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Saturday, July 11, 2020 | History

3 edition of Enhanced removal of radioactive particles by fluorocarbon surfactant solutions found in the catalog.

Enhanced removal of radioactive particles by fluorocarbon surfactant solutions

Enhanced removal of radioactive particles by fluorocarbon surfactant solutions

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Published by Division of Regulatory Applications, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, Supt. of Docs., U.S. G.P.O. [distributor] in Washington, DC .
Written in English

    Subjects:
  • Nuclear power plants -- Equipment and supplies -- Cleaning.,
  • Radioactive decontamination.,
  • Cleaning compounds.,
  • Radioactive waste disposal.,
  • Fluorocarbons -- Industrial applications.

  • Edition Notes

    Statementprepared by R. Kaiser, O.K. Harling.
    ContributionsHarling, Otto K., U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Regulatory Applications., Entropic Systems, Inc.
    The Physical Object
    FormatMicroform
    Paginationxxi, 75 p.
    Number of Pages75
    ID Numbers
    Open LibraryOL15375745M

      Clearly, the carbon coating will greatly enhance the surface area, which can be the main reason of significant enhanced dye removal performance of hollow SnO 2 @C nanoparticles. The large number and array of different functional groups on the carbon layers (e.g., carboxylic, hydroxyl, carbonyl) implied the existence of many types of adsorbent. The particles were 50PTXDPPC/DPPG particles with 1 mol% nitrobenzoxadiazole phosphatidylcholine (NBD-PC) fluorophore to allow for fluorescent imaging of the particles. After exposure, the particle solution was removed and the cells were washed twice with mM glycine to remove any unbound particles, followed by a wash with PBS.

      @article{osti_, title = {SEPARATION AND EXTRACTION OF PLUTONIUM IN MIXED WASTE}, author = {Arthur E. Desrosiers, ScD, CHP and Robert Kaiser, ScD and Antkowiak, Jason and Desrosiers, Justin and Jondro, Josh and Kulczyk, Adam}, abstractNote = {The Sonatol process uses ultrasonic agitation in fluorinated surfactant solutions to remove radioactive particles .   Gemini cationic surfactants are compounds which are composed of two hydrophilic head groups and two hydrophobic tails linked by a spacer at the head groups or closed to them. The spacer can be either hydrophobic or hydrophilic. It can be rigid or flexible. The neutral charge of the molecule is retained by the presence of organic or inorganic .

      The clear supernatant liquid was discarded and a solution of 50/50 semiconductor grade methanol (%, Alfa Aesar, Ward Hill, MA , USA) and de-ionized water was added to the centrifuge tubes in order to remove sodium chloride and the surfactant from the surfaces of the particles. These tubes were shaken vigorously for 5 min.   Surfactant-enhanced phytoremediation is an eco-friendly treatment for reducing soil contamination. Cypermethrin (CYP) is one of the most widely used pyrethroid insecticides against different pests, and its use causes soil contamination. The aim of this study was to investigate the removal of CYP from contaminated soil by Plantago major (PM) and some surfactants.


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Enhanced removal of radioactive particles by fluorocarbon surfactant solutions Download PDF EPUB FB2

The proposed research addresses the application of esi's enhanced particle removal to the non-destructive decontamination of nuclear equipment. in this process, the part to be cleaned is contacted, under conditions of shear, with a solution of a high molecular weight fluorocarbon surfactant in an inert perfluorinated liquid.

Enhanced removal of radioactive particles by fluorocarbon surfactant solutions Technical Report Kaiser, R ; Harling, O K The proposed research addressed the application of ESI`s particle removal process to the non-destructive decontamination of nuclear equipment.

Get this from a library. Enhanced removal of radioactive particles by fluorocarbon surfactant solutions. [R Kaiser; Otto K Harling; U.S.

Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Regulatory Applications.; Entropic Systems, Inc.].

enhanced removal of radioactive particles by fluorocarbon surfactant solutions. amount: $, the proposed research addresses the application of esi's enhanced particle removal to the non-destructive decontamination of nuclear equipment.

in this process, the part to be cleaned is contacted, un. 2. Adsorption to interfaces. There are now many methods to synthesise small, monodisperse particles of different shape and surface coating. If the coating, e.g. alkylsilane or fluorocarbon, is homogeneous over the particle surface following, say, reaction in the vapour phase, such particles are surface-active but, unlike surfactants, are not by: The media used in this process are a wash solution of a high molecular weight fluorocarbon surfactant in a perfluorinated carrier liquid which results in enhanced particle removal.

