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Testing Of Novel Inorganic Ion Exchangers For The Removal Of Radiocobalt From Npp Waste Effluents
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Book Synopsis Testing of Novel Inorganic Ion Exchangers for the Removal of Radiocobalt from NPP Waste Effluents by :
Download or read book Testing of Novel Inorganic Ion Exchangers for the Removal of Radiocobalt from NPP Waste Effluents written by and published by . This book was released on 2002 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: New antimonysilicate (SbSi) ion exchanger is being developed for industrial use. Tentative screening tests using simulated waste liquids have indicated that this material can remove most key radionuclides such as 6°Co, 9°Sr and 137Cs in much broader pH-range than existing commercial materials. As a part of the development program, the material is being tested for the removal of 6°Co from real nuclear power plant waste waters. In this context, test with small-scale laboratory columns (bed volume 0.5 mL) have been carried out using a Floor Drain water samples from Ginna NPP and Diablo Canyon NPP, USA. More than 90% of 6°Co in these liquids was removable by mechanical filtration (0.45 [mu]m). SbSi columns removed more than 90% of the soluble 6°Co that was left in the solutions after filtration. The tests were discontinued when about 2000 bed volumes were treated due to depletion of test liquids with no sign of column exhaustion.
Book Synopsis Use of Novel Highly Selective Ion Exchange Media for Minimizing the Waste Arising from Different NPP and Other Liquids by : Esko Tusa
Download or read book Use of Novel Highly Selective Ion Exchange Media for Minimizing the Waste Arising from Different NPP and Other Liquids written by Esko Tusa and published by . This book was released on 2003 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highly selective inorganic ion exchangers give new possibilities to implement and operate new innovative treatment systems for radioactive liquids. Because of high selectivity these ion exchangers can be used even in liquids of high salt concentrations. Only selected target nuclides will be separated and inactive salts are left in the liquid, which can be released or recategorized. Thus, it is possible to reduce the volume of radioactive waste dramatically. On the other hand, only a small volume of highly selective material is required in applications, which makes it possible to design totally new types of compact treatment systems. The major benefit of selective ion exchange media comes from the very large volume reduction of radioactive waste in final disposal. It is also possible to save in investment costs, because small ion exchanger volumes can be used and handled in a very small facility. This paper describes different applications of these highly selective ion exchangers, both commercial fullscale applications and laboratory tests, to give the idea of their efficiency for different liquids.
Book Synopsis Nuclear Waste Treatment Using Novel Inorganic Ion Exchange Materials by : Lina Al-Hindi Al-Attar
Download or read book Nuclear Waste Treatment Using Novel Inorganic Ion Exchange Materials written by Lina Al-Hindi Al-Attar and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book דער אדעסער פאלעסטינא-קאמיטעט written by and published by . This book was released on 1908 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development and Testing of Ion Exchangers for Treatment of Liquid Wastes at Oak Ridge National Laboratory by :
Download or read book Development and Testing of Ion Exchangers for Treatment of Liquid Wastes at Oak Ridge National Laboratory written by and published by . This book was released on 1993 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report addresses three areas of waste treatment: (1) treatment of newly generated low-level liquid waste and Melton Valley Storage Tank (MVST) supernate using inorganic ion exchangers; (2) treatment of processing streams at the Radiochemical Engineering Development Center (REDC); and (3) removal of radionuclides from organic solutions. Distribution of various radionuclides between simulated waste solutions and several sorbents was determined in batch tests. Inorganic ion exchangers were prepared in the form of microspheres by an intemal gelation process. Microspheres of hydrous titania, hydrous zirconia, hydrous titania containing embedded sodium cobalt hexacyanoferrate, and the corresponding phosphate forms of these materials were prepared. Several zeolites (PDZ-140, PDZ-300, EE-96, CBV-10A) and inorganic ion exchangers (hydrous titania, hydrous zirconia, polyantimanic acid, sodium cobalt hexacyanoferrate) were tested for the removal of cesium and strontium from the acidic simulated Cleanex raffinate generated at REDC. A resorcinol-based ion-exchange resin and three types of sodium titanate were tested for removal of cesium and strontium from the REDC caustic dissolver solution. Hydrous titania, hydrous zirconia, and their corresponding phosphates were tested for the removal of Eu[sup 3+] from various solutions of di-2-ethylbexyl phosphoric acid (HDEHP) in toluene or dodecane.
