
San Francisco is one innovative and leading edge city.
Did you know that "... In April, the city banned plastic shopping bags, ... bottled water in some restaurants, and ... Styrofoam takeout containers."?
More interestingly .... "... plans are now under way to turn ... waste vegetable oil produced by the city's 2600 restaurants into biodiesel. The goal: offsetting 20% of the diesel fuel used by city buses."
"Under a $1.3 million dollar program, the San Francisco Public Utilities Commission (SFPUC) will turn a very large and problematic waste product into a renewable fuel:"
"Fats, oils and grease have been a significant problem for San Francisco’s sewers, ... When not disposed of properly, ... causes odors, attracts rats and leads to backups in The City’s sewer system, ...""
"... any restaurant with a deep fryer produces a steady stream of waste vegetable oil (WVO). ... [which] is generally stored and picked up by chemical companies, ... In some parts of the country the oil is just thrown away."
"But it's relatively easy to turn WVO into a fuel, ... SFPUC official Lewis Harrison stated that at least 1 million gallons of biodiesel could be produced ... which is "more than enough" to run the city's entire bus fleet on B20. Since WVO is a waste stream, offsetting petro-diesel usage with WVO biodiesel is particularly advantageous: the use of 1 million gallons of WVO-biodiesel would offset 19,600,000 lbs (9800 tons) of carbon dioxide emissions each year. It also has significant economic and public health benefits: municipal biodiesel production should beat the $4/gallon price of fuel in San Francisco, and B20 biodiesel blends cut diesel soot emissions by 20-40%.
SFPUC officials are hoping to have the city buses running on B20 by the end of 2007.
Via: GreenOptions.com Link