Download or read book The Radiolytic and Chemical Degradation of Organic Ion Exchange Resins Under Alkaline Conditions written by Luc R. van Loon and published by . This book was released on 1995 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Radiolytic and Chemical Degradation of Organic Ion Exchange Resin Under Alkaline Conditions written by L.R. van Loon and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ion Exchange Pretreatment of Alkaline Radwaste for Cesium Removal written by and published by . This book was released on 1994 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: A cation exchange resin has been tested for its ability to remove the Cs ion from simulants of highly alkaline liquid nuclear wastes found at the Savannah River Site, Oak Ridge, and Hanford. The resin is a condensation polymer of the K salt of resorcinol and formaldehyde. It removes milli- and micromolar amounts of Cs from solutions that contain as high as 11 molar Na. Small column tests indicate that approximately 200 column volumes of SRS simulant and 205 column volumes of OR Tank 25 supernatant simulant can be processed before the resin requires regeneration. For these two wastes, a carousel arrangement of two columns in series and a third in reserve can be used effectively in a process. Hanford 101-AW simulant generates a less sharp breakthrough profile with this resin, though an operation using a maximum of three columns in series with another column off-line for regeneration would be effective if the resin beds are allowed to reach about 90% breakthrough before taking them out of service. Parameters that effect the performance of the resin with a particular feed solution are the concentrations of the two primary ions of interest, Cs+ and Na+, as well as the concentrations of K+ and OH−. A further ramification of the hydroxide ion concentration is its role in assisting oxidation of the resin, thereby destroying its usefulness in cesium removal. Although the performance of the resin is unaffected at doses of 1 E+8 rad ionizing radiation, it shows noticeable degradation after storage for 100 hours in alkaline solutions, generating quinone and ketone groups, as determined from C-13 NMR and by an increase in total organic C content of the contacting solution. Gases detected from the radiolysis of the resin/simulant mixture are CO2 from the resin, N2O from nitrate in the simulant, and H2 possibly from resin and simulant. Oxygen depletion in the mixture results from radiolysis and chemical degradation.
Download or read book The Microbiology of Nuclear Waste Disposal written by Jonathan R. Lloyd and published by Elsevier. This book was released on 2020-10-22 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Microbiology of Nuclear Waste Disposal is a state-of-the-art reference featuring contributions focusing on the impact of microbes on the safe long-term disposal of nuclear waste. This book is the first to cover this important emerging topic, and is written for a wide audience encompassing regulators, implementers, academics, and other stakeholders. The book is also of interest to those working on the wider exploitation of the subsurface, such as bioremediation, carbon capture and storage, geothermal energy, and water quality. Planning for suitable facilities in the U.S., Europe, and Asia has been based mainly on knowledge from the geological and physical sciences. However, recent studies have shown that microbial life can proliferate in the inhospitable environments associated with radioactive waste disposal, and can control the long-term fate of nuclear materials. This can have beneficial and damaging impacts, which need to be quantified. - Encompasses expertise from both the bio and geo disciplines, aiming to foster important collaborations across this disciplinary divide - Includes reviews and research papers from leading groups in the field - Provides helpful guidance in light of plans progressing worldwide for geological disposal facilities - Includes timely research for planning and safety case development
Download or read book Ion Exchange Resins written by Inamuddin and published by Materials Research Forum LLC. This book was released on 2023-01-25 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on the applications of ion exchange resins in processes such as the separation and purification of proteins and vitamins, the selective separation of toxic metals and the separation and purification of bioactive molecules. Specific topics include drug delivery, clinical applications, water softening and sustained drug delivery. Keywords: Ion Exchange Resins, Protein Separation and Purification, Partition and Purgation of Vitamins, Toxic Heavy Metal Ions, Bioactive Molecules, Sustained Drug Release, Ion-Exchange Chromatography, Clinical Applications, Electrodialysis, Ultrasound, Water Softening.
Download or read book CRC Handbook of Ion Exchange Resins Volume VI written by Johann Korkisch and published by Routledge. This book was released on 2017-09-20 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: The six-volume CRC Handbook of Ion Exchange Resins reviews the application of ion exchange resins to inorganic analytical chemistry. Extracted from over 6,000 original publications, it presents the information in over 1,000 tables complemented by concise descriptions of analytical methods involving virtually all the elements of the periodic table. Also, the ion exchange characteristics of the elements, as well as other important information required by analysis using ion exchange resins, are presented in separate tables. The methods that allow the multi-element analysis of complex matrices are emphasized. This work includes a general discussion of the theoretical, instrumental, and other principles underlying the various applications of ion exchange resins in inorganic analytical chemistry with special attention focused on techniques based on ion chromatography.
