Bioassays of Effluents from Stationary Sources: An Overview
Major point sources of pollutants will be with us for a long time. Ever since western civilization began to industrialize and to require high inputs of energy from combustion, pollutants have been emitted in increasing amounts. In 1977, stationary electric power sources were emitting 19.3 million tons of sulfur oxides, 7 million tons of nitrogen oxides, 3.1 million tons of suspended particles, and 0.1 million tons of volatile organic compounds into the atmosphere of the United States (U.S. EPA, 1978). These figures represent about 70% of the sulfur oxides and 40% of the nitrogen oxides emitted each year. Clearly, stationary sources of air pollutants deserve close attention on the basis of the mass of emissions alone. The upward trend in emissions from stationary sources is expected to level off or decrease in some regions of the United States after 1990 but to continue upward in others, in spite of advances in control technologies. New systems of energy conversion and fuel processing, for example, fluidized bed combustion and coal gasification, will introduce new pollution control problems. The industrial growth anticipated in synthetic fuels will increase the need for stringent analysis of the potential hazardous impact of pollutants in the coming years.
KeywordsNitrogen Oxide Environmental Assessment Stationary Source Coal Gasification Sulfur Oxide
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