Download or read book LES MECANISMES DE CORROSION DES VERRES DE CONFINEMENT DES PRODUITS DE FISSION written by Jean-Luc Nogues and published by . This book was released on 1974 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: APRES AVOIR SOULIGNE LA PLACE IMPORTANTE QU'OCCUPE LE VERRE DANS LA SOLIDIFICATION DES DECHETS RADIOACTIFS, ON FAIT LE POINT SUR L'AVANCEMENT ACTUEL DES CONNAISSANCES DANS LE DOMAINE DE LA CORROSION AQUEUSE DES VERRES DE CONFINEMENT DES PRODUITS DE FISSION. PUIS ON ETUDIE L'INFLUENCE DES PRINCIPAUX PARAMETRES SUR L'ALTERABILITE DES VERRES NUCLEAIRES: COMPOSITION DU VERRE, DUREE DE LIXIVIATION, TEMPERATURE ET MODE DE LIXIVIATION. MISE EN EVIDENCE DES MECANISMES PRINCIPAUX QUI REGISSENT LA CORROSION DE CES MATERIAUX

Download or read book Energy Waste and the Environment written by R. Gieré and published by Geological Society of London. This book was released on 2004 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides incentives for further development of sustainable fuel cycles through a novel and interdisciplinary approach to an Earth science-related topic. The main focus is on geochemical concepts in immobilizing, isolating or neutralizing waste derived from energy production and consumption. The book also addresses the issue of using some types of energy-derived waste as alternative raw materials. Moreover, it highlights research on how certain wastes can be used for energy production, an increasingly important aspect of modern integrated waste management strategies. The main objectives are to: (a) identify the most serious environmental problems related to various types of power generation and associated waste accumulation; (b) present strategies, based on natural analogue materials, for the immobilization of toxic and radioactive waste components through mineralogical barriers; (c) discuss modern procedures for reuse of waste or certain waste components; and (d) review the importance of geochemical modelling in describing and predicting the interaction between waste and the environment.

Download or read book EHP written by and published by . This book was released on 1993 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Clays and Hydrosilicate Gels in Nuclear Fields written by A. Meunier and published by Elsevier. This book was released on 1992-10-09 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on issues relating to nuclear waste storage plays an important role in contributing to finding good solutions to a problem that concerns mankind's future, predicting the durability of engineered barriers and determining the kinetics of alteration processes. The latter is now one of the vital questions in the scientific community concerned with clay minerals and hydrosilicate gels. The 20 papers published in this volume bring together the experience of specialists on topics such as hydrosilicate gels and early mineral phase crystallization, clay mineral reactions and crystallochemistry of clay minerals. The contributions are of world-wide interest, and will help to stimulate future research and analysis in this field.

Download or read book Biopersistence of Respirable Synthetic Fibers and Minerals written by and published by . This book was released on 1994 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Waste Research written by Arnold P. Lattefer and published by Nova Publishers. This book was released on 2008 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radioactive wastes are waste types containing radioactive chemical elements that do not have a practical purpose. They are sometimes the products of a nuclear processes, such as nuclear fission. However, other industries not directly connected to the nuclear industry can produce large quantities of radioactive waste. For instance, over the past 20 years it is estimated that just the oil-producing endeavours of the US have accumulated 8 million tons of radioactive wastes. The majority of radioactive waste is "low-level waste", meaning it has low levels of radioactivity per mass or volume. This type of waste often consists of used protective clothing, which is only slightly contaminated but still dangerous in case of radioactive contamination of a human body through ingestion, inhalation, absorption, or injection. The issue of disposal methods for nuclear waste was one of the most pressing current problems the international nuclear industry faced when trying to establish a long term energy production plan, yet there was hope it could be safely solved. In the U.S., the DOE acknowledged much progress in addressing the waste problems of the industry, and successful remediation of some contaminated sites, yet also major uncertainties and sometimes complications and setbacks in handling the issue properly, cost effectively, and in the projected time frame. In other countries with lower ability or will to maintain environmental integrity the issue would be more problematic. This new book presents the latest research in the field.

Download or read book Advances in Transport Phenomena written by Liqiu Wang and published by Springer Science & Business Media. This book was released on 2009-10-15 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term transport phenomena is used to describe processes in which mass, momentum, energy and entropy move about in matter. Advances in Transport Phenomena provide state-of-the-art expositions of major advances by theoretical, numerical and experimental studies from a molecular, microscopic, mesoscopic, macroscopic or megascopic point of view across the spectrum of transport p- nomena, from scientific enquiries to practical applications. The annual review series intends to fill the information gap between regularly published journals and university-level textbooks by providing in-depth review articles over a broader scope than in journals. The authoritative articles, contributed by international- leading scientists and practitioners, establish the state of the art, disseminate the latest research discoveries, serve as a central source of reference for fundamentals and applications of transport phenomena, and provide potential textbooks to senior undergraduate and graduate students. The series covers mass transfer, fluid mechanics, heat transfer and thermo- namics. The 2009 volume contains the four articles on biomedical, environmental and nanoscale transports. The editorial board expresses its appreciation to the c- tributing authors and reviewers who have maintained the standard associated with Advances in Transport Phenomena. We also would like to acknowledge the efforts of the staff at Springer who have made the professional and attractive pr- entation of the volume. Serial Editorial Board Editor-in-Chief Professor L. Q. Wang The University of Hong Kong, Hong Kong; lqwang@hku. hk Editors Professor A. R. Balakrishnan Indian Institute of Technology Madras, India Professor A.

