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United States Department of Agriculture

Agricultural Research Service


Location: Bio-oils Research

2012 Annual Report

1a. Objectives (from AD-416):
Improve the fuel properties and performance of vegetable oils and their derivatives as alternative fuels, extenders, and additives in the operation of compression-ignition (diesel) engines for on-road and off-road applications. Address technical problems identified by stakeholders and customers. Specific objectives for this project are: 1) Enable new commercially-viable alternative fuel formulations with improved cold weather start-up and operability performance without compromising fuel quality as defined by appropriate standard fuel specifications; 2) Enable new commercially-viable biodiesel formulations with improved storage stability with respect to oxidative degradation. Develop rapid measurement methods for monitoring effects of degradation on biodiesel fuel quality during storage, as defined by appropriate standard fuel specifications; 3) Enable new, commercially-viable biodiesel fuels derived from novel oilseed crops (especially inedible plant species), vegetable oils with modified fatty ester composition, and non-traditional feedstocks such as algae and biomass; 4) Enable new, commercially-viable analytical methods for biodiesel and its minor constituents and other fuel quality issues to enhance market acceptance of biodiesel fuels; and 5) Develop technologies that expand the markets for glycerol by enabling the commercial conversion of glycerol and its derivatives to chemicals and components in products such as surfactants, emulsifiers, fuel additives, dispersants and/or flocculating agents as well as biodegradable polymer products such as polyesters, polyethers and polyurethanes.

1b. Approach (from AD-416):
Biodiesel is an alternative diesel fuel derived from vegetable oils, animal fats, used oils or algae, and other biomass feedstocks. While it is competitive with (in some aspects even technically superior to) petroleum-derived diesel fuel, its use is still affected by technical and supply issues that hinder more widespread commercialization. This project proposes to improve the fuel properties of vegetable oils as well as other feedstocks and their derivatives as alternative diesel fuels, extenders, and additives in the operation of compression-ignition (diesel) engines for on-road and off-road applications. Specific objectives for this project include: 1) Improve cold weather start-up and operability; 2) Enhance understanding of oxidative stability and provide methods for its improvement; 3) Provide novel fuel formulations, including alternative and conventional feedstocks with different fatty acid profiles as well as novel additives; 4) Develop analytical methods for minor constituents of biodiesel and other fuel quality issues; and 5) Development of specialty chemicals and products such as biodegradable polymers from biodiesel co-products (glycerol). Overall, this research will lead to technically improved biodiesel fuels that are more competitive in the marketplace, enhanced analyses, and new, economically competitive and environmentally friendly products from glycerol.

3. Progress Report:
The effects of small concentrations of minor constituents and contaminants on biodiesel fuel properties such as oxidative stability and cold flow behavior were investigated. Numerous alternative feedstocks for biodiesel with the goal of increasing biodiesel supply were researched including those with alternative fatty acid profiles for improving biodiesel fuel properties. Other feedstocks were evaluated for potential properties. The results also aid in establishing structure-property relationships for biodiesel components. Additives to improve oxidative stability, for which gossypol is promising, and cold flow of biodiesel were prepared and tested. Seventeen collaborations with various universities (Clemson; Iowa State; Oklahoma State; Western Washington; Universidade Federal de Vicosa, Vicosa, Brazil; University of Delaware; University of Idaho; Universiti Putra Malaysia; University of Nevada-Reno) and institutions (Argonne National Laboratory, Argonne, IL; Atlantic Greenfuels, Beachwood, OH; Illinois Sustainable Technology Center, Urbana-Champaign, IL; LubriGreen, Irvine, CA; National Renewable Energy Laboratory, Golden, CO; Sandia National Laboratory, Livermore, CA; Southwest Research Institute, San Antonio, TX; and Woods Hole Oceanograpic Institution, Woods Hole, MA) leading to research results on combustion, fuel properties, and fuel composition that were incorporated in publications or will be used in pending publications and for supporting on-going research as well as biodiesel education. Collaborated with the Agricultural Research Service, Eastern Regional Research Center on synthesis and testing of new cold flow additives for biodiesel and biolubricants.

