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  2. Biogas - Wikipedia

    en.wikipedia.org/wiki/Biogas

    Biogas is a gaseous renewable energy source [1] produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste, wastewater, and food waste. Biogas is produced by anaerobic digestion with anaerobic organisms or methanogens inside an anaerobic digester, biodigester or a bioreactor.

  3. Renewable natural gas - Wikipedia

    en.wikipedia.org/wiki/Renewable_natural_gas

    Renewable natural gas (RNG), also known as biomethane, is a renewable fuel and biogas which has been upgraded to a quality similar to fossil natural gas and has a methane concentration of 90% or greater. [1]

  4. Biofuel - Wikipedia

    en.wikipedia.org/wiki/Biofuel

    The production of biofuels can be very energy intensive, which, if generated from non-renewable sources, can heavily mitigate the benefits gained through biofuel use. A solution proposed to solve this issue is to supply biofuel production facilities with excess nuclear energy, which can supplement the power provided by fossil fuels. [112]

  5. Alternative fuel - Wikipedia

    en.wikipedia.org/wiki/Alternative_fuel

    Renewable natural gas or biogas is a methane-based gas with similar properties to natural gas that can be used as transportation fuel. Present sources of biogas are mainly landfills , sewage , and animal/ agri-waste .

  6. Bioenergy - Wikipedia

    en.wikipedia.org/wiki/Bioenergy

    Bioenergy is a type of renewable energy that is derived from plants and animal waste. [1] The biomass that is used as input materials consists of recently living (but now dead) organisms, mainly plants. [2]

  7. Carbon-neutral fuel - Wikipedia

    en.wikipedia.org/wiki/Carbon-neutral_fuel

    Water undergoes electrolysis at high temperatures to form hydrogen gas and oxygen gas. The energy to perform this is extracted from renewable sources such as wind power. Then, the hydrogen is reacted with compressed carbon dioxide captured by direct air capture. The reaction produces blue crude which consists of hydrocarbon.

  8. Biogasoline - Wikipedia

    en.wikipedia.org/wiki/Biogasoline

    However, unlike traditional gasoline, which are fractionally distilled from crude oil and thus are non-renewable fossil fuels, biogasolines are renewable biofuels made from algal materials, energy crops such as beets and sugarcane, and other cellulosic residues traditionally regarded to as agricultural waste. [1]

  9. Biomass (energy) - Wikipedia

    en.wikipedia.org/wiki/Biomass_(energy)

    Bioethanol is used as a vehicle fuel. Renewable natural gas—also called biogas or biomethane—is produced in anaerobic digesters at sewage treatment plants and at dairy and livestock operations. It also forms in and may be captured from solid waste landfills. Properly treated renewable natural gas has the same uses as fossil fuel natural gas ...