Fate of selenium in coal combustion: Volatilization and speciation in the flue gas

Article Abstract:

Coke and coal spiked with selenium were burned in a thermobalance to in order to confirm the theories concerning the behavior of selenium. The experiments indicate that thermodynamics can be used for trace element chemistry in combustion systems, such as used by the electric power industry.

China, France, Fossil Fuel Electric Power Generation, Selenium, Coal Thermal Electric Power, Economic aspects, Combustion research, Coal fired power plants, Thermodynamics, Flue gases, Selenium (Minerals)

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Air toxics report rejects utility mercury controls

Article Abstract:

Environmental Protection Agency's (EPA) Utility Air Toxics Report to Congress does not recommend the restriction of mercury, or other air toxics emissions, due to scientific uncertainties in relation to both the degree of human health problems and the connection between utility emissions in the US and fish contamination. The report, which was slated for release in 1995, studies 66 toxic contaminants from 684 power facilities that burn oil, gas or coal. Unlike other industries, power facilities were exempted by Congress from restriction until the EPA analyzed the power facilities' emissions.

Electric Power Generating, Electric Power Generation, Administration of Air and Water Resource and Solid Waste Management Programs, Air Pollution Control Programs, Mercury, Laws, regulations and rules, Reports, Air pollution control, United States. Environmental Protection Agency, Air pollution, Mercury (Metal)

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Sequential extractions for the study of radiocesium and radiostrontium dynamics in mineral and organic soils from Western Europe and Chernobyl areas

Article Abstract:

Radiostrontium (RS) and radiocesium (RC) aging was studied in various soils to understand the process more fully. Mediterranean loamy and loam-sandy soils, podsols and peaty podsols from near Chernobyl, and Western Europe were chosen for study. Sequential extractions were taken from soils prepared with radionuclides in a laboratory setting. When possible, results were compared with field samples. This study also compared a model generated to predict aging against statistics obtained in the lab and the field. The results showed that RC in loamy and loam-sandy soil does not seem to age. Yet, RC levels seem to decrease over time in clay soils.

Nuclear Electric Power, All Other Basic Inorganic Chemical Manufacturing, Nuclear Electric Power Generation, Ukraine, Industrial inorganic chemicals, not elsewhere classified, Strontium & Compounds, Cesium, Nuclear industry, Nuclear energy, Pollution, Nuclear power plants, Nonferrous metal industry, Nonferrous metal industries, Strontium compounds, Chernobyl, Ukraine, Strontium

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