Sentences with phrase «during coal combustion»

Carbon dioxide (CO2) forms during coal combustion when one atom of carbon (C) unites with two atoms of oxygen (O) from the air.

Not exact matches

Some experts say that coal - fired plants can only become truly clean if the government and industry pump billions of dollars into the technological upgrades required to extract the carbon dioxide gas created during combustion and sequester it semipermanently deep underground.

Similarly, coal contains trace amounts of mercury, which is set free during combustion at power plants.

The new study, published last week in the journal Environmental Research Letters, showed that emissions of sulfur dioxide, a common air pollutant released during coal and fossil fuel combustion, increased from 2000 to 2006, after which they started to decline.

Argan contains essential fatty acids and provides a great dark pigment alternative to artificial dyes like Coal Tar and Carbon Black which are formed during petroleum combustion.

The comment, made during a Jan. 17 interview with the editorial board of The San Francisco Chronicle, essentially explains how the kind of cap and trade mechanism sought by both Mr. Obama and Senator John McCain (the latter at least in his platform, if not on the stump) would make coal combustion ever more costly (unless the world finally gets serious about investing in large - scale testing and deployment of systems for capturing and burying carbon dioxide).

Natural gas is widely considered to be an environmentally cleaner fuel than coal because it does not produce detrimental by - products such as sulfur, mercury, ash and particulates and because it provides twice the energy per unit of weight with half the carbon footprint during combustion.

And for those of you who want to insist that aerosols produced by the uncontrolled burning of coal neutralized the effects of AGW from 1940 to 1979, please explain how the same argument could not be made for the effects of coal - induced aerosols during this earlier period, when no constraints on the polluting effects of coal combustion were present at all.

They compared estimated emissions for shale gas, conventional gas, coal (surface - mined and deep - mined) and diesel oil, taking into account direct emissions of CO2 during combustion, indirect emissions of CO2 necessary to develop and use the energy source and methane emissions, which were converted to equivalent value of CO2 for global warming potential.

The reference to «clean coal» was somewhat unclear in this context, because clean coal refers to attempts to recapture carbon released when coal is burnt or to otherwise reduce coal pollution during the combustion process.

Hence not surprising German engineers during the Nazi era explored technological innovations in hydro electricity, wind power, and combustion of hydrogen gas, to supplement coal, still beloved by Merkel's Germany to this day!

SO2 is formed during the combustion of coal.

Later, from 1980 to 2000, the atmospheric trend of GEM concentrations and global estimates of anthropogenic emissions of mercury to the atmosphere (mainly emissions from coal combustion) exhibit a similar trend: a large decrease during the 1980s and then stabilization between 1990 and 2000 (3, 50, 51).

Those costs come from increased health care costs, deaths and injuries that result from mining and transporting coal, and the emissions generated during the coal's combustion.

Coal combustion releases the greenhouse gases carbon dioxide (CO2) and nitrous oxide (N2O) during combustion.

The ratio of carbon to heat content was computed for each of the 5,426 selected coal samples by coal rank and State of origin under the assumption that all of the carbon in the coal is converted to carbon dioxide during combustion.

The emission factors for coal consumption involving combustion are based on the assumption that all of the carbon in coal is converted to carbon dioxide during combustion.

Actually, a very small percentage of the carbon in coal is not oxidized during combustion.

The most commonly employed systems of classification are those based on analyses that can be performed relatively easily in the laboratory — for example, determining the percentage of volatile matter lost upon heating to about 950 °C (about 1,750 °F) or the amount of heat released during combustion of the coal under standard conditions.