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oxygenate meant to reduce automotive emissions-there is a much greater sensitivity among water purveyors nationwide of the environmental implications of fuel-related compounds. There are other issues that should probably be dealt with in evaluating the role of urea for NOx reduction. For example, what are the lifecycle environmental impacts of urea, that is, the potential impacts associated with its synthesis from natural gas; distribution via barge, tank cars, etc.; storage at dispensing sites; and finally end use in vehicles. Economic considerations would involve the costs of natural gas and deionized water plus any other additives that may be necessary to inhibit microbial oxidation in tanks. Work performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under contract No. W-7405-ENG-48.
Layton, D.Urea for SCR-based NOx Control Systems and Potential Impacts to Ground Water Resources,
report,
January 3, 2002;
Livermore, California.
(https://digital.library.unt.edu/ark:/67531/metadc742324/m1/4/:
accessed March 19, 2024),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT Libraries Government Documents Department.