Energy, exergy and exergoeconomic analysis of a CI engine fuelled with waste frying oil biodiesel blended with waste tyre pyrolysis oil and higher alcohols (Heptanol and Octanol): A waste-to-energy approach

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dc.authorid0000-0002-2328-5809
dc.authorid0000-0003-1572-2607
dc.authorid0000-0002-3438-9312
dc.authorid0000-0002-5212-0966
dc.contributor.authorGülcan, Halil Erdi
dc.contributor.authorDemirci, Oğuz Kürşat
dc.contributor.authorErol, Derviş
dc.contributor.authorTunçer, Erdal
dc.date.accessioned2025-12-22T11:54:23Z
dc.date.available2025-12-22T11:54:23Z
dc.date.issued2025
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Makine Mühendisliği Bölümü
dc.description.abstractThis study evaluates a waste-to-energy diesel concept that co-valorises waste cooking oil and end-of-life tyres by formulating biodiesel–tyre pyrolysis oil blends with small additions of higher alcohols (1-heptanol and n-octa nol). Five fuels (B100, B90T10, B85T10H5, B85T10O5 and B80T10H5O5) were tested in a single-cylinder diesel engine. Engine performance, emissions and combined energy–exergy–exergoeconomic indicators were used to assess thermodynamic and economic viability. The quaternary blend B80T10H5O5 achieved the highest mean energy and exergy efficiencies (26.5 % and 24.6 %) and reduced brake-specific fuel consumption by about 5 % relative to neat biodiesel, owing to improved volatility and fuel oxygenation. This benefit was accompanied by higher NOx emissions and the largest specific exergy cost (≈1430 USD GJ− 1 ) at full load. By contrast, the binary blend B90T10 preserved biodiesel-like efficiency while lowering the specific exergy cost of shaft power by roughly 10 %, emerging as the most cost-effective option. Overall, modest shares of tyre pyrolysis oil (10 %) and long-chain alcohols (≤5 %) in waste-oil biodiesel can provide an attractive compromise between energy effi ciency, emissions and exergy-based cost, supporting circular-economy-oriented diesel combustion.
dc.description.sponsorshipThe authors gratefully acknowledge the financial support of the Scientific Research Projects Coordination Unit of Kirıkkale University (Project Nos 2023/080 and 2023/093). Additional funding and re sources were provided by Erin Engine Corporation Inc. through its R&D programme, for which the authors are also sincerely grateful. Yazarlar, Kırıkkale Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi'nin (Proje No: 2023/080 ve 2023/093) sağladığı mali desteğe minnettar olduklarını belirtirler. Ek finansman ve kaynaklar, Erin Engine Corporation Inc. tarafından Ar-Ge programı aracılığıyla sağlanmış olup, yazarlar bu destek için de içtenlikle teşekkür ederler.
dc.identifier.citationGülcan, H. E., Demirci, O. K., Erol, D., & Tunçer, E. (2025). Energy, exergy and exergoeconomic analysis of a CI engine fuelled with waste frying oil biodiesel blended with waste tyre pyrolysis oil and higher alcohols (Heptanol and Octanol): A waste-to-energy approach. Biomass and Bioenergy, 207, pp. 1-19. https://doi.org/10.1016/j.biombioe.2025.108787
dc.identifier.doi10.1016/j.biombioe.2025.108787
dc.identifier.endpage19
dc.identifier.issn1873-2909
dc.identifier.issn0961-9534
dc.identifier.scopus2-s2.0-105024355840
dc.identifier.scopusqualityQ1
dc.identifier.startpage1
dc.identifier.urihttps://doi.org/10.1016/j.biombioe.2025.108787
dc.identifier.urihttps://hdl.handle.net/20.500.13055/1225
dc.identifier.volume207
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.indekslendigikaynak.otherSCI-E - Science Citation Index Expanded
dc.institutionauthorTunçer, Erdal
dc.institutionauthorid0000-0002-5212-0966
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofBiomass and Bioenergy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectEnergy and Exergy Analysis
dc.subjectExergoeconomic Analysis
dc.subjectHeptanol
dc.subjectOctanol
dc.subjectWaste Frying Oil
dc.subjectWaste Tyre Pyrolysis Oil
dc.titleEnergy, exergy and exergoeconomic analysis of a CI engine fuelled with waste frying oil biodiesel blended with waste tyre pyrolysis oil and higher alcohols (Heptanol and Octanol): A waste-to-energy approach
dc.typeArticle
dspace.entity.typePublication

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