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Coal, produced over millions of years, is a finite and non-renewable resource on a human time scale. A non-renewable resource (also called a finite resource) is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption. [1] An example is carbon-based fossil fuels.
Alternative fuels, also known as non-conventional and advanced fuels, [1] are fuels derived from sources other than petroleum. [2] Alternative fuels include gaseous fossil fuels like propane , natural gas , methane , and ammonia ; biofuels like biodiesel , bioalcohol , and refuse-derived fuel ; and other renewable fuels like hydrogen and ...
Solid fuels require more destructive methods to extract/burn and often have higher carbon, nitrate and sulphate emissions. With the exception of sustainable wood/biomass solid fuel is normally considered non-renewable as it requires thousands of years to form. [3] Solid fuels are composed of organic materials and can contribute to poor air quality.
Due to the length of time it takes nature to form them, fossil fuels are considered non-renewable resources. In 2022, over 80% of primary energy consumption in the world and over 60% of its electricity supply were from fossil fuels. [5] The large-scale burning of fossil fuels causes serious environmental damage.
Alternative fuel; Alternative fuel vehicle; Banki turbine; Battery (electricity) Bioalcohol; Biodiesel; Biodiesel production; Biofuel; Biogas; Biomass; Bio-nano generator; Bitumen; Breeder reactor; Bubble fusion – a nuclear fusion reaction hypothesized to occur during sonoluminescence, an extreme form of acoustic cavitation. Coal; Coal mining ...
Renewable energy sources are essential to sustainable energy, as they generally strengthen energy security and emit far fewer greenhouse gases than fossil fuels. [49] Renewable energy projects sometimes raise significant sustainability concerns, such as risks to biodiversity when areas of high ecological value are converted to bioenergy ...
Renewable fuels are fuels produced from renewable resources. Examples include: biofuels (e.g. Vegetable oil used as fuel, ethanol, methanol from clean energy and carbon dioxide [1] or biomass, and biodiesel), Hydrogen fuel (when produced with renewable processes), and fully synthetic fuel (also known as electrofuel) produced from ambient carbon dioxide and water.
Carbon-neutral fuel is fuel which produces no net-greenhouse gas emissions or carbon footprint. In practice, this usually means fuels that are made using carbon dioxide (CO 2 ) as a feedstock . Proposed carbon-neutral fuels can broadly be grouped into synthetic fuels , which are made by chemically hydrogenating carbon dioxide, and biofuels ...