Basalt-radionuclide distribution coefficient determinations. FY-1979 annual report Metadata

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Title

  • Main Title Basalt-radionuclide distribution coefficient determinations. FY-1979 annual report

Creator

  • Author: Ames, L.L.
    Creator Type: Personal
  • Author: McGarrah, J.E.
    Creator Type: Personal

Publisher

  • Name: Pacific Northwest Laboratory
    Place of Publication: Richland, Washington
    Additional Info: Battelle Pacific Northwest Labs., Richland, WA (USA)

Date

  • Creation: 1980-09-01

Language

  • English

Description

  • Content Description: Experimental radionuclide distribution coefficients (Kd') were determined for Pomona, Flow E, Umtanum basalts, and secondary mineralization associated with Pomona basalt at 23/sup 0/, 60/sup 0/ and 150/sup 0/C. Radionuclides used were /sup 75/Se, /sup 85/Sr, /sup 99/Tc, /sup 125/I, /sup 135/Cs, /sup 226/Ra, /sup 237/Np, /sup 238/U, /sup 241/Am, and /sup 241/Pu. Solution oxygen contents were controlled by the basalt/groundwater system (Eh = 600 to 700 mV), and were high (8.2 to 8.4 mg/l) at 23/sup 0/C. Oxygen contents and pH changed little in contact with basalt. The effects of temperature changes on radionuclide Kd' results varied depending upon the radionuclide involved, solution-solid reactions, and the relationship of the radionuclide to these reactions. For example, cesium Kd' values decreased from 3100 ml/g for Umtanum basalt at 23/sup 0/C to 120 ml/g at 150/sup 0/C. At the same time, strontium Kd' values increased for Umtanum basalt from 105 ml/g at 23/sup 0/C to complete removal at 150/sup 0/C and 40 days. Radionuclide adsorption coefficient measurements at higher temperatures and pressures were made in addition to the 23/sup 0/C, solution-solid contact time-conditional Kd (Kd') measurements. These include Kd' measurements with Umtanum basalt, Pomona basalt, Flow E basalt and secondary mineralization and radioisotopes of americium, cesium, iodine, neptunium, plutonium, radium, selenium, strontium, technetium and uranium. The additional temperatures involved were 60/sup 0/C, 150/sup 0/C, and 300/sup 0/C. At 150/sup 0/C, argon pressures of 6.9, 13.8, 20.7, and 27.6 MPa will be used to ascertain the effects of pressure changes on Kd' values. So far only the 6.9 MPa argon pressure has been investigated. The upper temperature of 250/sup 0/C is where thermal breakdown of dioctahedral smectites (secondary mineralization) begins.

Subject

  • Keyword: Uranium Isotopes
  • Keyword: Aluminium Silicates
  • Keyword: Volcanic Rocks
  • Keyword: Electron Capture Radioisotopes
  • Keyword: Americium 241
  • STI Subject Categories: 520301 -- Environment, Aquatic-- Radioactive Materials Monitoring & Transport-- Water-- (1987)
  • Keyword: Alkaline Earth Isotopes
  • Keyword: Basalt
  • Keyword: Distribution Functions
  • Keyword: Iodine 125
  • Keyword: Technetium Isotopes
  • STI Subject Categories: 053000 -- Nuclear Fuels-- Environmental Aspects
  • Keyword: Strontium 85
  • Keyword: Cesium 135
  • STI Subject Categories: 54 Environmental Sciences
  • Keyword: Beta-Minus Decay Radioisotopes
  • Keyword: Ph Value
  • Keyword: Minerals
  • Keyword: Hours Living Radioisotopes
  • Keyword: Technetium 99
  • Keyword: Isotopes
  • Keyword: Plutonium Isotopes
  • Keyword: Intermediate Mass Nuclei
  • Keyword: Even-Odd Nuclei
  • Keyword: Ground Water
  • Keyword: Radionuclide Migration
  • Keyword: High Temperature
  • Keyword: Rocks
  • Keyword: Medium Pressure
  • Keyword: Even-Even Nuclei
  • Keyword: Isomeric Transition Isotopes
  • Keyword: Plutonium 241
  • STI Subject Categories: 12 Management Of Radioactive And Non-Radioactive Wastes From Nuclear Facilities
  • Keyword: Odd-Even Nuclei
  • Keyword: Neptunium Isotopes
  • Keyword: Nuclei
  • Keyword: Silicates
  • Keyword: Alpha Decay Radioisotopes
  • Keyword: Mass Transfer
  • Keyword: Selenium 75
  • Keyword: Minutes Living Radioisotopes
  • Keyword: Alkali Metal Isotopes
  • Keyword: Temperature Effects
  • Keyword: Beta Decay Radioisotopes
  • Keyword: Neptunium 237
  • Keyword: Medium Temperature
  • Keyword: Silicon Compounds
  • STI Subject Categories: 11 Nuclear Fuel Cycle And Fuel Materials
  • Keyword: Strontium Isotopes
  • Keyword: Actinide Isotopes
  • Keyword: Aluminium Compounds
  • Keyword: Selenium Isotopes
  • Keyword: Igneous Rocks
  • Keyword: Environmental Transport
  • Keyword: Oxygen Compounds
  • Keyword: Functions
  • Keyword: Radium 226
  • Keyword: Days Living Radioisotopes
  • Keyword: Americium Isotopes
  • Keyword: Cesium Isotopes
  • Keyword: Radioisotopes
  • Keyword: Hydrogen Compounds
  • Keyword: Water
  • Keyword: Uranium 238
  • Keyword: Smectite
  • Keyword: Iodine Isotopes
  • Keyword: Radium Isotopes
  • Keyword: Actinide Nuclei
  • Keyword: Heavy Nuclei
  • Keyword: Years Living Radioisotopes 052002* -- Nuclear Fuels-- Waste Disposal & Storage

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: PNL-3146
  • Grant Number: AC06-76RL01830
  • DOI: 10.2172/6751781
  • Office of Scientific & Technical Information Report Number: 6751781
  • Archival Resource Key: ark:/67531/metadc1191900

Note

  • Display Note: NTIS, PC A04/MF A01.
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