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Nitrogen fixation. Nitrogen fixation is a chemical process by which molecular dinitrogen ( N. 2) is converted into ammonia ( NH. 3 ). [ 1] It occurs both biologically and abiologically in chemical industries. Biological nitrogen fixation or diazotrophy is catalyzed by enzymes called nitrogenases. [ 2]
The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmospheric, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation ...
Gasification is a process that converts biomass - or fossil fuel -based carbonaceous materials into gases, including as the largest fractions: nitrogen (N 2 ), carbon monoxide (CO), hydrogen (H 2 ), and carbon dioxide (CO 2 ). This is achieved by reacting the feedstock material at high temperatures (typically >700 °C), without combustion, via ...
In the 1890s, pipelines from natural gas fields in Texas and Oklahoma were built to Chicago and other cities, and natural gas was used to supplement manufactured fuel gas supplies, eventually completely displacing it. Gas ceased to be manufactured in North America by 1966 (with the exception of Indianapolis and Honolulu), while it continued in ...
Although the liquid nitrogen is colder than the ambient temperature, the liquid nitrogen engine is nevertheless an example of a heat engine.A heat engine runs by extracting thermal energy from the temperature difference between a hot and a cold reservoir; in the case of the liquid nitrogen engine, the "hot" reservoir is the air in the ambient ("room temperature") surroundings, which is used to ...
A natural-gas processing plant in Aderklaa, Austria. Natural-gas processing is a range of industrial processes designed to purify raw natural gas by removing contaminants such as solids, water, carbon dioxide (CO 2), hydrogen sulfide (H 2 S), mercury and higher molecular mass hydrocarbons to produce pipeline quality dry natural gas [1] for pipeline distribution and final use. [2]
Gas reinjection. Gas reinjection is the reinjection of natural gas into an underground reservoir, typically one already containing both natural gas and crude oil, in order to increase the pressure within the reservoir and thus induce the flow of crude oil or else sequester gas that cannot be exported. This is not to be confused with gas lift ...
From director Jason Reitman, Saturday Night tells the story of the 90 minutes before SNL went live for the first time on Oct. 11, 1975. Written by Reitman and Gil Kenan, the movie is based on ...
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