.subject.ysovaloviljely
dc.subject.ysobiologinen puhdistus
dc.subject.ysofosfaatit
dc.subject.ysonitraatit
dc.subject.ysokalanviljely
dc.subject.ysomikrolevät
dc.subject.ysoravinteet
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p5099
jyx.subject.urihttp://www.yso.fi/onto/yso/p18578
jyx.subject.urihttp://www.yso.fi/onto/yso/p24109
jyx.subject.urihttp://www.yso.fi/onto/yso/p18477
jyx.subject.urihttp://www.yso.fi/onto/yso/p8696
jyx.subject.urihttp://www.yso.fi/onto/yso/p2567
jyx.subject.urihttp://www.yso.fi/onto/yso/p5096
jyx.subject.urihttp://www.yso.fi/onto/yso/p26977
jyx.subject.urihttp://www.yso.fi/onto/yso/p3938
dc.rights.urlhttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.relation.doi10.1016/j.algal.2019.101681
jyx.fundinginformationThis work was supported by the University of Jyväskylä and the European Maritime and Fisheries Fund (EMFF).
dc.type.okmA1


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