Biodiesel is available in a number of different blends. It can be used as a fuel on its own (B100), or blended with petrodiesel in B5 (5% biodiesel) and B20 (20% biodiesel). Up to 5% biodiesel can be included in any diesel sold in Australia without any additional labeling.
B20 is currently not available for general retail sale, but can be made available for fleet users. Should you wish to purchase B20 for use in your fleet vehicles, please contact the Association.
The Australian government developed a set of standards for biodiesel in 2003, based on B100, which is summarized in the table below. The biodiesel standard was developed following the release of a technical paper that considered the production and use of biodiesel in Australia as well as possible impacts on engine operation and emissions. Submissions to a discussion paper on a national standard for biodiesel were then considered, which informed the creation of the standard listed below. The government is also considering creating fuel standards and labeling requirements for B20 blends.
1If biodiesel contains C-17 methyl esters, the ester content may be measured by using the modified procedure set out in S.Schober, I.Seidl and M. Mittelbach, Ester content evaluation in biodiesel from animal fats and lauric oils, European Journal of Lipid Science and Technology 108 (2006) 309-314.
The National Renewable Energy Laboratory in the United States has released a handbook titled “Biodiesel Handling and Use Guide”, designed for those who blend, store, distribute and use biodiesel fuels. While the publication has been produced in America, the principles within it are equally applicable to Australian producers, distributers, retailers and consumers, and thus it is a handy resource. You can access the handbook here.