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RECORD NUMBER: 27 OF 36

OLS Field Name OLS Field Data
Main Title Further Study of Adipic Acid Degradation in FGD Scrubbers.
Author Meserole, F. B. ; Lewis, D. L. ; Kurzawa, F. T. ;
CORP Author Radian Corp., Austin, TX.;Industrial Environmental Research Lab., Cincinnati, OH.
Year Published 1980
Report Number RAD-202-187-72; EPA-68-02-2608; EPA-600/7-80-152;
Stock Number PB80-220155
Additional Subjects Adipic acid ; Decomposition reactions ; Scrubbers ; Air pollution control ; Additives ; Oxidation ; Limestone ; Sulfur dioxide ; Flue gas desulfurization
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB80-220155 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 75p
Abstract
The report gives results of investigations of adipic acid degradation to account for losses observed during earlier studies where it was used as an additive to improve SO2 scrubber performance. Bench-scale experiments identified the major species resulting from the oxidative degradation of adipic acid, which are: valeric acid, glutaric acid, CO2, CO, carbonate, methane, ethane, propane, and butane. Material balances based on various measurements--including gas chromatography, ion-chromatography, and total organic carbon analyses--indicate that all by-products were indentified in the laboratory tests: imbalances were less than 10% of the total carbon used. Field tests conducted on a prototype limestone scrubber using adipic acid additive detected only valeric acid and glutaric acid as degradation products. Scrubber sludge was shown to retain 200-500 ppm adipic acid by surface adsorption. In addition, the solids contained 300-800 ppm of occluded adipic acid when precipitated as calcium sulfite; occlusion was only 50 ppm when the solids were oxidized to gypsum.