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Title: Ethyl 3-ethoxybutyrate, a new component of the transportation renewable fuel portfolio

The vast majority of energy that powers our global economy is from combustion of fossil fuels with the unintended consequence of increased deposition of carbon dioxide in the atmosphere and oceans. The scientific and technical challenges for the energy sector are to develop renewable energy sources that are sufficient to meet human energy consumption, are economically viable, and are ecologically sustainable. We investigated ethyl 3-ethoxybutyrate (EEB) as a fuel oxygenate in ultra low sulfur diesel (ULSD) with a bench-scale research engine and determined its economic potential as a renewable fuel with technoeconomic modeling using wastewater treatment plant biosolids as the feedstock for poly-3-hydroxyalkanoates (PHB), a bacterial storage polymer from which EEB can be synthesized. EEB blended well with ULSD, and cetane values of 10% and 20% v/v EEB-ULSD blends exceeded 40. A diesel internal combustion engine fueled with 5%, 10%, and 20% EEB-ULSD blends met or exceeded all tested transportation diesel fuel emissions criteria. Inedible organic feedstocks may be used to produce PHB; and thus, EEB might contribute to carbon reductions without compromising performance or air pollutant emissions. However, further research is needed to determine its role in the overall fuel portfolio. (C) 2015 Elsevier Ltd. All rights reserved.
Authors:
 [1] ;  [1] ;  [2] ;  [2] ;  [2] ;  [3] ;  [3] ;  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Alabama, Tuscaloosa, AL (United States)
  3. C/e-Solutions, Inc., Woodland, CA (United States)
Publication Date:
OSTI Identifier:
1295128
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Fuel
Additional Journal Information:
Journal Volume: 161; Journal Issue: C; Journal ID: ISSN 0016-2361
Publisher:
Elsevier
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Fuels, Engines and Emissions Research Center
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS Biofuels; Criteria pollutants; Fuel oxygenates; Technoeconomic modeling; DIETHYL-ETHER; FATTY-ACIDS; ETHANOL-D; BIODIESEL; DIESEL; ENGINE; EMISSIONS; BIOFUELS; CARBON; POLYHYDROXYALKANOATES