Download or read book Evaluation of Ion Exchange Materials in K Basin Floor Sludge and Potential Solvents for PCB Extraction from Ion Exchange Materials written by and published by . This book was released on 1999 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approximately 73 m3 of heterogeneous solid material, ''sludge, '' (upper bound estimate, Packer 1997) have accumulated at the bottom of the K Basins in the 100 K Area of the Hanford Site. This sludge is a mixture of spent fuel element corrosion products, ion exchange materials (organic and inorganic), graphite-based gasket materials, iron and aluminum metal corrosion products, sand, and debris (Makenas et al. 1996, 1997). In addition, small amounts of polychlorinated biphenyls (PCBs) have been found. These small amounts are significant from a regulatory standpoint. Ultimately, it is planned to transfer the K Basins sludge to the Hanford double shell tanks (DSTs). Chemical pretreatment is required to address criticality issues and the destruction or removal of PCBs before the K Basin sludge can be transferred to the DSTs. Eleven technologies have been evaluated (Papp 1997) as potential pretreatment methods. Based on the evaluations and engineering studies and limited testing, Fluor Daniel Hanford recommended solvent washing of the K Basin sludge, followed by nitric acid dissolution and, potentially, peroxide addition (FDH 1997). The solvent washing (extraction) and peroxide addition would be used to facilitate PCB removal and destruction. Following solvent extraction, the PCBs could be distilled and concentrated for disposal as a low-level waste. The purpose of the work reported here was to continue investigating solvent extraction, first by better identifying the ion exchange materials in the actual sludge samples and then evaluating various solvents for removing the PCBs or possibly dissolving the resins. This report documents some of the process knowledge on ion exchange materials used and spilled in the K Basins and describes the materials identified from wet sieving KE Basin floor and canister sludge and the results of other analyses. Several photographs are included to compare materials and illustrate material behavior. A summary of previous tests on solvent extraction of PCB surrogates from simulant K Basin sludge is also given.
Download or read book Evaluation of Ion Exchange Materials in K Basin Floor Sludge and Potential Solvents for PCB Extraction from Ion Exhange Materials written by Andrew J. Schmidt and published by . This book was released on 1998 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaulation of Ion Exchange Materials in K Basin Floor Sludge and Potential Solvents for PCB Extractions from Ion Exchange Materials written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: There is no discription available for this report at this time.
Download or read book Ion Exchange and Solvent Extraction written by Yitzhak Marcus and published by CRC Press. This book was released on 2004-07-23 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 17 in the Ion Exchange and Solvent Extraction series represents the vanguard of research on solvent extraction. It covers the principles of electrolyte extraction and other subjects of increasing interest to the field. This volume begins with pharmaceutical applications of supercritical fluid solvents, particularly supercritical carbon dioxide. It also contains chapters on liquid ion exchangers and relevant experiment protocols, SCF applications in drug formulation and pollution reduction, exploiting SCF as reaction media, applications of metal bis(dicarbollide) in analytical chemistry and radioactive waste treatment, and synergistic extraction of metal ions. Volume 17 discusses the ion exchange isothermal supersaturation technique, metal separation via pH-induced parametric pumping, modeling of ion exchange kinetics for ultrapure water, and the engineering of activated carbons and carbonaceous materials for removal of metal ions and organic micropollutants in water. Volume 17 cover topics that include supercritical fluid applications, applications of metal bis(dicarbollide), and synergistic extraction of metal ions.
Download or read book Ion Exchange and Solvent Extraction written by Arup K. SenGupta and published by CRC Press. This book was released on 2001-04-03 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text introduces a special class of polymeric ligand exchanger (PLE) with high affinities for anionic ligands. Volume 14 discusses the potential and advantages of micro- and nanofiltration membrane processes for removal of metals; details prevailing equilibrium relationships and supporting experimental data for systems where leaching and ion exchange take place simultaneously; covers cases of uranium cation and gold cyanide anion bisorption and modelling of engineered systems.