4. Accomplishments

Review Publications
Joshi, H., Moser, B.R., Walker, T. 2012. Mixed alkyl esters from cottonseed oil: Improved biodiesel properties and blends with ultra-low sulfur diesel fuel. Journal of the American Oil Chemists' Society. 89(1):145-153.

Moser, B.R., Vaughn, S.F. 2012. Efficacy of fatty acid profile as a tool for screening feedstocks for biodiesel production. Biomass and Bioenergy. 37:31-41.

Moser, B.R. 2012. Efficacy of Gossypol as an antioxidant additive in biodiesel. Renewable Energy. 40:65-70.

Moser, B.R. 2012. Biodiesel from alternative oilseed feedstocks: camelina and field pennycress. Biofuels. 3(2):193-209.

Knothe, G.H., Cermak, S.C., Evangelista, R.L. 2012. Methyl esters from vegetable oils with hydroxy fatty acids: Comparison of lesquerella and castor methyl esters. Fuel. 96:535-540.

O'Neil, G.W., Carmichael, C.A., Goepfert, T.J., Fulton, J.M., Knothe, G.H., Ling Lau, C., Lindell, S.R., Mohammady, N., Van Mooy, B., Reddy, C.M. 2012. Beyond fatty acid methyl esters: Expanding the renewable carbon profile with alkenones from Isochrysis sp. Energy and Fuels. 26(4):2434-2441.

Knothe, G.H., Steidley, K.R. 2011. Kinematic viscosity of fatty acid methyl esters: Prediction, calculated viscosity contribution of esters with unavailable data, and carbon-oxygen equivalents. Fuel. 90:3217-3224.

Knothe, G.H. 2011. A technical evaluation of biodiesel from vegetable oils vs. algae. Will algae-derived biodiesel perform? Green Chemistry. 13:3048-3065.

Moser, B.R. 2012. Preparation of fatty acid methyl esters from hazelnut, high-oleic peanut and walnut oils and evaluation as biodiesel. Fuel. 92:231-238.

Rashid, U., Anwar, F., Knothe, G.H. 2011. Biodiesel from Milo (Thespesia populnea L.) seed oil. Biomass and Bioenergy. 35:4034-4039.

Moser, B.R., Vaughn, S.F. 2012. Biodiesel from corn distillers dried grains with solubles: Preparation, evaluation and properties. BioEnergy Research. 5:439-449.

Dunn, R.O. 2012. Effects of high-melting methyl esters on crystallization properties of fatty acid methyl ester mixtures. Transactions of the American Society of Agricultural and Biological Engineers. 55(2):637-646.

Hughes, S.R., Moser, B.R., Robinson, S., Cox, E.J., Harmsen, A.J., Friesen, J.A., Bischoff, K.M., Jones, M.A., Pinkleman, R., Bang, S.S., Tasaki, K., Doll, K.M., Qureshi, N., Liu, S., Saha, B.C., Jackson, Jr., J.S., Cotta, M.A., Rich, J.O., Caimi, P. 2012. Synthetic resin-bound truncated Candida antarctica lipase B for production of fatty acid alkyl esters by transesterification of corn and soybean oils with ethanol or butanol. Journal of Biotechnology. 159:69-77. DOI: 10.1016/j.jbiotec.2012.01.025.

Moser, B.R. 2012. Efficacy of specific gravity as a tool for prediction of biodiesel-petroleum diesel blend ratio. Fuel. 99:254-261.

Ngo, H., Dunn, R.O., Sharma, B., Foglia, T. 2010. Synthesis and physical properties of isostearic acids and their esters. European Journal of Lipid Science and Technology. 113:180-188.

Last Modified: 10/19/2017
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