Where is Biodiesel Used?
Biodiesel can be used as a pure fuel or blended with petroleum in any percentage. B20 (a blend of 20 percent by volume Biodiesel with 80 percent by volume petroleum diesel) has demonstrated significant environmental benefits with a minimum increase in cost for fleet operations and other consumers.
It’s a better lubricator than petro-diesel and tends to be a better cleaning agent for your fuel system. It also has a higher Cetane (or CN) rating, which means it’s a better fuel. Biodiesel is not compatible with ordinary rubber. If your fuel system has rubber fittings they can be replaced with synthetic rubber to counter this, However, most modern diesel engines do not use rubber fittings anymore.
The use of Biodiesel in a conventional diesel engine results in substantial reduction of unburned hydrocarbons, carbon monoxide, and particulate matter compared to emissions from diesel fuel. In addition, the exhaust emissions of sulfur oxides and sulfates (major components of acid rain) from Biodiesel are essentially eliminated compared to diesel. Of the major exhaust pollutants, both unburned hydrocarbons and nitrogen oxides are ozone or smog forming precursors. The use of Biodiesel results in a substantial reduction of unburned hydrocarbons. Emissions of nitrogen oxides are either slightly reduced or slightly increased depending on the duty cycle of the engine and testing methods used. Based on engine testing, using the most stringent emissions testing protocols required by the Environmental Protection Agency (EPA) for certification of fuels or fuel additives in the US, the overall ozone forming potential of the speciated hydrocarbon emissions from Biodiesel was nearly 50 percent less than that measured for diesel fuel.
Biodiesel is registered as a fuel and fuel additive with the EPA and meets clean diesel standards established by the California Air Resources Board (CARB). Neat (100 percent) Biodiesel has been designated as an alternative fuel by the Department of Energy (DOE) and the US Department of Transportation (DOT).
The first renewable fuel volume mandate in the United States – The Renewable Fuels Standard (RFS-2)– was created under the Energy Policy Act (EPAct) of 2005. Under the Energy Independence and Security Act (EISA) of 2007, the RFS program was expanded and now specifies four unique categories of renewable fuel: cellulosic biofuel, biomass-based diesel, advanced biofuel and total renewable fuel.
WRE Biodiesel qualifies for both the biomass-based diesel category and the advanced biofuel category by achieving a lifecycle Green House Gas (GHG) emissions-reduction of at least 50 percent compared to baseline petroleum. The RFS-2 requires a minimum of 1 billion gallons of biomass-based diesel be used annually between 2011 and 2022. It also requires the country use no less than 21 billion gallons of advanced biofuels by 2022. WRE Biodiesel qualifies for compliance under both categories.
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