STORY LEAD: Cleaner Air, Fewer Exhaust Emissions May Come from Soybean Oil in Jet Fuels
___________________________________________ ARS News Service Agricultural Research Service, USDA July 9, 2001 Linda McGraw, (309) 681-6530, [EMAIL PROTECTED] ___________________________________________ A little soy oil can go a long way. Agricultural Research Service scientists report that after winterizing, biodiesel fuel that contains soy oil can be safely blended with noncommercial jet fuel used in military aircraft. The ultimate payoff will be cleaner air and larger profits for U.S. soybean growers. In laboratory studies, ARS chemical engineer Robert O. Dunn added small amounts of methyl soyate (SME)--esters from fatty acids of soybean oil--with noncommercial jet fuel (JP-8). Dunn has developed a three-step winterization process for biodiesel fuel that involves mixing in additives, chilling the fuel and filtering out solids. In previous tests, Dunn produced biodiesel fuels capable of starting diesel engines at temperatures as low as 5 degrees Fahrenheit, making them comparable to petroleum-based diesel fuels. Using biodiesel fuel blends that haven't been winterized could limit aircraft's ability to fly at high altitudes, where cold temperatures can cause crystal formation, blocking fuel filters and plugging fuel lines. The most promising aspect of this work: Winterized SME did not form solid particles when exposed to a range of slightly below zero to -52 degrees F in the laboratory. But eventually even winterized SME blends will form solid particles when temperature is low enough. The research continues to expand the lower limits of temperature so that winterized, blended biodiesel fuels can function safely in military aircraft. The impetus behind the research comes from the Clean Air Act and its more recent amendments that call for a reduction of harmful emissions from commercial and military aircraft. Biodiesel is a renewable commodity and produced domestically. The U.S. currently imports 50 percent of its oil at a cost of $60 billion annually. Another plus: Biodiesel is nonflammable, making it relatively safe to store and handle and environmentally innocuous because it's biodegradable. A full report of this research can be found in the July issue of Agricultural Research magazine, which is online at: http://www.ars.usda.gov/is/AR/archive/jul01/jet0701.htm ___________________________________________ This item is one of the news releases and story leads that ARS Information distributes on weekdays to fax and e-mail subscribers. You can also get the latest ARS news on the World Wide Web at www.ars.usda.gov/is/pr/thelatest.htm. * Feedback and questions to ARS News Service via e-mail: [EMAIL PROTECTED] * ARS Information Staff, 5601 Sunnyside Ave., Room 1-2251, Beltsville MD 20705-5128, (301) 504-1617, fax 504-1648. Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