Book Synopsis Design, Optimization, and Selectivity of Inorganic Ion-exchangers for Radioactive Waste Remediation by : Dmitry Gennadievich Medvedev
Download or read book Design, Optimization, and Selectivity of Inorganic Ion-exchangers for Radioactive Waste Remediation written by Dmitry Gennadievich Medvedev and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The processes of development of nuclear weapons resulted in accumulation of thousands of curies of high-level radioactive waste. Liquid waste produced in the US has been stored in carbon steel tanks in highly alkaline (1-3 M NaOH, 6 M sodium salts) media for fifty years and leakage has occurred. One of the approaches to the solution of the problem of radioactive waste is to adsorb the nuclides on highly selective ion-exchange material, solidify in a glass matrix and dispose in a geological formation. The use of the ion-exchange technology is limited by the time of the sorbent-solution contact required to reduce the activity of the streams to acceptable levels. Inorganic ion-exchangers are promising materials due to their high radiation stability, extreme selectivity, and compatibility with the glass matrix. The contact time can be reduced by improving selectivities, kinetics, and capacities of the materials towards the target ions. This can be accomplished in part through understanding of the origin of ion-exchange selectivity. Crystalline zeotypes with minerals sitinakite (ideal formula Na2Ti2O3SiO4·2H2O) and pharmacosiderite (HM3(TO)4(GeO4)[subscript]x(SiO4)3[subscript]x M = Cs, Na, K+, T=Nb5+, Ge4+, Ti4+) structures are excellent candidates for selectivity studies because of their ion-exchange properties tunable by alterations of synthetic procedures, and isomorphous framework substitution. The Nb-substitution in titanium sites reduces the framework charge, whereas Ge substitution decreases the unit cell size if in titanium sites and increases if it in silicon sites. The compounds were hydrothermally synthesized in Ti/Si, Ti/Nb/Si, Ti/Ge/Si forms and characterized by structural and ion-exchange studies. The 25% Nb substitution in titanosilicate sitinakite resulted in enhanced selectivity for cesium and additional bond formation of cesium within the channel. The selectivity for cesium in germanium substituted pharmacosiderite also was correlated with the coordination environment within the channel. In the advanced stages of this study semi-crystalline (sodium nonatitanate) and amorphous (monosodium titanate) materials also were considered because of their remarkable strontium selectivity. In situ X-ray diffraction techniques revealed that the sodium nonatitanate precedes the formation of the TS phase in hydrothermal synthesis. This knowledge allowed us to design and synthesize material for combined cesium and strontium removal.
Book Synopsis Inorganic Ion Exchangers for Decontamination of Radioactive Wastes Generated by the Nuclear Power Plants by : Risto Koivula
Download or read book Inorganic Ion Exchangers for Decontamination of Radioactive Wastes Generated by the Nuclear Power Plants written by Risto Koivula and published by . This book was released on 2003 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Inorganic Ion Exchangers for Nuclear Waste Remediation. 1998 Annual Progress Report by :
Download or read book Development of Inorganic Ion Exchangers for Nuclear Waste Remediation. 1998 Annual Progress Report written by and published by . This book was released on 1998 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: To expand the authors efforts to provide families of inorganic ion exchangers useful on a global scale. In carrying out this objective, they will synthesize a variety of ion exchange materials, determine their structures and where necessary alter these structures to build in the desired properties. The underlying thermodynamic, kinetic and molecular basis of ion exchange behavior will be elucidated and their suitability for nuclear waste remediation will be assessed. As of September 1, 1996, they have synthesized a number of highly selective inorganic ion exchangers, determined their crystal structures and elucidated the mechanism of exchange for a number of these exchangers.
Book Synopsis Decommissioning Techniques for Research Reactors by : International Atomic Energy Agency
Download or read book Decommissioning Techniques for Research Reactors written by International Atomic Energy Agency and published by . This book was released on 1994 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first report published by the IAEA which provides guidance on the preparation and implementation of the decommissioning of different types of research reactor. Different construction and operational features of research reactors have a major impact on the decommissioning techniques required. This report offers information on the conclusions drawn from a number of completed projects and identifies their similarities and differences. It is complemented by a computerized research reactor databank. Staff requirements, decommissioning costs waste activity are presented graphically according to reactor thermal power and integrated energy.
Book Synopsis Inorganic Ion Exchange Materials by : Clearfield
Download or read book Inorganic Ion Exchange Materials written by Clearfield and published by CRC Press. This book was released on 2018-02-01 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book extends the frontiers of the ion exchange technologist and highlights new materials for the future.
Download or read book Radiochemical Analysis written by and published by . This book was released on 1964 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Decontamination of Water Cooled Reactors by : International Atomic Energy Agency
Download or read book Decontamination of Water Cooled Reactors written by International Atomic Energy Agency and published by . This book was released on 1994 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication is the first comprehensive review of decontamination processes used throughout the world on water cooled reactors, i.e. PWRs, BWRs, HWRs and WWERs, operating under reduced dose while under maintenance and repair. It focuses on the following objectives: man-sievert reduction, plant life extension, fuel life extension, and general safety and materials reliability. In addition, special attention has been given to full system decontamination which is being developed in response to reactor ageing. Technical isssues such as materials compabitility, waste generation or recontamination after decontamination are also addressed.
