Last edited by Didal
Monday, July 27, 2020 | History

3 edition of Evaluation of pyritic oxidation by nuclear methods. found in the catalog.

Evaluation of pyritic oxidation by nuclear methods.

Mellon Institute.

Evaluation of pyritic oxidation by nuclear methods.

by Mellon Institute.

  • 130 Want to read
  • 18 Currently reading

Published by [Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off. in Washington .
Written in English

    Subjects:
  • Pyrites.,
  • Oxidation.,
  • Mössbauer spectroscopy.

  • Edition Notes

    SeriesWater pollution control research series
    ContributionsUnited States. Environmental Protection Agency.
    Classifications
    LC ClassificationsQD181.F4 M46
    The Physical Object
    Paginationix, 31 p.
    Number of Pages31
    ID Numbers
    Open LibraryOL4376658M
    LC Control Number78611170

    A further practicable method for sulfur determination for site assessment, described in TRL , Test 4A, is the microwave digestion method. For this, the sulfur is first extracted by addition of aqua regia (3 part nitric acid:1 part hydrochloric acid) while the sample is being irradiated with microwaves in a . Faramarz Doulati Ardejani, Sajjad Jannesar Malakooti, Seyed Ziaedin Shafaei, Majid Shahhosseini, A Numerical Multi-Component Reactive Model for Pyrite Oxidation and Pollutant Transportation in a Pyritic, Carbonate-Rich Coal Waste Pile in Northern IranEin numerisches Multikomponentenmodell für die Simulation von Pyritoxydation und Schadstofftransport in Pyrit- und Karbonatreichen Kohlebergen.

    Nuclear Engineering Division Topics: Nuclear power stations, Radioactive wastes, Radioactivity, Computational methods, Evaluation methods, Nuclides, Radioactive waste disposal, Waste disposal. AVK: The German NPP Waste Flow Tracking System Low-Temperature Air Oxidation of Uranium Dioxide Single Crystals. @article{osti_, title = {Radiation-oxidation of polymers}, author = {Clough, R L and Gillen, K T}, abstractNote = {Radiation effects on polymers in the presence of air are characterized by complicated phenomena such as dose-rate effects and post-irradiation degradation. Most applications of polymeric materials in radiation environments involve air atmospheres.

    Nature and distribution of chemical species on oxidized pyrite surface: Complementarity of XPS and nuclear microprobe analysis. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms , (), DOI: /SX(01) Statistical evaluation of the metallurgical test data in the ORR-PSF-PVS irradiation experiment /, by Friedemann Stallmann, U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Engineering Technology, and Oak Ridge National Laboratory.


Share this book
You might also like
life and work of Francis C. Sullivan, architect, 1882-1929.

life and work of Francis C. Sullivan, architect, 1882-1929.

Architecture in Britain, 1530 to 1830.

Architecture in Britain, 1530 to 1830.

Viability and real value of silicles of Spanish colewort (Crambe abyssinica Hochst.).

Viability and real value of silicles of Spanish colewort (Crambe abyssinica Hochst.).

Incident management handbook

Incident management handbook

The effect of ice immersion on joint position sense

The effect of ice immersion on joint position sense

Collected papers

Collected papers

The Stainless Steel Rat sings the blues

The Stainless Steel Rat sings the blues

Manual on Uniform commercial code

Manual on Uniform commercial code

Burrowing owl population trends on the Kininvie Blocks from 1993-2007, and ancillary data for additional species at risk in 2007

Burrowing owl population trends on the Kininvie Blocks from 1993-2007, and ancillary data for additional species at risk in 2007

Selected short stories of Sinclair Lewis.

Selected short stories of Sinclair Lewis.

The right teaching of useful knowledg, to fit scholars for som honest profession

The right teaching of useful knowledg, to fit scholars for som honest profession

The recantation of Maister Patrik Adamsone, sometime archbishop of Saint-Androwes in Scotlande

The recantation of Maister Patrik Adamsone, sometime archbishop of Saint-Androwes in Scotlande

Evaluation of pyritic oxidation by nuclear methods by Mellon Institute. Download PDF EPUB FB2

Get this from a library. Evaluation of pyritic oxidation by nuclear methods. [Robert A Baker; Mellon Institute.; United States. Environmental Protection Agency. Water Quality Office.] -- Laboratory studies demonstrated the feasibility of using the Mossbauer effect and a backscattering mode of detecting Kev gamma rays to spectroscopically monitor the oxidation processes taking.

Evaluation of Pyritic Oxidation by Nuclear Methods by Mellon Institute Carnegie-Mellon University Fifth Avenue Pittsburgh, Pennsylvania for the ENVIRONMENTAL PROTECTION AGENCY Program Number Grant No. FII March For sale by the Superintendent of Documents, U.S.

Government Printing Office Washington, D.C., - Price BO cents. Water Research Pergamon Press Vol. 6, pp. Printed in Great Britain EVALUATION OF PYRITIC OXIDATION BY MOSSBAUER SPECTROMETRY ROBERT A. BAKER* Carnegie-Mellon University, Mellon Institute, Fifth Avenue, Pittsburgh, Pennsylvania U.S.A.

