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dc.contributor.authorMa, Mutianen_US
dc.contributor.authorRivellini, Laura-Hélènaen_US
dc.contributor.authorKasthuriarachchi, Nethmien_US
dc.contributor.authorZhu, Qirenen_US
dc.contributor.authorZong, Yichenen_US
dc.contributor.authorYu, Wenbinen_US
dc.contributor.authorYang, Wenmingen_US
dc.contributor.authorKraft, Markusen_US
dc.contributor.authorLee, Alex K. Y.en_US
dc.identifier.citationMa, M., Rivellini, L., Kasthuriarachchi, N., Zhu, Q., Zong, Y., Yu, W., Yang, W., Kraft, M. & Lee, A. K. Y. (2023). Effects of polyoxymethylene dimethyl ether (PODEn) blended fuel on diesel engine emission: insight from soot-particle aerosol mass spectrometry and aethalometer measurements. Atmospheric Environment: X, 18, 100216-.
dc.description.abstractPolyoxymethylene Dimethyl Ether (PODEn) is a promising diesel additive that can reduce particulate matter (PM) emission effectively, yet the changes in chemical and physical characteristics of PM emissions due to the application of PODEn-diesel blended fuel remain largely unexplored. This laboratory study investigates the effects of PODE3–diesel blended fuels (10, 20, and 30 vol% of PODE3 mixed with diesel, denoted as P10, P20, and P30, respectively) on diesel engine emissions at 30% and 60% engine loads. Black carbon (BC) and organic aerosol (OA) were characterized in real time by a combination of a soot-particle aerosol mass spectrometer (SP-AMS) and a seven-wavelength aethalometer. Our results show that PODE3 can significantly reduce both OA and BC emissions at both engine loads, with P20 producing the largest total PM mass reductions (>84%). The changes in the contribution of refractory oxygenated fragments to BC mass (i.e., C3O2+/C3+ and C3O+/C3+) indicate that PODE3 can reduce the functionality of soot surface/nanostructure. This is the first work showing that PODE3 can affect the mixing state of BC and OA in diesel engine exhaust. Increasing PODE3 blended volume can reduce the total fraction contribution of particle types that were composed of notably amounts of BC by mass. Furthermore, clustering analysis of single-particle data can identify two OA-dominated particle classes that were dominated by hydrocarbon fragments (CxHy+), and one of them had higher signal contribution from high molecular weight compounds. Lastly, the absorption Ångström exponent of BC (AAEBC) can be enhanced with PODE3 blended volume for both engine loads, and brown carbon (i.e., a light absorbing fraction of OA) can contribute up to ∼5% to the total aerosol absorption at the wavelength of 370 nm. Overall, this work provides insights into the potential impacts of PODEn blended fuel application on the chemical and optical properties of BC and OA emitted from diesel engine combustion.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.relation.ispartofAtmospheric Environment: Xen_US
dc.rights© 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (
dc.subjectEngineering::Chemical engineeringen_US
dc.titleEffects of polyoxymethylene dimethyl ether (PODEn) blended fuel on diesel engine emission: insight from soot-particle aerosol mass spectrometry and aethalometer measurementsen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Chemical and Biomedical Engineeringen_US
dc.description.versionPublished versionen_US
dc.subject.keywordsOxygenated Fuelen_US
dc.subject.keywordsEngine Sooten_US
dc.description.acknowledgementThis work was financially supported by the Ministry of Education of Singapore under research grant R-265-000-617-114, Campus for Research Excellence and Technological Enterprise (CREATE) programme and Cambridge CARES Emerging Opportunities Fund (EOF) project.en_US
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