A study by Tsinghua University, the Desert Research Institute in Nevada and Greyrock Energy, a developer of gas-to-liquids technology reveals that PM emissions in Beijing could be reduced by simply mixing 20% synthetic diesel with normal diesel. This requires no additional changes to the vehicles or material changes to infrastructure; the blend could then reduce up to 19% of PM emissions from vehicles, so the study partners claim. Diesel vehicles were chosen in this study because they contribute about 74% of the particulate matter (PM) from vehicle emissions, particularly in Beijing.
Greyrock, one of the study partners can produce synthetic diesel fuel and gasoline blends from various sources such as flare gas, natural gas, industrial waste gas, CO2, and biomass, but as the production is still quite costly, the share of synthetic diesel is at about less than 0.25% of the global volume of oil products.
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