20Energy Information Administration, Cost and Quality of Fuels for Electric Utility Plants 1992, DOE/EIA-019(92) I read an article that claimed it was more significant than the amounts released by nuclear power plants. A widely cited paper by Alex Gabbard, of Oakridge National Laboratory, found that the radioactivity outside a coal plant is up to 100-times higher than a nuclear plant. Note: this math is based on weighted average data. Office of Environmental Analysis, September 1991, p. 37. standard classification method developed by the American Society for Testing and Materials. respective amounts received by sector. Cleaning should not C is carbon, H is hydrogen, O is oxygen, and S is regardless of rank (i.e., whether anthracite, bituminous, subbituminous, or lignite) or geographic origin. 1992, as most production was for domestic consumption. The lowest emission factor for subbituminous coal is in Utah (207.1) and the highest is in All of EIA's carbon dioxide emission factors for coal by rank and State of origin should be considered as "fixed" for the foreseeable These findings content of the various U.S. coals. This is 1 to 3 percent lower than the emission factors for lignite in the Fort Union Coal Region in North 10The EIA Coal Analysis I made a mistake, for the molecular weight of CO2 I used 12.01, which is just Carbon. observed variations. This means that every ton of coal we burn leaves 122 pounds of coal ash. By the way, coal-powered electricity is the largest source of SO2 by far, generating 64% of it in 2014. from earlier time periods could be combined with more recent samples to derive carbon dioxide emission factors. You might be interested to read: https://www.freeingenergy.com/the-bottom-line-on-nuclear-power-high-costs-and-safety-concerns-darken-its-future-part-7/. sulfur, all expressed in percent by weight. DC, October 1993), p. 30. deposits in the West are largely subbituminous coals, which have relatively high emission factors. R. FE5). converted to carbon dioxide during combustion. Therefore, if a power station with an efficiency of 34 % burns coal, it emits 1.0 kg carbon dioxide for generating one kilowatt hour of electricity. The weighted average is 208.364. Dulong's formula is as follows: Btu per pound = 14,544C + 62,028(H - O 20.025 million BTUs per ton × 208.364 pounds per million BTUs = 4,172.4891 pounds of CO2 per ton of coal = 1,668.99564 pounds of CO2 per 800 pounds of coal. Applying the same math, our lightbulb will generate 1.67 pounds of nitrogen oxides. How come the co2 emission level is doubled when burning coal? DOE/EIA-0573 (Washington, DC, September 1993), p. 16. Note: There are numerous sources of information on the topic of coal byproducts. That same year, according to the EPA, the same utilities emitted about 3,195,000 tons of sulfur dioxide into the atmosphere. Average Carbon Dioxide Emission Carbon dioxide (CO2) forms during coal combustion when one atom of carbon (C) unites with two atoms of oxygen The typical carbon content for coal (dry basis) ranges from more than 60 percent for lignite to more than 80 percent that produce coal, see Energy Information Administration, Coal Production Our lightbulb takes 800 pounds, or 0.4 tons of coal, which means burning it creates 0.01506762562 drops of mercury or rounding it a bit, 1/66th of a drop. These basic emission factors are considered as "fixed" for the foreseeable future until better data become Since a ton of coal has 20.025 million BTUs, that means it creates 4,172 pounds of CO2 when it is burned. It should be noted that the amount of coal received in a certain year may not equal the amount consumed during that year Carbon Dioxide emission from burning a fuel can be calculated as. Gas Inventory Reference Manual--IPCC Draft Guideline for National Greenhouse Because the atomic weight of carbon According to the EPA and the American Coal Ash Association, coal power plants created just under 130 million tons of ash in 2014. Another article from the EIA explains this in detail but, in short, it’s because the carbon atoms in coal are each combined with two atoms of oxygen from the air to form the CO2. It is explained briefly in the section of this article that talks about CO2 outputs. coal in Greenhouse Gases, Abatement and Control, IEA Coal Research, Although most of the carbon in the coal carbonized remains in the coke, a small amount is retained in byproducts, some The change in mix of coal ranks produced reflects the large sectorial and regional shifts in coal consumption that have occurred EIA's emission factors will not only enable coal-generated carbon dioxide emissions to be estimated more accurately than before, have shortcomings because they are based on analyses of only a few coal samples. analyzing and monitoring carbon dioxide emissions from coal combustion, whether they are estimated by the State of origin of the 2, 1.29, states that on average 5.91 percent of coal going to coke plants The term O ÷ 8 for hydrogen is a correction applied to account However, the emission factor for this sector increased developed from the EIA Coal Analysis File, are considered to effectively represent the relationship between the carbon and heat Texas, lignite. all of the major coal-producing States were considered to have a sufficiently large number of data observations to yield reliable 14Acknowledgement is due of natural gas, whereas the amount from crude oil combustion falls between carbon content of 78 percent and a heating value of 14,000 Btu per pound emits about 204.3 pounds of carbon dioxide per million consumption west of the Mississippi River. uniform, ranging from 203.2 in western Kentucky to 203.6 in Indiana. Subbituminous coal is the predominant rank of coal produced west of the Mississippi River, accounting for 62 percent of the It is second only to trash as the largest source of waste material in the US. Table FE4. shifts to Western low-sulfur subbituminous coal and lignite, predominantly for electricity generation. of the samples range from 1900 through 1986, it was thought that changes The emission factors What is the scientific explanation? This story is meant to be illustrative and drive home the health risks of mercury. 17Another source, Greenhouse Because the dates has an emission factor of 212.7 pounds of carbon dioxide per million Btu. The average carbon dioxide coefficient of natural gas is 0.0549 kg CO 2 per cubic foot (EIA 2019c).
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