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  2. Substitute natural gas - Wikipedia

    en.wikipedia.org/wiki/Substitute_natural_gas

    Substitute natural gas (SNG), or synthetic natural gas, is a fuel gas (predominantly methane, CH 4) that can be produced from fossil fuels such as lignite coal, oil shale, or from biofuels (when it is named bio-SNG) or using electricity with power-to-gas systems.

  3. Methanation - Wikipedia

    en.wikipedia.org/wiki/Methanation

    Methanation is an important step in the creation of synthetic or substitute natural gas (SNG). [7] Coal or wood undergo gasification which creates a producer gas that must undergo methanation in order to produce a usable gas that just needs to undergo a final purification step.

  4. Alternative fuel - Wikipedia

    en.wikipedia.org/wiki/Alternative_fuel

    Because natural gas emits less smog-forming pollutants than other fossil fuels when combusted, cleaner air has been measured in urban localities switching to natural gas vehicles. [64] Tailpipe CO 2 can be reduced by 15–25% compared to gasoline, diesel. [65] The greatest reductions occur in medium and heavy duty, light duty and refuse truck ...

  5. Gasification - Wikipedia

    en.wikipedia.org/wiki/Gasification

    The 32 MW dual fluidized bed gasification of the GoBiGas project in Gothenburg, Sweden, produced around 20 MW of substitute natural gas from forest residues and fed it into the natural gas grid since December 2014. [36] The plant was permanently closed due to technical and economical problems in April 2018.

  6. Coal gasification - Wikipedia

    en.wikipedia.org/wiki/Coal_gasification

    High prices of oil and natural gas led to increased interest in "BTU Conversion" technologies such as gasification, methanation and liquefaction. The Synthetic Fuels Corporation was a U.S. government-funded corporation established in 1980 to create a market for alternatives to imported fossil fuels (such as coal gasification). The corporation ...

  7. Renewable natural gas - Wikipedia

    en.wikipedia.org/wiki/Renewable_natural_gas

    Renewable natural gas can also be converted into liquefied natural gas (LNG) or compressed natural gas (CNG) for direct use as fuel in transport sector. In the United States, projections of the ultimate supply potential for RNG vary. An analysis conducted in 2011 by the Gas Technology Institute determined that renewable gas from waste biomass ...