Download or read book Ion Exchange Resins written by Inamuddin and published by Materials Research Forum LLC. This book was released on 2023-01-25 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on the applications of ion exchange resins in processes such as the separation and purification of proteins and vitamins, the selective separation of toxic metals and the separation and purification of bioactive molecules. Specific topics include drug delivery, clinical applications, water softening and sustained drug delivery. Keywords: Ion Exchange Resins, Protein Separation and Purification, Partition and Purgation of Vitamins, Toxic Heavy Metal Ions, Bioactive Molecules, Sustained Drug Release, Ion-Exchange Chromatography, Clinical Applications, Electrodialysis, Ultrasound, Water Softening.
Download or read book Radiation Degradation in EPICOR 2 Ion Exchange Resins written by and published by . This book was released on 1990 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Low-Level Waste Data base Development -- EPICOR-II Resin/Liner Investigation Program funded by the US Nuclear Regulatory Commission is investigating chemical and physical conditions for organic ion exchange resins contained in several EPICOR-II prefilters. Those prefilters were used during cleanup of contaminated water from the Three Mile Island Nuclear Power Station after the March 1979 accident. The work was performed by EG G Idaho, Inc. at the Idaho Engineering Laboratory. This is the final report of this task and summarizes results and analyses of three samplings of ion exchange resins from prefilters PF-8 and -20. Results are compared with baseline data from tests performed on unirradiated resins supplied by Epicor, Inc. to determine the extent of degradation due to the high internal radiation dose received by the organic resins. Results also are compared with those of other researchers. 18 refs., 23 figs., 7 tabs.
Download or read book Ion Exchange Resins and Adsorbents in Chemical Processing written by Emmanuel J. Zaganiaris and published by BoD - Books on Demand. This book was released on 2016-08-31 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses various examples on the use of ion exchange in chemical processing, mainly in aqueous systems but also in non-aqueous systems and in gas streams. The theory behind these examples is briefly discussed in order to make the subjects better understood. The focus is on ion exchange rather than on chemical processing, it is therefore addressed to all those working in chemical processing industries or in parallel industries for whom ion exchange is not their primary field of experience.
Download or read book Initial Evaluation of Two Organic Resins and Their Ion Exchange Column Performance for the Recovery of Cesium from Hanford Alkaline Wastes written by Lane A. Bray and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laboratory studies of the radiolytic degradation of amberlite ion exchange resins in water written by C. R. Stuart and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Degradation of SuperLig 644 Ion Exchange Resin written by Stuart T. Arm and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ion Exchange Resins written by Robert Kunin and published by . This book was released on 1950 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ion Exchange Resins written by C. Placek and published by William Andrew. This book was released on 1970 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radioactive Waste Management written by and published by . This book was released on 1981 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Degradation of SuperLig 639 Ion Exchange Resin written by Stuart T. Arm and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery efficency and storage effects of ion exchange resins under laboratory conditions written by and published by Cuvillier Verlag. This book was released on 2014-09-04 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ion exchangers are used for isotope separation in nuclear industry and for purification of water. The advantages of ion exchange technology consist of the possibility to remove highly diluted contaminants and their insensitivity to variations in flow and concentration. Ion exchange resins are chemically active and highly stable in their physical and chemical structure. Due to these specific properties, they will not contaminate products. The main objectives of this study were to determine the background contamination of commercially available ion exchange resins, effective pre-treatment (washing) methods, efficiency of resins in capturing various nutrients applied and the best methods for the storage of the resins. Resin rinsing with 1.0 M NaCl was highly effective, although it did not eliminate the problem of high K+ contamination in the resins. Pre-treatment with 1 M NaCl had no major effect on the absorption behaviour of NO3-. At the 20% saturation level, resin washing and fast flow of the nutrient solution certainly reduces the absorption capacity of the ion exchange resins. However, against our expectations at 80% saturation, the combined effects of washing and slow flow of nutrients increased the sorption capacity of ion exchange resins to a certain extent. The analysis of the leachate solution revealed that NH4+ and NO3- were below detection limit in the leachate solution suggesting the complete absorption of these ions by ion exchange resins irrespective of the applied nutrient concentration. The washing with 1.0 M NaCl solution seems to be the best of our treatments but there are still additional impurities from exchange resins being responsible for excessive recovery rate. Better recovery of nutrients in refrigerator treatments compared to air dry, oven dry and deep freezer recommends that this method is the best storage treatment.
