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Waste Storage (waste + storage)

Distribution by Scientific Domains

Chemistry	60%

Selected Abstracts

Innentitelbild: Neptunium Diverges Sharply from Uranium and Plutonium in Crystalline Borate Matrixes: Insights into the Complex Behavior of the Early Actinides Relevant to Nuclear Waste Storage (Angew. Chem.

ANGEWANDTE CHEMIE, Issue 7 2010
7/2010)
Eine große Sammlung von kristallinen Uran-, Neptunium- und Plutoniumboraten wurde synthetisiert, um zu untersuchen, wie sich das chemische Verhalten dieser benachbarten Elemente unterscheiden könnte. In der Zuschrift auf S.,1285,ff. berichten T.,E. Albrecht-Schmitt et,al. über das höchst ungewöhnliche Verhalten von Neptunium, das mehrere schichtförmige Neptunylborate mit nanoskaligen Strukturen bildet, die Np in den Oxidationsstufen +IV, +V und +VI enthalten. Die Eigenschaften dieser Verbindungen stehen im scharfen Gegensatz zu denen der Uran- und Plutoniumspezies, die lediglich UVI oder PuVI aufweisen. [source]

Neptunium Diverges Sharply from Uranium and Plutonium in Crystalline Borate Matrixes: Insights into the Complex Behavior of the Early Actinides Relevant to Nuclear Waste Storage,

ANGEWANDTE CHEMIE, Issue 7 2010
Shuao Wang
Anders als die anderen: Neptuniumborate unterscheiden sich von Uran- und Plutoniumboraten: Sie liegen als gemischtvalente Verbindungen mit jeweils dreierlei Koordinationsumgebungen und Oxidationstufen vor (siehe Bild; Polyeder: NpIV hellblau, NpV dunkelblau, NpVI grün, B gelb; Kugeln: O rot, K oder Ba blau). [source]

ChemInform Abstract: Neptunium Diverges Sharply from Uranium and Plutonium in Crystalline Borate Matrixes: Insights into the Complex Behavior of the Early Actinides Relevant to Nuclear Waste Storage.

CHEMINFORM, Issue 16 2010
Shuao Wang
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

The challenge of hazardous waste management in a sustainable environment: insights from electronic recovery laws

CORPORATE SOCIAL RESPONSIBILITY AND ENVIRONMENTAL MANAGEMENT, Issue 1 2005
J. Halluite
Abstract New and pending regulations requiring product take-back by manufacturers at the time of disposal are intended to create a new era of industrial ecology and environmental sustainability. However, the intended benefits of the current legislation can be confounded by obsolescence in product design based upon advances in science and technology and also by the introduction of more environmentally benign product designs. Recent changes in legislation are identified and, based upon an extensive industry survey, their resultant likely impacts on consumer electronics are considered. This industry study illustrates that unless the impacted products simultaneously possess both stable designs and input requirements then significant secondary environmental issues related to the waste storage will be encountered. Inherently, these issues cause serious societal problems when hazardous substances are involved , which is the case with many products from the electronics industry. Copyright © 2005 John Wiley & Sons, Ltd and ERP Environment. [source]

Tribute chromite mining and environmental management on the northern Great Dyke of Zimbabwe

NATURAL RESOURCES FORUM, Issue 2 2002
Oliver Maponga
A combination of poor mining methods, waste storage and disposal systems, as well as the day-to-day activities associated with tribute and contract chromite mining are primarily responsible for environmental problems on the Zimbabwe Great Dyke. For instance, the unsystematic dumping of waste rocks in rivers blocks channels and results in flooding, which further sterilizes agricultural land and mineral resources. Erosion of these haphazardly located dumps causes siltation of water bodies and results in the dispersion of heavy metals in soils and watercourses. Vegetation growth on waste dumps is limited and constrained by the high pH levels from phytotoxic metals in soils, the lack of nutrients, poor moisture retention qualities of the mining waste and critical cation imbalances within dumps. This article attributes poor environmental management on the Dyke to poverty, a direct result of the nature of tribute agreements and output prices. Prices based on output targets are exploitative and undervalue labour and thus perpetuate poverty. By absolving claim holders from environmental liability, tribute agreements contribute directly to environmental problems. Thus, the incorporation of enforceable dual environmental responsibility requirements in contract mining agreements is needed to overcome this problem. This article recommends that, to break the poverty cycle, the primary cause of environmental mismanagement in the sector, miners need to be empowered through claim ownership and the enhancement of their capacity to negotiate prices with buyers of chrome. [source]