Enhanced removal of radioactive particles by fluorocarbon surfactant solutions. Article. Aug ; Membrane Handbook. Chapter. Jan ; Membrane Handbook. Chapter. The effect of nonionic polyoxyethylene (POE) surfactants on the solubilization rate of individual polycyclic aromatic hydrocarbons (PAHs) from a weathered, coal tar-contaminated soil obtained from a manufactured gas plant (MGP) site was studied.

The release of PAHs upon surfactant washing were measured with time. Time-varying adsorption of PAHs to Tenax resin was also. The aqueous solution copolymer with mol% grafting density and 20% v/v ethanol form unstable films which rupture quickly at a critical thickness of about nm, both at 22 °C and 37 °C (Fig.

insertion of indomethacin with polymer:IMC ratios of w/w and w/w, however, results in the formation of equilibrium foam films both at 22 °C and at 37 °C (Fig.

The surfactant was used to generate foam in the rock samples. Although a non-ionic ethoxylated fluorocarbon surfactant Capstone- FS was used in this study, the findings from this study generally apply to all foam in porous media regardless of the type of surfactant.

Enhanced Removal of Sub-micron Particles from Surfaces by High Molecular Weight Fluorocarbon Surfactant Solutions. *immediately available upon purchase as print book shipments may be delayed due to the COVID crisis.

ebook access is temporary and does not include ownership of the ebook. Only valid for books with an ebook version. This paper deals with the removal of copper ions from aqueous solutions by using surfactant-enhanced powdered activated carbon (PAC)/microfiltration (MF) hybrid process, including the evaluation of process performance and fouling dynamics at various linear alkyl benzene sulfonate (LABS), PAC, and Cu 2 + concentrations of feed solution.

Although the use of surfactant. Despite the progress made on renewable energy, oil and gas remains the world’s primary energy source. Meanwhile, large amounts of oil deposits remain unrecovered after application of traditional oil recovery methods.

Chemical enhanced oil recovery (EOR) has been adjudged as an efficient oil recovery technique to recover bypassed oil and residual oil trapped. Accordingly, we have designed surfactant polymers with fluorocarbon side chains, which would be expected to favor adsorption and strong adhesion on PTFE under aqueous solutions.

Fluorocarbon chains have similar chemical structure to the PTFE substrate. 28 They are also more hydrophobic 29 and have a larger molecular cross section than. Surfactants are compounds that lower the surface tension (or interfacial tension) between two liquids, between a gas and a liquid, or between a liquid and a solid.

Surfactants may act as detergents, wetting agents, emulsifiers, foaming agents, and dispersants. The word surfactant is a blend of surface-active agent. Agents that increase surface tension are surface active in the.

Surfactants are surface active agents, molecules that have a significant role in emulsions, suspensions, and foams. They find widespread application in personal care, cosmetics, pharmaceuticals, agrochemicals and the food industry. Their classification, physical properties, phase behavior, their effects and applications are covered in this book.

Book description. The Encyclopedia of Surface and Colloid Science. The particles were then re-dispersed in a series of 20 mL DT solutions, with concentrations varying from mM to 50 mM, details of which are specified in Table 1.

The DT solutions were obtained by a series of dilutions from M DT, and the solution pH was fixed between and to deprotonate both amine groups and minimize the possible. A surfactant with both fluorocarbon and organic (ethyleneoxy) domains was synthesized.

2,2,3,3,4,4,5,5,6,6,7,7-Dodecafluoroheptanol ( g, mmol, 3 eq.) and sodium hydride (60% in mineral oil, ( g, mmol, eq.)) were stirred in mL of THF in an ice bath for 20 minutes, and then for a further 1 hour as the reaction. The development of the fluorocarbon industry coincided with World War II.

Prior to that, fluorocarbons were prepared by reaction of fluorine with the hydrocarbon, i.e., direct fluorination. Because C-C bonds are readily cleaved by fluorine, direct fluorination mainly affords smaller perfluorocarbons, such as tetrafluoromethane, hexafluoroethane. Surfactant-enhanced washing of oil-based drill cuttings was evaluated as a technology of benefit to domestic oil producers.

Laboratory studies showed the branched CC15 alcohol propoxylate sulfate to be a promising surfactant for. Robert Kaiser, "Enhanced Removal of Sub-Micron Particles From Surfaces By High Molecular Weight Fluorocarbon Surfactant Solutions", Particles on Surfaces 2, book, edited by K.

L. Mittal, Plenum Press, New York & London, Alkylaryl sulfonate is a typical family of surfactants used for chemically enhanced oil recovery (EOR). While it has been widely used in surfactant–polymer flooding at Karamay Oilfield (40 °C, salin mg/L), its aggregation behavior in aqueous solutions and the contribution of aggregation to EOR have not been investigated so far.

In this study, raw .