Characterization of seafood processing wastewater: Processing procedures and physicochemical variability

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dc.contributor.authorKatsara, Alexandraen
dc.contributor.authorCoughlan, Neil E.en
dc.contributor.authorJansen, Marcel A. K.en
dc.contributor.funderResearch Irelanden
dc.contributor.funderIrish Research Councilen
dc.contributor.funderEnvironmental Protection Agencyen
dc.contributor.funderHorizon Europeen
dc.date.accessioned2025-07-17T14:43:59Z
dc.date.available2025-07-17T14:43:59Z
dc.date.issued2025-07-12en
dc.description.abstractThe seafood processing industry produces large volumes of wastewater rich in organic matter, nutrients, and salts, often exceeding legal discharge limits and posing environmental risks. This review introduces a five-stage classification of seafood processing wastewater (SPW), based on key processing operations: initial washings (stage 1), filleting (stage 2), cooking and canning (stage 3), final washings (stage 4), and combined discharge (stage 5). Unlike previous reviews, this structured approach allows for a clearer link between processing steps and pollutant profiles. By adopting this structure, our review addresses a specific gap: the need for a standardized yet detailed framework to understand pollutant load variation across different seafood processing steps. Results show that stage 3 wastewater contain the highest concentrations of BOD, COD, TN, TAN, TP, and oils, followed by stage 2. In contrast, stage 1 and 4 wastewaters carry lower pollutant loads. This categorization enables identification of critical control points and supports the design of stage-specific treatment strategies. The findings highlight the necessity of distinct treatment approaches to improve resource efficiency and reduce environmental impact in seafood processing. This not only improves effectiveness of treatment, but also enables targeted circular economy interventions such as stage-specific recovery and valorisation strategies.en
dc.description.sponsorshipHorizon Europe (101084437);Science Foundation Ireland (22/PATH-S/10777)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid126761en
dc.identifier.citationKatsara, A., Coughlan, N. E. and Jansen, M. A. (2025) 'Characterization of seafood processing wastewater; processing procedures and physicochemical variability', Environmental Pollution, 383, 126761(9pp). https://doi.org/10.1016/j.envpol.2025.126761en
dc.identifier.doi10.1016/j.envpol.2025.126761en
dc.identifier.issn2697491en
dc.identifier.journaltitleEnvironmental Pollutionen
dc.identifier.urihttps://hdl.handle.net/10468/17729
dc.identifier.volume383
dc.language.isoenen
dc.publisherElsevier Ltden
dc.relation.project101084437en
dc.relation.project22/PATH-S/10777en
dc.rights© 2025, the Author(s). Open Access. . Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCircular economyen
dc.subjectResource recoveryen
dc.subjectSeafood processing wastewateren
dc.subjectWastewater treatmenten
dc.titleCharacterization of seafood processing wastewater: Processing procedures and physicochemical variabilityen
dc.typeArticle (peer reviewed)en
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