Light vehicle regulated and unregulated emissions from different biodiesels

Karavalakis, G; Stournas, S; Bakeas, E

dc.contributor.author	Karavalakis, G	en
dc.contributor.author	Stournas, S	en
dc.contributor.author	Bakeas, E	en
dc.date.accessioned	2014-03-01T01:30:59Z
dc.date.available	2014-03-01T01:30:59Z
dc.date.issued	2009	en
dc.identifier.issn	0048-9697	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19708
dc.subject	Biodiesel	en
dc.subject	Carbonyls	en
dc.subject	Driving cycles	en
dc.subject	Emissions	en
dc.subject	PAHs	en
dc.subject	Vehicles	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	[carbonyl	en
dc.subject.other	Biodiesel blends	en
dc.subject.other	Biodiesel properties	en
dc.subject.other	Carbonyls	en
dc.subject.other	Cetane numbers	en
dc.subject.other	Chassis dynamometers	en
dc.subject.other	Chemical structures	en
dc.subject.other	Constant volume samplings	en
dc.subject.other	Driving cycles	en
dc.subject.other	Emissions	en
dc.subject.other	Exhaust emissions	en
dc.subject.other	HC emissions	en
dc.subject.other	Iodine numbers	en
dc.subject.other	Light vehicles	en
dc.subject.other	Methyl esters	en
dc.subject.other	Negative impacts	en
dc.subject.other	New european driving cycles	en
dc.subject.other	PAH emissions	en
dc.subject.other	PAHs	en
dc.subject.other	Particulate phasis	en
dc.subject.other	Passenger vehicles	en
dc.subject.other	Pm emissions	en
dc.subject.other	Rapeseed methyl esters	en
dc.subject.other	Source materials	en
dc.subject.other	Unregulated emissions	en
dc.subject.other	Aldehydes	en
dc.subject.other	Biodiesel	en
dc.subject.other	Carbon monoxide	en
dc.subject.other	Carbonylation	en
dc.subject.other	Diesel fuels	en
dc.subject.other	Dynamometers	en
dc.subject.other	Esterification	en
dc.subject.other	Esters	en
dc.subject.other	Iodine	en
dc.subject.other	Multicarrier modulation	en
dc.subject.other	Permanent magnets	en
dc.subject.other	Steel metallurgy	en
dc.subject.other	Vehicles	en
dc.subject.other	Leakage (fluid)	en
dc.subject.other	biofuel	en
dc.subject.other	carbonyl compound	en
dc.subject.other	chemical composition	en
dc.subject.other	exhaust emission	en
dc.subject.other	PAH	en
dc.subject.other	testing method	en
dc.subject.other	traffic emission	en
dc.subject.other	Air Pollutants	en
dc.subject.other	Environmental Monitoring	en
dc.subject.other	Fatty Acids	en
dc.subject.other	Gasoline	en
dc.subject.other	Greece	en
dc.subject.other	Motor Vehicles	en
dc.subject.other	Vehicle Emissions	en
dc.subject.other	Brassica napus	en
dc.title	Light vehicle regulated and unregulated emissions from different biodiesels	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.scitotenv.2008.12.063	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.scitotenv.2008.12.063	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	In this study, the regulated and unregulated emissions profile and fuel consumption of an automotive diesel and biodiesel blends, prepared from two different biodiesels, were investigated. The biodiesels were a rapeseed methyl ester (RME) and a palm-based methyl ester (PME). The tests were performed on a chassis dynamometer with constant volume sampling (CVS) over the New European Driving Cycle (NEDC) and the non-legislated Athens Driving Cycle (ADC), using a Euro 2 compliant passenger vehicle. The objectives were to evaluate the impact of biodiesel chemical structure on the emissions, as well as the influence of the applied driving cycle on the formation of exhaust emissions and fuel consumption. The results showed that NOx emissions were influenced by certain biodiesel properties, such as those of cetane number and iodine number. NO, emissions followed a decreasing trend over both cycles, where the most beneficial reduction was obtained with the application of the more saturated biodiesel. PM emissions were decreased with the palm-based biodiesel blends over both cycles, with the exception of the 20% blend which was higher compared to diesel fuel. PME blends led to increases in PM emissions over the ADC. The majority of the biodiesel blends showed a tendency for lower CO and HC emissions. The differences in CO2 emissions were not statistically significant. Fuel consumption presented an increase with both biodiesels. Total PAH and nitro-PAH emission levels were decreased with the use of biodiesel independently of the source material. Lower molecular weight PAHs were predominant in both gaseous and particulate phases. Both biodiesels had a negative impact on certain carbonyl emissions. Formaldehyde and acetaldehyde were the dominant aldehydes emitted from both fuels. (C) 2009 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Science of the Total Environment	en
dc.identifier.doi	10.1016/j.scitotenv.2008.12.063	en
dc.identifier.isi	ISI:000265515900011	en
dc.identifier.volume	407	en
dc.identifier.issue	10	en
dc.identifier.spage	3338	en
dc.identifier.epage	3346	en