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dc.contributor.authorLetelier-Gordo, Carlos O.
dc.contributor.authorAalto, Sanni L.
dc.contributor.authorSuurnäkki, Suvi
dc.contributor.authorPedersen, Per Bovbjerg
dc.date.accessioned2020-02-25T10:38:09Z
dc.date.available2020-02-25T10:38:09Z
dc.date.issued2020
dc.identifier.citationLetelier-Gordo, C. O., Aalto, S. L., Suurnäkki, S., & Pedersen, P. B. (2020). Increased sulfate availability in saline water promotes hydrogen sulfide production in fish organic waste. <i>Aquacultural Engineering</i>, <i>89</i>, 102062. <a href="https://doi.org/10.1016/j.aquaeng.2020.102062" target="_blank">https://doi.org/10.1016/j.aquaeng.2020.102062</a>
dc.identifier.otherCONVID_34596197
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/67955
dc.description.abstractThe risk of hydrogen sulfide (H2S) production can be a challenge in marine land-based recirculating aquaculture systems (RAS). Hydrogen sulfide is a toxic gas that can cause massive fish mortality even at low concentrations, and in addition, serious odour problems in the surroundings. It is a bacterial by-product originating from the degradation of organic matter in sulfur-rich waters such as marine waters. In order to hinder H2S production in marine land-based RAS, more information on the H2S production conditions and the associated microbiology is needed. In this study, the production of H2S from rainbow trout (Oncorhynchus mykiss) organic waste was examined using a novel H2S measurement method under a range of salinities (0, 5, 10, 15, 25 and 35 g/L) in anaerobic mixed reactors, and the microbial communities as well as abundance of sulfate reducing bacteria (SRB) were characterized. The maximum H2S concentration increased from 23.1 ± 8.2 mg H2S/L at 0 g/L salinity to 153.9 ± 34.1 mg H2S/L at 35 g/L salinity. Similarly, the H2S production rate increased from 5.6 ± 0.2 at 0 g/L salinity to 26.4 ± 12.7 mg of H2S produced per day at 35 g/L salinity. The highest H2S production was recorded after increased availability of volatile fatty acids, which were produced by fermentative bacteria from phyla Firmicutes and Bacteroidetes that dominated the microbial communities after day 5. The traditional sulfate reducing bacteria (SRB) were found only at 0 and 5 g/L salinity, while at higher salinities, H2S production was carried out by novel unquantifiable SRB. The results demonstrate that H2S can be a pronounced problem in marine RAS, although it can be controlled through preventing anaerobic conditions within the system.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofseriesAquacultural Engineering
dc.rightsCC BY-NC-ND 4.0
dc.subject.otherhydrogen sulfide
dc.subject.otherorganic matter
dc.subject.otherseawater
dc.subject.othersulfate
dc.subject.othersulfate reducing bacteria
dc.titleIncreased sulfate availability in saline water promotes hydrogen sulfide production in fish organic waste
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202002252183
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosDepartment of Biological and Environmental Scienceen
dc.contributor.oppiaineYmpäristötiedefi
dc.contributor.oppiaineAkvaattiset tieteetfi
dc.contributor.oppiaineEnvironmental Scienceen
dc.contributor.oppiaineAquatic Sciencesen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.description.reviewstatuspeerReviewed
dc.format.pagerange102062
dc.relation.issn0144-8609
dc.relation.volume89
dc.type.versionacceptedVersion
dc.rights.copyright© 2020 Elsevier B.V. All rights reserved.
dc.rights.accesslevelopenAccessfi
dc.subject.ysosulfaatit
dc.subject.ysorikkivety
dc.subject.ysomerivesi
dc.subject.ysoorgaaninen aines
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p13742
jyx.subject.urihttp://www.yso.fi/onto/yso/p9071
jyx.subject.urihttp://www.yso.fi/onto/yso/p3794
jyx.subject.urihttp://www.yso.fi/onto/yso/p14873
dc.rights.urlhttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.relation.doi10.1016/j.aquaeng.2020.102062
jyx.fundinginformationThe study was funded by BONUS (Art 185), funded jointly by the EU and national funding institutions of Finland (Academy of Finland), Sweden (Vinnova) and Denmark (Innovation Fund Denmark IFD).


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