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Biodiesel NOx penalty and control measures - A review
Published in Elsevier Ltd
2016
Volume: 61
   
Pages: 1 - 24
Abstract
Biodiesel fuels comprised of mono-alkyl esters of long chain fatty acids derived from vegetable oils or animal fats serve as a potential alternative to fossil diesel. The biodiesel fueled engine does not require any major hardware modifications in the existing configuration. Also, the uses of biodiesel in compression ignition engines are found to significantly lower soot emissions. Thus, the conventional nitric oxide-soot trade-off problem narrows down to a unidirectional control of nitric oxide emissions which are generally known to increase with several candidate biodiesel fuels. The formation of oxides of nitrogen (NOx) from biodiesel fuel is dependent on both fuel and engine characteristics. The present work reviews the effect of biodiesel fuel composition and properties on NOx emissions emanating from biodiesel fueled engines and describes fuel modifications and engine tuning measures for their mitigation. The other outcomes of biodiesel NOx control measures in terms of engine performance and emission changes are also highlighted and the best possible ways for achieving biodiesel-NOx neutrality are outlined. © 2016 Elsevier Ltd. All rights reserved.
About the journal
JournalData powered by TypesetRenewable and Sustainable Energy Reviews
PublisherData powered by TypesetElsevier Ltd
ISSN13640321
Open AccessNo
Concepts (18)
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    Composition effects
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    Diesel engines
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    Economic and social effects
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    Engines
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    Esters
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    Fatty acids
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    Fuels
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    Nitric oxide
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    Soot
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    Compression ignition engine
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    Engine performance
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    HARDWARE MODIFICATIONS
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    Long chain fatty acid
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    Methyl esters
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    NITRIC OXIDE EMISSIONS
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    Oxides of nitrogen
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    TRADE-OFF PROBLEM
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    Biodiesel