Author :Andréa Moura Bernardes Publisher :Springer Science & Business Media ISBN 13 :3642402496 Total Pages :144 pages Book Rating :4.6/5 (424 download)
Book Synopsis Electrodialysis and Water Reuse by : Andréa Moura Bernardes
Download or read book Electrodialysis and Water Reuse written by Andréa Moura Bernardes and published by Springer Science & Business Media. This book was released on 2013-08-30 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents novel techniques to evaluate electrodialysis processes, to synthesize ionic membranes and to characterize their properties. It shows the potential use of membrane process to the treatment of effluents generated in many industrial sectors such as refineries, leather industries, mining and electroplating processes. The book is based on the results obtained by the author's research group during the past decade. It is useful for students, researchers and engineers interested in membrane technologies for water reuse.
Book Synopsis Metal Complexes in Aqueous Solutions by : Arthur E. Martell
Download or read book Metal Complexes in Aqueous Solutions written by Arthur E. Martell and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stability constants are fundamental to understanding the behavior of metal ions in aqueous solution. Such understanding is important in a wide variety of areas, such as metal ions in biology, biomedical applications, metal ions in the environment, extraction metallurgy, food chemistry, and metal ions in many industrial processes. In spite of this importance, it appears that many inorganic chemists have lost an appreciation for the importance of stability constants, and the thermodynamic aspects of complex formation, with attention focused over the last thirty years on newer areas, such as organometallic chemistry. This book is an attempt to show the richness of chemistry that can be revealed by stability constants, when measured as part of an overall strategy aimed at understanding the complexing properties of a particular ligand or metal ion. Thus, for example, there are numerous crystal structures of the Li+ ion with crown ethers. What do these indicate to us about the chemistry of Li+ with crown ethers? In fact, most of these crystal structures are in a sense misleading, in that the Li+ ion forms no complexes, or at best very weak complexes, with familiar crown ethers such as l2-crown-4, in any known solvent. Thus, without the stability constants, our understanding of the chemistry of a metal ion with any particular ligand must be regarded as incomplete. In this book we attempt to show how stability constants can reveal factors in ligand design which could not readily be deduced from any other physical technique.
Book Synopsis The Principles of Radioactive Waste Management by : International Atomic Energy Agency
Download or read book The Principles of Radioactive Waste Management written by International Atomic Energy Agency and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encompasses all aspects of radioactive waste management from waste minimization to disposal and sets out objectives and principles for the protection of human health and the environment, present and future. (Please note: this publication is superseded by SF-1)
Book Synopsis Fukushima Accident by : Pavel P. Povinec
Download or read book Fukushima Accident written by Pavel P. Povinec and published by Elsevier. This book was released on 2021-07-27 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fukushima Accident: 10 Years After evaluates the post-Fukushima accident situation with up-to-date information, emphasizing radionuclide impacts on the terrestrial and marine environments, and comparing them to the pre-Fukushima accident levels of radionuclides in the environment. This is based on scientific results, as well as knowledge gathered from literature to provide current information on the present status, summarize 10 years of data on the Fukushima accident, and describe the present situation in the local, regional, and global time and space scales. It provides data on radioactivity released into the atmosphere and the ocean, the distribution of radionuclides in the world atmosphere and oceans, and their impact on the total environment, including assessments of radiation doses in Japanese and world populations from consumption of terrestrial food and seafood. It goes on to describe future aspects of the radioactive contamination of these environments and the health implications. This book informs environmental scientists, academics, and researchers in environmental science and nuclear energy as well as postgraduate students in the field of environmental science, radioactivity, and nuclear energy, on the present situation of radioactive contamination of Japan and in the world. Covers the Fukushima radioactivity impact on humans and the environment from the accident to the present Provides full information on radiation doses to Japanese citizens and biota, as well as to the world population, 10 years after the Fukushima accident Details transport of radionuclides in terrestrial and ocean environments, describing how to apply this information to ocean global circulation models and quantify radionuclide contamination of coastal regions Assesses future trends in radioactive contamination of the Fukushima site
Book Synopsis Sol-Gel Methods for Materials Processing by : Yuriy L. Zub
Download or read book Sol-Gel Methods for Materials Processing written by Yuriy L. Zub and published by Springer Science & Business Media. This book was released on 2008-07-01 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sol-gel processing is a soft-chemistry method to obtain functional materials at low temperatures. This route can be used to produce very sophisticated nanomaterials and to tailor the materials to very specific applications. Adsorption and detection of pollutants, water purification and soil remediation represent challenging fields of application that can be exploited by sol-gel materials. In this volume several contributions from invited speakers and participants at the NATO advanced research workshop on "Sol-gel approaches to materials for pollution control, water purification and soil remediation", which has been held in Kiev, Ukraine on October 2007, are reported. The book offers a wide and updated overview of the most advanced sol-gel methods for materials processing and at the same time presents several case studies concerning possible solutions for environmental issues. General articles on sol-gel from the invited speakers and focused research articles allow getting inside sol-gel applications on this very important field.