Download or read book Ion Exchange and Solvent Extraction written by Arup K. Sengupta and published by CRC Press. This book was released on 2019-08-30 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alternating the focus of the series each year, the new volume in the Ion Exchange and Solvent Extraction series represents the vanguard of research in ion exchange. Ion Exchange and Solvent Extraction: A Series of Advances, Volume 18 reflects the remarkable breadth of applications inspiring the latest advances, featuring carefully selected contributors in areas including catalysis, molecular imprinting, drug delivery, nanotechnology, green processes, water treatment, and pollution control. The book explores the properties of resins, synthetic polymers, and naturally occurring materials that exhibit ion exchange properties. It explains their role in synthesis reactions with experimental evidence, examples of reactions, and models. The book also provides useful data, calculations, modeling approaches, process variables, and design aspects to consider for a variety of novel applications. Ion Exchange and Solvent Extraction: A Series of Advances, Volume 18 offers an updated perspective on the current and potential capabilities of ion exchange materials in today's most cutting-edge applications.
Download or read book Ion Exchange and Solvent Extraction written by Arup K. Sengupta and published by CRC Press. This book was released on 2017-07-12 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the Second World War, the field of ion exchange has taken a dominant role in offering solutions to many problems in the developed and developing world. It has evolved to a wide array of applications, including mining, microelectronics, drug delivery and detection, food, fertilizers, chemical cleaning, catalysis, bioseparation, water management, environmental research and practices, and energy. The six chapters in this book represent diverse contributions from researchers around the globe who are making noticeable strides in the field in currently important areas: Brackish water desalination Removing boron from water Sustainable approaches for synthesizing commercially important epoxide building blocks Solid-phase heavy-metal separation Separating concentrated ion mixtures in sorption columns Sensing toxic metals Ion Exchange and Solvent Extraction: A Series of Advances, Volume 22 provides a focused review of new materials and new processes that have developed and are rapidly growing. It describes cutting-edge research and practices in the use of ion exchange for building a cleaner, sustainable world and provides thoughtful insights on what ion exchange may do for us in the future.
Download or read book Ion Exchange and Solvent Extraction written by Arup K. SenGupta and published by CRC Press. This book was released on 2016-04-19 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past four decades, notable advancements in the theory and application of ion exchange science uncovered a wealth of knowledge that fueled new scientific pursuits and created synergies with myriad scientific endeavors. Today, pioneers continue to break new ground by synthesizing novel materials and merging the interdisciplinary fields of sc
Download or read book Distribution of Components in Ion Exchange Materials Taken from the K East Basin and Leaching of Ion Exchange Materials by Nitric written by and published by . This book was released on 1999 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laboratory tests were performed to examine the efficacy of mixed nitric/hydrofluoric acid followed by mixed nitric/oxalic acid leach treatments to decontaminate ion exchange materials that have been found in a number of samples retrieved from K East (KE)Basin sludge. The ion exchange materials contain organic ion exchange resins and zeolite inorganic ion exchange material. Based on process records, the ion exchange resins found in the K Basins is a mixed-bed, strong acid/strong base material marketed as Purolite NRW-037. The zeolite material is Zeolon-900, a granular material composed of the mineral mordenite. Radionuclides sorbed or associated with the ion exchange material can restrict its disposal to the Environmental Restoration Disposal Facility (ERDF). The need for testing to support development of a treatment process for K Basin sludge has been described in Section 4.2 of ''Testing Strategy to Support the Development of K Basins Sludge Treatment Process'' (Flament 1998). Elutriation and washing steps are designed to remove the organic resins from the K Basin sludge. To help understand the effects of the anticipated separation steps, tests were performed with well-rinsed ion exchange (IX) material from KE Basin floor sludge (sample H-08 BEAD G) and with well-rinsed IX having small quantities of added KE canister composite sludge (sample KECOMP). Tests also were performed to determine the relative quantities of organic and inorganic IX materials present in the H-08 K Basin sludge material. Based on chemical analyses of the separated fractions, the rinsed and dry IX material H-08 BEAD G was found to contain 36 weight percent inorganic material (primarily zeolite). The as-received (unrinsed) and dried H-08 material was estimated to contain 45 weight percent inorganic material.
