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Testing of hexacyanoferrates for decontamination of radioactive wastewaters at Oak Ridge National Laboratory

Description: These studies that under certain conditions, hexacyanoferrates are effective for decontamination of two significantly different wastewaters generated by ORNL. In both cases, however, the application of these materials is not a simple task, and further development work will be necessary to explore the variables which can impact hexacyanoferrate effectiveness. In treatment of simulated low-level liquid waste concentrate, effectiveness of cesium removal was most significantly affected by pH, and m… more
Date: January 1, 1991
Creator: Kent, T. E.; Arnold, W. D.; Perona, J. J.; Fowler, V. L.; McTaggart, D. R. & Richardson, S. A.
Partner: UNT Libraries Government Documents Department
open access

Source terms for airborne effluents

Description: The origin and nature of fuel cycle wastes are discussed with regard to high-level wastes, cladding, noble gases, iodine, tritium, /sup 14/C, low-level and intermediate-level transuranic wastes, non-transuranic wastes, and ore tailings. The current practice for gaseous effluent treatment is described for light water reactors and high-temperature gas-cooled reactors. Other topics discussed are projections of nuclear power generation; projected accumulation of gaseous wastes; the impact of nuclea… more
Date: January 1, 1976
Creator: Blomeke, J. O. & Perona, J. J.
Partner: UNT Libraries Government Documents Department
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Low-Pressure Transfer Operations

Description: Low-pressure transfer operations have been used or proposed which utilize sorption or condensation processes to induce flow. The applications include vacuum pumping, as well as transport of gases between vessels. The unsteady-state operation and the coupling of sorption/condensation with the flow rate produce interestingly complex behavior.
Date: January 1, 1982
Creator: Watson, J. S.; Fisher, P. W. & Perona, J. J.
Partner: UNT Libraries Government Documents Department
open access

Nitrogen oxide absorption into water and dilute nitric acid in an engineering-scale sieve-plate column with plates designed for high gas-liquid interfacial area

Description: The absorption of gaseous NO/sub x/ compounds into water and dilute HNO/sub 3/ was studied in a three-stage sieve-plate column with plates designed for high gas-liquid interfacial area. The performance of the column was measured while several operating parameters were varied. The results of the study indicate the importance of three mechanisms in the absorption of gaseous NO/sub x/ (NO/sub 2/ + 2N/sub 2/O4 + NO) compounds: (1) the absorption of NO/sub 2//sup */ (NO/sub 2/ + 2N/sub 2/O4) which r… more
Date: January 1, 1978
Creator: Counce, R. M.; Groenier, W. S.; Klein, J. A. & Perona, J. J.
Partner: UNT Libraries Government Documents Department
open access

Vacuum sorption pumping at cryogenic temperatures of argon and oxygen on molecular sieves

Description: Cryosorption pumping is a method of excavating enclosed volumes by adsorbing gas on a deep bed of solid sorbent (typically a zeolite) at cryogenic temperatures. Modeling the dynamic behavior of these systems for air pumping requires information on two major constituents of air, oxygen and argon, which had not been previously studied, as well as data on a nonadsorbing specie, helium. Deep beds of Davison 4A molecular sieves were subjected to a metered flow of pure gas and the pressure history of… more
Date: January 1, 1988
Creator: Perona, J. J.; Gibson, M. R. & Byers, C. H.
Partner: UNT Libraries Government Documents Department
open access

Mercury removal from liquid and solid mixed waste

Description: Based on bench-scale laboratory experiments, the following conclusions were reached: Sulfur-impregnated, activated, carbon pellets (Mersorb) can be used to remove mercury (Hg{sup 2+}) to below EPA`s toxic characteristic level (0.2 mg/L). Mersorb works under acid conditions (pH 2) but its capacity is reduced by approximately 50% compared with neutral conditions. Competing ions present in the target waste stream reduced the Mersorb capacity by 50%. Mersorb appears to be economical compared with l… more
Date: April 1, 1995
Creator: Gates, D. D.; Klasson, K. T.; Corder, S. L.; Cameron, P. A.; Perona, J. J. & Chao, K. K.
Partner: UNT Libraries Government Documents Department
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