Review Of Selenium Thermodynamic Data
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Review Of Selenium Thermodynamic Data
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Author : C. E. Cowan
language : en
Publisher:
Release Date : 1988
Review Of Selenium Thermodynamic Data written by C. E. Cowan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Selenosis categories.
Review Of Selenium Thermodynamic Data
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Author :
language : en
Publisher:
Release Date : 1988
Review Of Selenium Thermodynamic Data written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
Chemical Thermodynamics Of Selenium
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Author :
language : en
Publisher: Elsevier
Release Date : 2005-04-16
Chemical Thermodynamics Of Selenium written by and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-04-16 with Technology & Engineering categories.
In order to quantitatively predict the chemical reactions that hazardous materials may undergo in the environment, it is necessary to know the relative stabilities of the compounds and complexes that may be found under certain conditions. This type of calculations may be done using consistent chemical thermodynamic data, such as those contained in this book for inorganic compounds and complexes of selenium. * Fully detailed authoritative critical review of literature.* Integrated into a comprehensive and consistent database for waste management applications.* CD ROM version.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1988
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Aeronautics categories.
Thermodynamics Of Selenium And Tellurium In Molten Metallurgical Slags And Alloys
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Author : Murray Johnston
language : en
Publisher:
Release Date : 2007
Thermodynamics Of Selenium And Tellurium In Molten Metallurgical Slags And Alloys written by Murray Johnston and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Selenium categories.
There are a number of impurity elements present in sulphide ores that can have a deleterious effect on the properties of the final copper metal product. In this thesis, an equilibrium distribution technique was used to determine the thermodynamic behaviour of selenium and tellurium in molten slags used in copper production. Calcium ferrite based slags and copper or silver alloy were equilibrated in magnesia crucibles at temperatures of 1200 to 1400 °C and oxygen partial pressures of 10-11 to 10-0.68 atm. Under conditions typical of those employed during copper converting, the minor elements were found to enter the slag as negatively charged species. The partitioning of selenium and tellurium to the slag was greatest at high temperature, low oxygen partial pressure and at highest concentration of basic oxide (CaO or BaO). The experimentally derived data were combined with published information to calculate the selenide and telluride capacities of the slag, and also to generate fundamental thermodynamic activity data for selenium and tellurium in the slag phase. It was found that the activity coefficients of selenium and tellurium were independent of their concentration in the slag over the range studied, but were strongly dependent on the temperature, slag chemistry and oxidation state of the slag. Experiments were also designed and carried out to determine what effect the presence of iron oxide and its oxidation state has on the behaviour of selenium in the slag. A series of experiments involving iron oxide additions to a calcium aluminate slag was conducted under increasingly oxidising conditions to assess the effect of total iron on the selenide capacity as the dominant oxidation state of iron in the slag changed. It was shown that at a constant ratio of CaO:Al2O3, the selenide capacity increased with total iron in the slag. However, the effect on the selenide capacity did not appear any more significant as the Fe3+:Fe2+ ratio changed in a particular direction. 4 Another series of experiments was carried out with iron calcium silicate slags to determine the stability of phases within the slag, and how this affected the equilibrium distribution and activity coefficient of selenium in the slag. A number of solid phases were identified and their composition determined by scanning electron microscopy, energy dispersive spectroscopy and electron microprobe analysis. The composition and minor element content of the remaining liquid was calculated using a thermodynamic model. From this it was found that the capacity of the liquid slag has a region of independence against slag chemistry, before increasing strongly with increasing lime content to the calcium ferrite composition. Some of the implications of this work are discussed with reference to the practicality of adjusting the process variables in a large-scale industrial process for the purpose of managing minor element content of the molten phases. Considerations include the effect on copper recovery and rate of wear of furnace refractory materials.
Energy Research Abstracts
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Author :
language : en
Publisher:
Release Date : 1988
Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Power resources categories.
Nagra Psi Chemical Thermodynamic Data Base 01 01
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Author : Wolfgang Hummel
language : en
Publisher: Universal-Publishers
Release Date : 2002
Nagra Psi Chemical Thermodynamic Data Base 01 01 written by Wolfgang Hummel and has been published by Universal-Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Science categories.
The Nagra/PSI Chemical Thermodynamic Data Base 01/01 is an encyclopedia of thermodynamic data recommended for environmental studies. The data base focuses on elements commonly found as major solutes in natural waters, and on actinides and fission products relevant for radioactive waste disposal projects. It is the official chemical thermodynamic data base used in Swiss radioactive waste disposal projects. The detailed discussion of every number recommended in this encyclopedia is the result of a multi man-year project of the Paul Scherrer Institut (PSI), a Swiss National Lab. The five authors of this work have many years of experience in research, data base development and the application of thermodynamic data in environmental studies. The data included for many elements are based on their reviews of the basic literature. The data base also includes additional data selected by the authors from recommendations of other experts in ground- water geochemistry and of the international data base project of the Nuclear Energy Agency (NEA).This report is indispensable for every scientist working in the field of environmental studies as the comprehensive source of information on the quality of the thermodynamic data governing particular problems in environmental geochemistry, especially those concerned with the fate of hazardous substances. This enables graduate students, researchers and consultants, as well as regulators and reviewers of scientific papers to assess the scientific basis of environmental modeling studies. The encyclopedia can be used as a stand-alone source of knowledge but amplereferences are provided for readers who wish to go beyond the level of discussion in the book. An electronic version of the data base and a data base management program is available for download at our homepage (http://les.web.psi.ch/TDBbook.htm).
Selenium Its Thermodynamic Properties And Vapor Phase Crystal Growth
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Author : Hua - Cheng Shu
language : en
Publisher:
Release Date : 1978
Selenium Its Thermodynamic Properties And Vapor Phase Crystal Growth written by Hua - Cheng Shu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
List Of Bureau Of Mines Publications And Articles With Subject And Author Index
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Author : United States. Bureau of Mines
language : en
Publisher:
Release Date : 1982
List Of Bureau Of Mines Publications And Articles With Subject And Author Index written by United States. Bureau of Mines and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Mineral industries categories.
Nuclear Science Abstracts
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Author :
language : en
Publisher:
Release Date : 1975
Nuclear Science Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Nuclear energy categories.