Download or read book Ion Exchange and Solvent Extraction written by Arup K. SenGupta and published by CRC Press. This book was released on 2004-03-01 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the sustained and diverse experimental momentum in the field of ion exchange, Volume 16 summarizes revolutionary advances on par with the consistently high-level research related by this series. This text discusses the kinetics, theoretical models, experimental results/supporting data, and applications for isothermal supersaturation, met
Download or read book Ion Exchange and Solvent Extraction written by Jacob a Marinsky and published by CRC Press. This book was released on 2019-08-30 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Ion Exchange and Solvent Extraction series treats ion exchange and solvent extraction both as discrete topics and as a unified, multidisciplinary study - presenting new insights for researchers in many chemical and related field. Containing current knowledge and results in ion exchange, this text: presents an overview of the chemical thermodynamics of cation-exchange reactions, with particular emphasis placed on liquid-phase- and solid-phase-activity coefficient models; describes the development of surface complexation theory and its application to the ion exchange phenomenon; discusses metal-natural colloid surface reactions and their consideration by surface complexation modelling complements; and covers the influence of humic substances on the uptake of metal ions by naturally occurring materials.
Download or read book Ion Exchange and Solvent Extraction written by Jacob A. Marinsky and published by CRC Press. This book was released on 2021-06-30 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Ion Exchange and Solvent Extraction series treats ion exchange and solvent extraction both as discrete topics and as a unified, multidisciplinary study - presenting new insights for researchers in many chemical and related fields.;Volume 12 contains coverage of: the nature of metal-ion interaction with oppositely charged sites of ion exchangers; high-pressure ion exchange separation of rare earth elements; the commercial recovery of valuable minerals from seawater and brines by ion exchange and sorption; the kinetics of ion exchange in heterogenous systems; the ion-exchange equilibria of amino acids; and more.;The work is intended for analytical, co-ordination, process, separation, surface, organic, inorganic, physical and environmental chemists, geochemists, electrochemists, radiochemists, biochemists, biophysicists, hydrometallurgists, membrane researchers and chemical engineers.
Download or read book Ion Exchange and Solvent Extraction written by Bruce A. Moyer and published by CRC Press. This book was released on 2009-08-19 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growth in the world's nuclear industry, motivated by peaking world oil supplies, concerns about the greenhouse effect, and domestic needs for energy independence, has resulted in a heightened focus on the need for next-generation nuclear fuel-cycle technologies. Ion Exchange and Solvent Extraction: A Series of Advances, Volume 19 provides a com
Download or read book Evaluation of an Ion Exchange Resin Method to Estimate Nitrate Leaching Losses in Sandy Soils written by E. Jonathan Jackson and published by . This book was released on 1987 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heavy Metals Removal from Oil Sludge Using Ion Exchange Textiles written by Ziyad Muslat and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this research, ion exchange textiles were used for the first time for the removal of heavy metals from oil sludge. The target metals which were tested for their removal are cadmium, vanadium, nickel, copper, zinc, and iron. Ion exchange textiles were applied directly to oil sludge to assess the performance of ion exchange process in oil sludge without using a pre-treatment stage. Then, two different pre-treatments methods were developed to enhance ion exchange in oil sludge; first pretreatment method included pretreatment of oil sludge with organic solvent. The second pretreatment method used pretreatment with aqueous solution (solvent extraction) before applying ion exchange textiles. Results showed that all metals responded positively to pre-treatment with acetone. Using this technique, vanadium was removed from oil sludge below detection limit; other metals such as cadmium, zinc, nickel, iron, and copper was removed at 99%, 96%, 94%, 92%, and 89% respectively. The process developed by this work, provides a new economic technology for the treatment of oil sludge with regard to heavy metals removal.
Download or read book Ion Exchange and Solvent Extraction written by Jacob A. Marinsky and published by . This book was released on 1973 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt:
