Acid Rain Reduced in Eastern United States

Article Abstract:

Phase I reductions of sulfur dioxide emissions stipulated by the 1990 Clean Air Act Amendment have resulted in significant reductions of acid rain. Sulfur dioxide emissions from industry have decreased 11.5% over the East. Sulfate ions declined 9.4% in precipitation in the Northeast. Hydrogen ions were found in concentrations 9.5% less. Nitrate ion concentration however did not change. The greatest reductions were found downwind in the Ohio River Valley where the regulation of coal fired plants was mandated. Additional reductions would clearly result from the Phase II program.

Air Pollution Control, Pollutants produced & recycled, Environmental Programs, Environmental policy, Air pollution, Acid rain, Acid deposition, Lynch, James A., Bowersox, Van C., Grimm, Jefferey W., Pennsylvania State University, National Atmospheric Deposition Program

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Coal council finds power at existing plants

Article Abstract:

The National Coal Council has conducted a study of coal-fired power plants around the nation, reporting that existing facilities could be significantly improved for efficiency and performance with new equipment. However, Environmental Protection Agency requirements have slowed down the renovation process.

Production management, Air, water, & solid waste management, Environmental Protection Agency, Bituminous coal and lignite--surface, Bituminous Coal and Lignite Surface Mining, Energy via Coal & Lignite, Reports, United States. Environmental Protection Agency, Coal-fired power plants, Coal fired power plants, National Coal Council

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Enhanced effect of in-situ generated ammonium salts aerosols on the removal of NO(sub x) from simulated flue gas

Article Abstract:

Combined sulfur dioxide and nitrogen oxides removal from simulated flue gas is investigated with an enhanced wet electrostatic precipitator (wESP) that injects ammonia and/or ozone into the flue gas to create ammonium salts aerosols, enhancing sulfur dioxide and nitrogen oxides removal. The wESP system is described and the removal efficiency of the system is graphed for ozone injection with and without ammonia.

All Other Basic Inorganic Chemical Manufacturing, Ohio, Industrial Gas Manufacturing, Nitrogenous Fertilizer Manufacturing, Industrial gases, Ozone, Nitrogen Oxide Pollutants, Industrial inorganic chemicals, not elsewhere classified, Sulfur Dioxide, Nitrogenous fertilizers, Ammonia, Pollution control industry, Gaseous pollutants, Nitrogen oxides

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