Download or read book Small Column Ion Exchange Testing of Superlig 644 for Removal of 137Cs from Hanford Tank Waste Envelope C Tank 241 AN 107 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The current BNFL Inc. flowsheet for the pretreatment of the Hanford high-level tank wastes includes the use of Superlig[reg-sign] materials for removing[sup 137]Cs from the aqueous fraction of the waste. The Superlig materials applicable to cesium removal include the cesium-selective Superlig 632and Superlig 644. These materials have been developed and supplied by IBC Advanced Technologies, Inc., American Fork, Utah. This report describes the testing of the Superlig 644 ion exchange material in a small dual-column system. The bed volume of the lead column was 18.6 mL (L/D= 7), and the bed volume of the lag column was 15.9 mL (L/D= 6) during the loading phase. The sample processed was approximately 1.6 L of diluted waste ([Na[sup+]]= 4.84 M) from Tank 241-AN-107 (Envelope C). This sample had been previously treated for removal of Sr/transuranic (TRU) values and clarified in a single tube cross-flow filtration unit. All ion exchange process steps were tested, including resin-bed preparation, loading, feed displacement, water rinse, elution, eluant rinse, and resin regeneration. A summary of performance measures for both columns is shown in Table S1. The Cs[lambda] values represent a measure of the effective capacity of the SL-644 resin. The Cs[lambda] of 20 for the lead column is much lower than the estimated 150 obtained by the Savannah River Technology Center during Phase 1A testing. Equilibrium data obtained with batch contacts using the AN-107 Cs IX feed predicts a Cs[lambda] of 183. A Cs[lambda] for the lag column could not be determined due to insufficient breakthrough, but it appeared to work well and removed nearly all of the cesium not removed by the lead column. The low value for the lead column indicates that it did not perform as expected. This may have been due to air or gas in the bed that caused fluid channeling or blinding of the resin. The maximum decontamination factor (DF) for[sup 137]Cs listed in Table S1 is based on[sup 137]Cs concentration in the first samples collected from each column and the[sup 137]Cs concentration in the feed. The composite DF for[sup 137]Cs was 1,760, which provided an effluent with a[sup 137]Cs concentration of 8.7E-02 Ci/m[sup 3]. The[sup 137]Cs concentration is below the basis of design limit and is 7.2% of the contract limit for[sup 137]Cs.
Download or read book Small Column Ion Exchange Testing of SuperLig 644 for Removing 137 Cs from Hanford Waste Tank 241 AN 102 Supernate Envelope C Mixed with Tank 241 C 104 Solids Envelope D Wash and Permeate Solutions written by Sandra K. Fiskum 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 Small Column Ion Exchange Testing of SuperLig 644 for Removal of 137 Cs from Hanford Waste Tank 241 AZ 101 Envelope B written by Sandra K. Fiskum 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 Engineering Separations Unit Operations for Nuclear Processing written by Reid Peterson and published by CRC Press. This book was released on 2019-11-15 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineering Separations Unit Operations for Nuclear Processing provides insight into the fundamentals of separations in nuclear materials processing not covered in typical texts. This book integrates fuel cycle and waste processing into a single, coherent approach, demonstrating that the principles from one field can and should be applied to the other. It provides historical perspectives on nuclear materials processing, current assessment and challenges, and how past challenges were overcome. It also provides understanding of the engineering principles associated with handling nuclear materials. This book is aimed at researchers, graduate students, and professionals in the fields of chemical engineering, mechanical engineering, nuclear engineering, and materials engineering.
Download or read book Multiple Ion Exchange Column Tests for Technetium Removal from Hanford Tank Waste Supernate written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Five cycles of loading, elution, and regeneration were performed to remove technetium from a Hanford waste sample retrieved from Tank 241-AW-101 using SuperLig 639 resin. The waste sample was diluted to 4.95 M Na plus and then was processed to remove 137Cs through dual ion exchange columns each containing 15 mL of SuperLig 644. To remove 99Tc, the cesium decontaminated solution was processed downwards through two ion exchange columns, each containing 12 mL of SuperLig 639 resin. The columns, designated as lead and lag, each had an inside diameter of 1.45 cm and a height of 30 cm. The columns were loaded in series, but were eluted and then regenerated separately. The average technetium loading for the cycles was 250 BV at 10 percent breakthrough. There was no significant difference in the loading performances among the five cycles. The percent removal of 99Tc was greater than 99.94 percent and the average decontamination factor (DF) was approximately 1.7 x 103. Approximately 99 percent of the 99Tc loaded on the resin was eluted with less than 15 BV of de-ionized water at 65 degrees C.
Download or read book Small Column Testing of SuperLig 639 for Removing 99Tc from Hanford Tank 241 AN 102 Supernate Envelope C Mixed with Tank 241 C 104 Solids Envelope D Wash and Permeate Solutions written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Small Column Testing of SuperLig 639 for Removing 99Tc from Hanford Tank Waste Envelope A Tnak 241 AW 101 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: No abstract prepared.
