Canadian chemists at Monash University have developed a method to turn old tires and polyethylene into lightweight, sulfur-free oil. The research was published in the scientific journal magazine Waste Management (WM).
The new technology is based on the fast pyrolysis process, in which materials are heated to high temperatures for short periods of time. Scientists also found that mixing tire rubber with low-density polyethylene eliminates the formation of dangerous sulfur compounds that often occur when car tires burn.
To achieve a homogeneous composition, the team froze the tire scraps using liquid nitrogen and then ground them in a regular coffee grinder to a 200-500 micrometer powder. Then the rubber was mixed with plastic raw materials and heated to a temperature of 600 ° C for 15 seconds in a special oven. As a result, researchers obtained light oil and a small amount of solid combustible residue – charcoal.
In the future, chemists plan to develop the technology to increase the volume and quality of fuel obtained from waste rubber and plastic.
Previously in Russia learned Extract precious metal gallium from aluminum waste.
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Source: Gazeta
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