Download or read book Symposium written by Ian G. MacKinley and published by . This book was released on 1998 with total page 1168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific Basis for Nuclear Waste Management VIII written by Carol M. Jantzen and published by . This book was released on 1985 with total page 1022 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of XVII International Congress on Glass written by and published by . This book was released on 1995 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 8th International Conference on Radioactive Waste Management and Environmental Remediation written by Anibal Taboas and published by . This book was released on 2002 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Geological Disposal of High Level Radioactive Wastes written by Douglas G. Brookins and published by . This book was released on 1987 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific Basis for Nuclear Waste Management XXI written by Ian G. McKinley and published by . This book was released on 1998 with total page 1168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Testing and Evaluation of Solidified High Level Radioactive Waste written by A. R. Hall and published by . This book was released on 1987 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence de la corrosion du fer sur les processus d alt ration du verre written by Charly Carrière and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: La gestion des déchets produits par l'industrie nucléaire est un enjeu majeur de nos sociétés. En France, l'Agence nationale pour la gestion des déchets radioactifs (Andra), est chargée de la mise en œuvre du projet Cigéo, centre industriel de stockage géologique, un concept de stockage profond en milieu argileux des déchets radioactifs HA et MAVL. Dans ce concept, le verre a été choisi comme matrice de confinement pour les déchets radioactifs de haute activité et la prédiction du comportement du colis de déchet sur le long terme est l'un des éléments essentiels de sureté. Afin d'identifier les mécanismes d'altération du verre en présence de fer issu du conteneur de stockage, différents systèmes verre/fer/argilite ont été altérés dans des conditions proches du probable site de stockage géologique. Un couplage de techniques de caractérisation post-mortem de l'échelle micro à nanométrique a permis de caractériser les systèmes et d'identifier les silicates de fer qui se forment dans la couche d'altération du verre SON68 et dans les produits de corrosion du fer. A 50°C, les smectites dioctaédriques de FeIII (assimilées à de la nontronite) se forment préférentiellement, tandis que des serpentines trioctaédriques riches en FeII (greenalite, berthierine) ne sont détectées que pour une température de 90°C. Ces phyllosilicates nanométriques ont un impact macroscopique sur l'altération du verre nucléaire. En effet les interactions silicium/fer entretiennent l'altération du verre et retardent l'atteinte du régime d'altération en vitesse résiduelle.

Download or read book INIS Atomindex written by and published by . This book was released on 1985 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tra age isotopique 29Si et 18 O des m canismes de l alt ration du verre de confinement des d chets nucl aires written by Nathalie Valle and published by . This book was released on 2000 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette étude se propose de compléter la compréhension des mécanismes de corrosion en phase aqueuse des verres de confinement des déchets radioactifs par traçage isotopique de la solution altérante. Des verres « type SON68 », chacun dopé avec une terre rare différente (La, Ce ou Nd), ont été altérés simultanément par une solution enrichie en 29Si et 18 O sur une période de 20 mois. Un tel traçage isotopique permet (i) de suivre les échanges réels entre verre et solution altérante et (ii) de comprendre les réactions mettant en jeu l’oxygène et le silicium au cours de l’altération. Pour ce faire, les solutions ont été analysées par ICP-MS et –AES et des profils en profondeur ont été réalisés sur les verres altérés par microsonde ionique. L’analyse élémentaire des pellicules d’altération a permis d’établir la distribution des éléments dans les deux couches constitutives du verre altéré : phyllosilicates et gel et, démontrent que celles-ci retiennent différemment les éléments. L’analyse isotopique des pellicules d’altération, couplée à celle des lixiviats, permet de distinguer par leurs signatures isotopiques différentes, les phyllosilicates et le gel, et, de mettre en évidence deux mécanismes de formation distincts. Les phyllosilicates croissent à la surface des verres par précipitation. Le gel, quant à lui, se formerait par une succesion de réactions d’hydrolyse/condensation se produisant préférentiellement à l’interface réactionnelle. Il serait produit par réarrangement in-situ d’espèces hydratées sans équilibre avec la solution entière. De plus, le développement d’un protocole expérimental a permis de suivre le transfert de silicium de la solution dans des gels d’altération sous gradient isotopique. La modélisation des profils de diffusion, obtenus à la sonde ionique, a permis d’accéer aux coefficients de diffusion apparents du silicium (Dsi) dans les gels. Nos expériences ont ainsi permis de quantifier l’influence du mode d’altération (dynamique ou statique) et celle de la composition de la solution altérante sur les Dsi