(Received 19 March and in final form 20 July ) ~--The feasibility of using the Mossbauer Cited by: 6. Publisher: Washington [Environmental Protection Agency, Water Quality Office]; for sale by the Supt.

of Docs., U.S. Govt. Print. Off. 'A practical method for numerical evaluation of solutions of partial differential equations of the heat conduction type', Proc. Camb. Phil. Soc.,43 (1), 17 Davis, G. 'Mathematical modelling of rare limiting mecha- nisms of pyritic oxidation in overburden dumps', Ph.D.

thesis, University of Wollongong, 18 Davy, D. (Ed Cited by: [Evaluation of ASTM Standard Methods D and D] Journal Article Shimp, N F ; Kuhn, J K ; Evaluation of pyritic oxidation by nuclear methods. book, R J - Energy Sources; (United States) Widespread interest in reducing the sulfur content of coal has increased the need for chemical determinations of the forms of sulfur: sulfate, pyritic.

The degradation of pyritic mudrocks due to oxidation and weathering can have serious consequences for construction, particularly those involving earthworks (BRE, ; Hawkins and Pinches, a; Mead, ; Pye and Miller, ; Reid et al., ).Potential deleterious implications include: the generation of chemically aggressive ground conditions; the deterioration of pavements, and slope.

The energy of that transition depends on the oxidation state of sulfur, which can be mapped to the speciation of the sulfur (Frank et al., ; George and Gorbary, ).

Distinguishing sulfur species in similar oxidation states can be difficult (Behyan et al., ; George et al., ). The experiments require tunable X-rays of ∼ eV.

Thiobacillus ferrooxidans accelerated leaching of iron from all of the pyritic materials tested in shake flask suspensions at loadings of % (wt/vol) pulp density. The presence of sulfur-bearing phases, particularly pyrite, in coal and coal wastes leads to environmental impacts such as acid rock drainage (ARD) upon oxidation of the sulfur in the presence of moisture and oxygen [1,2,3].Although the composition of South African (SA) coal differs across seams and across the 19 coalfields, in general, the SA coals are high in ash (typically 20–40%) and low.

This book, relevant for professionals in the food and pet food industries, presents an evaluation of methods for studies on the oxidative stability and shelf life of bulk oils/fats, fried oils and foods, food emulsions, dried foods, meat and meat products, and seafood in food and pet food.

Atmospheric oxidation of the pyritic waste rock in Maardu, Estonia, 2: An assessment of aluminosilicate buffering potential Article (PDF Available) in Environmental Geology 39(6)   A series of column leaching experiments were performed to understand the leaching behavior of Co, Fe and Ni in Ballangen mine tailings.

Multivariate statistical approaches to evaluate potential risk variations in leachate quality and identifies temperature effects on their leaching behavior.

Reactive pyritic mine tailings can be populated by chemolithotrophic prokaryotes that enhance the solubilities of many metals, though iron-reducing heterotrophic microorganisms can inhibit the environmental risk posed by tailings by promoting processes that are the reverse of those carried out by pyrite-oxidising autotrophic bacteria.

A strain (IT2) of Curtobacterium ammoniigenes, a bacterium. Chalcopyrite (CuFeS 2), which is a typical copper sulfide mineral, often coexists with other sulfide and non-sulfide gangue minerals, and froth flotation is the paramount method to separate the. Active packaging aims to prolong food’s shelf-life by directly interacting with the packaged food.

This type of packaging is characterized by having the active agent incorporated into the package polymer, such as antioxidant additives, that will gradually migrate from the package polymer to the packed food and, consequently, delay food’s natural lipid oxidation. In this study, the.

Request PDF | An analytical assessment on the impact of covers on the onset of air convection in mine wastes | If a mine waste pile is left open, an active chemical reaction of oxidation is often. An earlier mathematical model, developed to describe oxidation of pyritic material in mine wastes and which assumed just one size for the particles composing the wastes, has been extended to take.

An image analysis was performed using optical microscope BX (Olympus) whereas the evaluation of pyrite content and grain sizes performed by method described by Kozusnikova (). The Raask's method () and CQPA methods were applied for the quantitative determination of minerals in our set of 5 coal samples.

a) The Raask's () method. Bioleaching of gold from the ore was carried out applying the fraction ± mm in size using two methods: (1) stimulating the natural microbiome of carbonaceous-argillaceous slates (CAS) and pyritic raw materials and (2) applying enrichment cultures, obtained using different nutrient media from carbonaceous-argillaceous slates.

• Develop a method for direct analysis of organic sulfur. Figure 1 shows the sulfur forms present in coal and Figure 2 shows the sequence used in the ASTM procedures. Total sulfur is determined by the Eschka method ASTM D and pyritic and sulfate sulfur is determined by ASTM method D The Eschka procedure is highly accurate and precise.Sequential extraction procedures (SEPs) have been widely used to characterize the mobility, bioavailibility, and potential toxicity of trace elements in soils and sediments.

Although oft-criticized, these methods may perform best with redox-labile elements (As, Hg, Se) for which more discrete biogeochemical phases may arise from variations in oxidation number.This book discusses the technical alternatives for cleanup of radioactive fluoride salts that were the fuel for the Molten Salt Reactor Experiment, a novel nuclear reactor design that was tested in the s at the Oak Ridge National Laboratory in Tennessee.

These fluoride salts pose an .