Download or read book Small Column Testing of SuperLig 639 for Removing 99Tc from Hanford Tank Waste 241 AN 102 Supernate Envelope C Mixed with Tank 241 C 104 Solids Envelope D Wash and Permeate Solutions written by Ingrid E. Burgeson and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Spent Ion Exchange Media written by and published by . This book was released on 2000 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current BNFL Inc. flowsheet for the pretreatment of the Hanford High-Level tank wastes includes the use of Superlig{reg_sign} materials for the removal of 137Cs and 99Tc from the aqueous fraction of the waste. The cesium-selective Superlig{reg_sign} 644 (SL-644) and the technetium-selective Superlig{reg_sign} 639 (SL-639) have been evaluated in tests with actual waste samples. These materials have a finite processing lifetime in the plant and will need to be disposed of. The composition and level of residual radionuclide contamination is important for assessing various disposal pathways for the Superlig{reg_sign} materials. This report contains the results of analyses of subsamples of the SL-639 and SL 644 materials that have been used in small column testing of actual waste samples at the Radiochemical Processing Laboratory. The wastes that have been tested include samples from Tanks 241-AW-101 and 241-AN-107. The analyses of the spent resins include inductively coupled plasma/atomic emission spectrometry (ICP-AES) for metals, cold vapor atomic absorption (CVAA) spectroscopy for mercury, gamma energy analysis (GEA) for radionuclides and inductively coupled plasma/mass spectrometry (ICP-MS) for selected metals and radionuclides. While these results provide an indication of the analyte concentrations that may be left on the spent resin, they do not fully represent the concentrations that may be found after extended plant processing with additional load/elute cycles and different waste compositions. BNFL estimates that the SL-644 may last for 100 load/elute cycles with Envelope A and C wastes and 20 cycles with Envelope B wastes. The number of useable load/elute cycles for the SL-639 is not well defined, but is likely on the order of hundreds.
Download or read book Small Column Testing of SuperLig 639 for Removing 99Tc from Hanford Tank Waste Envelope B Tank 241 AZ 101 written by Ingrid E. Burgeson and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluating Residence Time for SuperLig R 644 Columns with Simulated LAW Envelope B Solution written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hanford River Protection Project Waste Treatment Plant (RPP-WTP) will be performing cesium and technetium ion exchange using SuperLig 644 and 639, respectively. Earlier work with LAW Envelope A (AN-105) simulant indicated that cesium adsorption by SuperLig 644 and perrhenate (pertechnetate analog) adsorption by SuperLig 639 are dependent on liquid volumetric flow rate during column loading. Acceptable lead column operation for both resins was attained (50 percent breakthrough at 100 column volumes) at maximum RPP-WTP design basis superficial velocities, but these results indicate that sorption kinetics could be limiting. As a follow-up to this previous work, LAW Envelope B (AZ-102) simulant was tested to verify column operability within the design basis. The simulant mimics the composition of low-activity waste solution from Tank 241-AZ-102 supernate in the Hanford waste tanks, which has higher cesium concentration than Envelopes A and C.
Download or read book Attestation des bonne vie moeurs bon exemple des religieuses de Saincte Claire de la ville du Puy de leur confesseur faite par les personnes les plus qualifiez de ladite ville contre les mauvais bruits qu en a fait courir secrettement Monsieur l v que du Puy written by and published by . This book was released on 1654 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technetium Removal Column Flow Testing with Alkaline High Salt Radioactive Tank Waste written by David L. Blanchard (Jr.) 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 Ion Exchange Technologies written by Ayben Kilislioglu and published by BoD – Books on Demand. This book was released on 2012-11-07 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains information about the technological development of ion exchange in their application for industrial processes. Widely used and well known fields of ion exchange like chromatography and electromembrane technology are described in this book with experimental details. Designing new materials for nanotechnology and nanomaterials as ion exchanger are also explained by experimental proofs. Ion exchange book is suitable not only for postgraduate students but also for researchers in chemistry, biochemistry and chemical technology.
Download or read book The 1996 Baseline Environmental Management Report Report written by 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 Capital Programming Guide written by United States. Office of Management and Budget and published by . This book was released on 1997 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Science and Technology for Disposal of Radioactive Tank Wastes written by Wallace W. Shulz and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radioactive wastes resulting from over 40 years of production of nuclear weapons in the U. S. are currently stored in 273 underground tanks at the U. S. Department of Energy Hanford site, Idaho National Engineering and Environmental Laboratory, Oak Ridge Reservation, and Savannah River site. Combined, tanks at these sjtes contain approximately 94,000,000 gallons of waste in a variety of forms including liquid, concrete-like salt cake, and various sludges. More than 730,000,000 curies of several radioactive isotopes are present in the underground tanks. Certainly, one of the greatest challenges facing the U. S. Department of Energy is how to characterize, retrieve, treat, and immobilize the great variety of tank wastes in a safe, timely, and cost-effective manner. For several years now, the U. S. Department of Energy has initiated and sponsored scientific and engineering studies, tests, and demonstrations to develop the myriad of technologies required to dispose of the radioactive tank wastes. In recent times, much of the Department of Energy R&D activities concerning tank wastes have been closely coordinated and organized through the Tanks Focus Area (IF A); responsibility for technical operations of the TF A has been assigned to the Pacific Northwest National Laboratory.
