umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Physical and chemical properties of RME biodiesel exhaust particles without engine modifications
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics. (Thermochemical Energy Conversion Laboratory)ORCID iD: 0000-0003-2497-5294
Show others and affiliations
2016 (English)In: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 186, 261-269 p.Article in journal (Refereed) Published
Abstract [en]

A major contributor to ambient particulate air pollution is exhaust from diesel engines and other vehicles, which can be linked to different adverse health effects. During the last decades, a global drive towards finding sustainable and clean bio-based alternative fuels for the transport sector has taken place and biodiesel is one of the most established alternatives today. To better assess the overall effects on a public health level when introducing biodiesel and other renewable fuels, a better understanding of the detailed exhaust particle properties, is needed. In this work, the physical and chemical properties of biodiesel exhaust particles were studied in comparison to standard diesel exhaust emissions, in an existing engine without modifications, focusing on particulate carbonaceous matter and PAH/Oxy-PAH as well as fine particle size distribution. An older off-road engine, produced between 1996 and 2004, was used with three different fuels/fuel blends; (1) 100 wt% low-sulfur standard petro diesel (SD), (2) 100 wt% rapeseed methyl ester biodiesel (B100) and (3) a blended fuel – B30 consisting of 30 wt% RME and 70 wt% SD. The study focused mainly on emissions from transient engine operation, but includes also idling conditions. The gaseous emissions measured for the biodiesel fuel were in general in accordance with previous reported data in the literature, and compared to the standard petro diesel the emissions of CO was lower while NOx emissions increased. The particulate mass concentration during transient operation was almost halved compared to when petro diesel was used and this was associated with a decrease in average particle size. The shift in particle mass and size was associated with a higher fraction of organic matter in general, considerable less PAH’s but a relative higher fraction of Oxy-PAH’s, when shifting from petro diesel to biodiesel.

Place, publisher, year, edition, pages
2016. Vol. 186, 261-269 p.
Keyword [en]
Biodiesel, RME, Diesel engine, Exhaust emissions, Particles characteristics, PAH
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:umu:diva-127037DOI: 10.1016/j.fuel.2016.08.062ISI: 000385318600027OAI: oai:DiVA.org:umu-127037DiVA: diva2:1040171
Funder
Bio4EnergyAFA InsuranceSwedish Heart Lung Foundation
Available from: 2016-10-26 Created: 2016-10-26 Last updated: 2016-12-09Bibliographically approved
In thesis
1. Particle emissions from residential wood and biodiesel combustion
Open this publication in new window or tab >>Particle emissions from residential wood and biodiesel combustion
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Emissions from anthropogenic combustion sources, such as vehicles and biomass combustion, contribute significantly to ambient particulate matter (PM) both on a local and global scale. Exposure to ambient PM and air pollution in general is linked to a variety of different health effects and it has been estimated that as many as 2.1 million premature deaths each year, due to cardiopulmonary disease and lung cancer, are caused by the changes in anthropogenic air pollution since pre-industrial times. There is today still a lack of information regarding the emissions of different specific particulate emission components, e.g. soot, polycyclic aromatic hydrocarbons (PAHs), oxy-PAHs combined with details about the behaviour of different fuels under varying combustion conditions. The overall objective of this work was to provide new knowledge regarding physical and chemical properties of PM from solid and liquid biofuels, which are important for the viewpoint of human health and atmospheric pollution. This was achieved by experimental studies of the combustion of biomass using a residential wood stove and by introducing biodiesel to an off-road engine, thereby investigating two major emission sources for PM and gaseous emissions.

From the two papers regarding biodiesel included in this thesis, it can be concluded that the introduction of the biodiesel, and potentially other renewable fuels, can in a considerable way change the exhaust particle emissions. This could have implications for the assessment of exhaust from engines running on biodiesel fuels, especially when introducing biodiesel in existing and older engines.

The results from the wood combustion research performed showed some important considerations regarding both specific particle properties and the influences of different burning conditions and fuels. One major finding, based on several of the included studies, was that a proper operation of a wood stove is of major importance to avoid unfavourable burning condition and elevated emissions of soot and organic particles, regardless of the wood species used. Some specific occasions during the burning phases in batch wise wood combustion were also identified as important for the overall emissions. The results from this research has given new specific insights into the emissions from wood stoves and should be of relevance for both technological development of residential appliances, emission testing/certification, information to users and legislation.

Place, publisher, year, edition, pages
Umeå: Umeå Universitet, 2016. 75 p.
Keyword
Combustion, biomass, wood, biodiesel, particulate matter, emissions, aerosols, physicochemical properties, size distribution, PAH
National Category
Other Natural Sciences
Identifiers
urn:nbn:se:umu:diva-127460 (URN)978-91-7601-605-3 (ISBN)
Public defence
2016-12-14, N460, Naturvetarhuset, Johan Bures Väg 16, Umeå, 13:00 (Swedish)
Opponent
Supervisors
Available from: 2016-11-23 Created: 2016-11-14 Last updated: 2016-11-22Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Nyström, RobinBlomberg, AndersSandström, ThomasBoman, Christoffer
By organisation
Department of Applied Physics and ElectronicsPulmonary Medicine
In the same journal
Fuel
Energy Engineering

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 421 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf