Cover title. Paper written for the Symposium on Stationary Combustion NOx Control, sponsored by the U.S. Environmental Protection Agency and the Electric Power Research Institute, held in Denver, Colorado, October 6-9, 1980. Final version of paper can be found in "Proceedings of the Joint Symposium on Stationary Combustion NOx Control : symposium proceedings" (EPRI WS-79-220, vol. 2). Includes bibliographical references (leaf 15).

"The Environmental Protection Agency has maintained a program to further the advancement of NOx control by flue gas treatment technology since the early 1970s. The program consists of technology assessment studies in conjunction with small scale experimental projects. These activities have shown that 80-90% reduction of NOx emissions by selective catalytic reduction with ammonia has been commercially demonstrated on gas- and oil-fired sources in Japan, and that such processes are ready for test application on coal-fired sources. The Japanese experience, combined with experimental projects in the U.S., should establish the technology as a viable control technique for use in tackling NOx environmental problems in the U.S. However, some significant technical concerns need to be addressed in demonstration projects before wide-spread application of the technology can be recommended."--Abstract.