Russian scientists have devised a method for producing biokerosene, a more environmentally friendly aviation fuel, using sawdust and sunflower seed husks as raw materials.
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Tests have shown that the new fuel complies with the environmental standards of the International Civil Aviation Organization, according to the journal "Science in Siberia" of the Siberian branch of the Russian Academy of Sciences.
Bio-kerosene has several advantages over kerosene derived from petroleum products. Modern requirements from the International Civil Aviation Organization (ICAO) include, in addition to reducing harmful emissions, lowering noise levels from aircraft operation.
The researchers also studied this factor, as changes in sound pressure levels are linked to the composition of the fuel used, and therefore to the noise level produced by its combustion. The absence of aromatic compounds contributes to reducing noise during fuel combustion.
The researchers pointed out that burning biokerosene, like petroleum-based kerosene, produces harmful emissions. However, a portion of these emissions is offset by the absorption of carbon dioxide by the plants that use the biofuel as a raw material during their growth. This allows for a more closed carbon cycle and reduces the accumulation of emissions in the atmosphere compared to fossil fuels.
The magazine's statement read: "Specialists tested SAF-type kerosene, i.e., sustainable aviation fuel, when burned in gas turbines, and compared the engine operating characteristics when using kerosene produced from petroleum raw materials and bio-kerosene. The results proved that the new bio-fuel meets the requirements for sustainable and stable operation of aviation engines, and SAF kerosene also meets the environmental standards of the International Civil Aviation Organization."
In producing biokerosene, scientists used pine sawdust and sunflower seed husks, which belong to what is known as second-generation non-food biomass.
The researchers explained that the choice of these raw materials is due to their lack of competition with the food industry, as they are not used in food production, as well as their low carbon footprint compared to fossil fuels.
These raw materials are widely available in Russia, a world leader in sunflower production, generating millions of tons of husks annually. Researchers believe these raw materials meet environmental efficiency and technological feasibility requirements and possess commercial potential, making them a promising option for reducing the carbon footprint of the aviation sector.
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