View in EDS

Uranium facilitated transport by water-dispersible colloids in field and soil columns

Saved in:
Bibliographic Details
Title: Uranium facilitated transport by water-dispersible colloids in field and soil columns
Authors: Crançon, P.1 pierre.crancon@cea.fr, Pili, E.1, Charlet, L.2
Source: Science of the Total Environment. Apr2010, Vol. 408 Issue 9, p2118-2128. 11p.
Subjects: Migration of uranium, Colloids, Surface contamination, Groundwater, Water pollution, Clay soils, Humic acid content of soils
Abstract: Abstract: The transport of uranium through a sandy podzolic soil has been investigated in the field and in column experiments. Field monitoring, numerous years after surface contamination by depleted uranium deposits, revealed a 20cm deep uranium migration in soil. Uranium retention in soil is controlled by the <50µm mixed humic and clayey coatings in the first 40cm i.e. in the E horizon. Column experiments of uranium transport under various conditions were run using isotopic spiking. After 100 pore volumes elution, 60% of the total input uranium is retained in the first 2cm of the column. Retardation factor of uranium on E horizon material ranges from 1300 (column) to 3000 (batch). In parallel to this slow uranium migration, we experimentally observed a fast elution related to humic colloids of about 1–5% of the total-uranium input, transferred at the mean porewater velocity through the soil column. In order to understand the effect of rain events, ionic strength of the input solution was sharply changed. Humic colloids are retarded when ionic strength increases, while a major mobilization of humic colloids and colloid-borne uranium occurs as ionic strength decreases. Isotopic spiking shows that both 238U initially present in the soil column and 233U brought by input solution are desorbed. The mobilization process observed experimentally after a drop of ionic strength may account for a rapid uranium migration in the field after a rainfall event, and for the significant uranium concentrations found in deep soil horizons and in groundwater, 1km downstream from the pollution source. [Copyright &y& Elsevier]
Copyright of Science of the Total Environment is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 48469505
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Uranium facilitated transport by water-dispersible colloids in field and soil columns
– Name: Author
  Label: Authors
  Group: Au
  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Cran&#231;on%2C+P%2E%22&quot;&gt;Cran&#231;on, P.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;i&gt; pierre.crancon@cea.fr&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Pili%2C+E%2E%22&quot;&gt;Pili, E.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Charlet%2C+L%2E%22&quot;&gt;Charlet, L.&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt;
– Name: TitleSource
  Label: Source
  Group: Src
  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Science+of+the+Total+Environment%22&quot;&gt;Science of the Total Environment&lt;/searchLink&gt;. Apr2010, Vol. 408 Issue 9, p2118-2128. 11p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Migration+of+uranium%22&quot;&gt;Migration of uranium&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Colloids%22&quot;&gt;Colloids&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Surface+contamination%22&quot;&gt;Surface contamination&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Groundwater%22&quot;&gt;Groundwater&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Water+pollution%22&quot;&gt;Water pollution&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Clay+soils%22&quot;&gt;Clay soils&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Humic+acid+content+of+soils%22&quot;&gt;Humic acid content of soils&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: The transport of uranium through a sandy podzolic soil has been investigated in the field and in column experiments. Field monitoring, numerous years after surface contamination by depleted uranium deposits, revealed a 20cm deep uranium migration in soil. Uranium retention in soil is controlled by the &lt;50&#181;m mixed humic and clayey coatings in the first 40cm i.e. in the E horizon. Column experiments of uranium transport under various conditions were run using isotopic spiking. After 100 pore volumes elution, 60% of the total input uranium is retained in the first 2cm of the column. Retardation factor of uranium on E horizon material ranges from 1300 (column) to 3000 (batch). In parallel to this slow uranium migration, we experimentally observed a fast elution related to humic colloids of about 1–5% of the total-uranium input, transferred at the mean porewater velocity through the soil column. In order to understand the effect of rain events, ionic strength of the input solution was sharply changed. Humic colloids are retarded when ionic strength increases, while a major mobilization of humic colloids and colloid-borne uranium occurs as ionic strength decreases. Isotopic spiking shows that both 238U initially present in the soil column and 233U brought by input solution are desorbed. The mobilization process observed experimentally after a drop of ionic strength may account for a rapid uranium migration in the field after a rainfall event, and for the significant uranium concentrations found in deep soil horizons and in groundwater, 1km downstream from the pollution source. [Copyright &amp;y&amp; Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: &lt;i&gt;Copyright of Science of the Total Environment is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=48469505
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.scitotenv.2010.01.061
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 2118
    Subjects:
      – SubjectFull: Migration of uranium
        Type: general
      – SubjectFull: Colloids
        Type: general
      – SubjectFull: Surface contamination
        Type: general
      – SubjectFull: Groundwater
        Type: general
      – SubjectFull: Water pollution
        Type: general
      – SubjectFull: Clay soils
        Type: general
      – SubjectFull: Humic acid content of soils
        Type: general
    Titles:
      – TitleFull: Uranium facilitated transport by water-dispersible colloids in field and soil columns
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Crançon, P.
      – PersonEntity:
          Name:
            NameFull: Pili, E.
      – PersonEntity:
          Name:
            NameFull: Charlet, L.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 04
              Text: Apr2010
              Type: published
              Y: 2010
          Identifiers:
            – Type: issn-print
              Value: 00489697
          Numbering:
            – Type: volume
              Value: 408
            – Type: issue
              Value: 9
          Titles:
            – TitleFull: Science of the Total Environment
              Type: main
ResultId 1