Urban areas account for 2% of the world's land but are responsible for 40%–70% of global anthropogenic, or human-made CO2 emissions. Quantitative fossil-fuel and greenhouse gas (GHG) variation tracking in a city's most ...
Environment
Jun 30, 2022
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Although it is important to control emissions of CO2 to mitigate global warming, atmospheric levels of the gas are also related to how quickly it is removed from the air by the means of land and ocean storage. The micronutrient ...
Environment
May 24, 2022
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25
To keep the planet from warming more than 1.5°C above pre-industrial levels, most countries, including the U.S., have goals to reach net zero by 2050. Net zero means that all greenhouse gas emissions produced are counterbalanced ...
Environment
Apr 22, 2022
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Research on the ground following two large wildfires in California's Sierra Nevada mountain range showed the vast majority of carbon stored in trees before the blazes was still there after the fires.
Environment
Mar 14, 2022
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New UC Riverside research shows how, after it rains, microbes in desert soil convert one form of pollution into another—laughing gas.
Environment
Mar 09, 2022
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A team of researchers from Indiana University, Purdue University, Université de Lille, Center for Energy and Environment and Edelweiss Technology Solutions, LLC, has found that people using commercial cleaners with certain ...
Cornell chemists have discovered a class of nonprecious metal derivatives that can catalyze fuel cell reactions about as well as platinum, at a fraction of the cost.
Materials Science
Feb 03, 2022
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539
New research conducted at Lawrence Livermore National Laboratory (LLNL) explores the expansion of a classical mechanics model, that has been useful for understanding asymmetries in inertial confinement fusion (ICF) implosions, ...
Plasma Physics
Jan 20, 2022
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97
Recently, there has been growing demand for DeNOx catalysts that can treat nitrogen oxides (NOx) at low temperatures to increase energy efficiency when processing flue gas in industrial combustion facilities. NOx are emitted ...
Materials Science
Jan 17, 2022
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50
Just like cars need fuel to run, microorganisms need energy to live.
Ecology
Nov 22, 2021
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Combustion (English pronunciation: /kəmˈbʌs.tʃən /) or burning is the sequence of exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat and conversion of chemical species. The release of heat can result in the production of light in the form of either glowing or a flame. Fuels of interest often include organic compounds (especially hydrocarbons) in the gas, liquid or solid phase.
In a complete combustion reaction, a compound reacts with an oxidizing element, such as oxygen or fluorine, and the products are compounds of each element in the fuel with the oxidizing element. For example:
A simple example can be seen in the combustion of hydrogen and oxygen, which is a commonly used reaction in rocket engines:
The result is water vapor.
Complete combustion is almost impossible to achieve. In reality, as actual combustion reactions come to equilibrium, a wide variety of major and minor species will be present such as carbon monoxide and pure carbon (soot or ash). Additionally, any combustion in atmospheric air, which is 78% nitrogen, will also create several forms of nitrogen oxides.
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