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Evaluation of Biodiesel Blends with TxLED
| Sub-Grantees: | National Biodiesel Board
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The National Biodiesel Board (NBB) proposes to conduct emissions certification testing, to qualify for an Alternative Diesel Formulation, by comparing a TCEQ (48/10) reference fuel against a blend of biodiesel (B100) and the same TCEQ reference fuel. The biodiesel used will meet ASTM D 6751 specifications and the reference fuel will be a Texas specified low emission diesel reference fuel. Successful completion of these tests to demonstrate neutral or better NOx emissions when compared with a reference TxLED fuel, will qualify as an alternative diesel formulation any ASTM D6751 biodiesel blended (up to the tested volumetric blend) with any TxLED compliant fuel. The test plan will adhere to the appropriate test procedures listed in the requirements specified in Title 30, Texas Administrative Code, Chapter 114, Subchapter H, Division 2, ยง114.315 (c) for the approval of an alternative diesel formulation for TxLED.
Biodiesel and Texas Low Emission Diesel
The Texas Low Emission Diesel (TxLED) Program was developed to lower emissions of NOx and other pollutants from diesel-powered motor vehicles and non-road equipment operating in 110 counties in the eastern half of Texas, including the ozone nonattainment areas of Beaumont-Port Arthur, Dallas-Fort Worth, and Houston-Galveston-Brazoria. It applies to diesel fuel producers, importers, common carriers, distributors, transporters, bulk terminal operators, and retailers.
On December 21, 2007, Texas Commission on Environmental Quality (TCEQ) approved the National Biodiesel Board's Alternative Diesel Fuel Formulation for TxLED consisting of a biodiesel blend comprised of 5 percent or less by volume of ASTM D6751-compliant biodiesel and 95 percent or more by volume of any TxLED-compliant diesel fuel. This approval is also subject to the proper treatment and storage of the fuel.
The use of this TCEQ approved B5 formulation eliminates the need to further additize biodiesel blends of up to 5 percent biodiesel by volume when sold or supplied for use in the TxLED affected counties. Biodiesel blends above B5 and up to B20 must be additized with TCEQ approved additives before being sold or supplied for use in the TxLED affected counties. Currently, the sale or supply of biodiesel blends greater than B20 for use as a motor fuel in any of the 110 Texas counties affected by the TxLED program has not been approved by the TCEQ.
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| Page Updated/Reviewed: 06/12/2008 10:15 AM |
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