Characterisation and anaerobic digestion of fat, oil and grease (FOG) waste from wastewater treatment plants

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dc.contributor.authorAlibardi, Luca
dc.contributor.authorStrazzabosco, Alice
dc.contributor.authorCossu, Raffaello
dc.date.accessioned2025-02-24T13:44:44Z
dc.date.available2025-02-24T13:44:44Z
dc.date.freetoread2025-02-24
dc.date.issued2025-02
dc.date.pubOnline2025-01-24
dc.description.abstractThe materials removed in the oil separation units of wastewater treatment plants can be referred to as fat, oil and grease (FOG) waste. FOG waste accumulation in treatment plants can cause clogging of pipes, production of excessive scums and foams, and negatively affect air/liquid oxygen transfer. While conventional disposal routes of this material can be limited by its water and organic content, FOG can represent a source of bio-energy other than bio-diesel production. This research determined the chemical and physical characteristics of FOG waste collected at four different wastewater treatment plants and defined the potential for energy recovery via dark fermentation and anaerobic digestion as treatment options for final disposal. The FOG samples featured markedly distinct physical aspects in connection with the oil separation technologies: solid agglomerate with a high content of lipids from vortex-type separation and semi-solid agglomerate with a low content of oils and fats from horizontal-flow chambers. All FOG waste presented high potential for methane production with values ranging from 460 to 865 Nm3CH4/tVS but low yields of biological hydrogen via dark fermentation. This study addresses a knowledge gap in the scientific literature on the characteristics of FOG waste from treatment plants and defines possible routes for sustainable management via bio-energy recovery.
dc.description.journalNameJournal of Environmental Management
dc.format.mediumPrint-Electronic
dc.identifier.citationAlibardi L, Strazzabosco A, Cossu R. (2025) Characterisation and anaerobic digestion of fat, oil and grease (FOG) waste from wastewater treatment plants. Journal of Environmental Management, Volume 375, February 2025, Article number 124193en_UK
dc.identifier.eissn1095-8630
dc.identifier.elementsID563498
dc.identifier.issn0301-4797
dc.identifier.paperNo124193
dc.identifier.urihttps://doi.org/10.1016/j.jenvman.2025.124193
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23510
dc.identifier.volumeNo375
dc.languageEnglish
dc.language.isoen
dc.publisherElsevieren_UK
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S0301479725001690?via%3Dihub
dc.relation.isreferencedbyhttps://doi.org/10.57996/cran.ceres-2598
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectFaten_UK
dc.subjectOilen_UK
dc.subjectGreaseen_UK
dc.subjectFOGen_UK
dc.subjectAnaerobic digestionen_UK
dc.subjectDark fermentationen_UK
dc.subject4004 Chemical Engineeringen_UK
dc.subject40 Engineeringen_UK
dc.subject4011 Environmental Engineeringen_UK
dc.subject7 Affordable and Clean Energyen_UK
dc.subjectEnvironmental Sciencesen_UK
dc.subject.meshWastewateren_UK
dc.subject.meshAnaerobiosisen_UK
dc.subject.meshWaste Disposal, Fluiden_UK
dc.subject.meshFatsen_UK
dc.subject.meshFermentationen_UK
dc.subject.meshOilsen_UK
dc.subject.meshMethaneen_UK
dc.titleCharacterisation and anaerobic digestion of fat, oil and grease (FOG) waste from wastewater treatment plantsen_UK
dc.typeArticle
dc.type.subtypeJournal Article
dcterms.dateAccepted2025-01-17

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