The uptake of uranium by Eleocharis dulcis (Chinese water chestnut) in the Ranger Uranium Mine constructed wetland filter

R Overall, David Parry

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    Eleocharis dulcis has proliferated in a constructed wetland used to treat uranium mine runoff water, where it rapidly accumulates significant quantities of uranium (U) in its roots and relatively little in its stems. We investigated the mechanism of U uptake and accumulation by E. dulcis using field-sampling techniques and microcosm test work. Results from the microcosm trials and outcomes from statistical tests of field sampled macrophyte, water and sediment indicate that the primary source of U for E. dulcis is the water column. Basipetal translocation of U to the plant's roots was indicated by significant correlations between the U content of stems, taproots and rhizomes and XPS detection of U inside root segments. U sequestering from sediment interstitial water by Fe hydroxides on root surfaces was also evident. No basipetal translocation was evident following the 28-day duration of the microcosm experiments, indicating that it is a longer-term process. � 2004 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    Pages (from-to)307-320
    Number of pages14
    JournalEnvironmental Pollution
    Volume132
    Issue number2
    Publication statusPublished - 2004

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    Eleocharis
    Uranium mines
    Uranium
    Wetlands
    Water
    Sediments
    Hydroxides
    Rhizome
    Plant Roots
    Statistical tests
    Runoff
    X ray photoelectron spectroscopy
    Sampling
    Experiments

    Cite this

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    title = "The uptake of uranium by Eleocharis dulcis (Chinese water chestnut) in the Ranger Uranium Mine constructed wetland filter",
    abstract = "Eleocharis dulcis has proliferated in a constructed wetland used to treat uranium mine runoff water, where it rapidly accumulates significant quantities of uranium (U) in its roots and relatively little in its stems. We investigated the mechanism of U uptake and accumulation by E. dulcis using field-sampling techniques and microcosm test work. Results from the microcosm trials and outcomes from statistical tests of field sampled macrophyte, water and sediment indicate that the primary source of U for E. dulcis is the water column. Basipetal translocation of U to the plant's roots was indicated by significant correlations between the U content of stems, taproots and rhizomes and XPS detection of U inside root segments. U sequestering from sediment interstitial water by Fe hydroxides on root surfaces was also evident. No basipetal translocation was evident following the 28-day duration of the microcosm experiments, indicating that it is a longer-term process. � 2004 Elsevier Ltd. All rights reserved.",
    keywords = "Eleocharis dulcis (chinese water chestnut), Sequestering, Runoff, Sediments, Water, Wetlands, X ray photoelectron spectroscopy, Uranium, heavy metal, uranium, bioremediation, constructed wetland, macrophyte, runoff, translocation, aquatic environment, article, bioaccumulation, correlation analysis, Eleocharis, microcosm, mining, plant metabolism, pollution monitoring, quantitative analysis, sampling, sedimentation rate, statistical significance, technique, water pollution, wetland, Biodegradation, Environmental, Biological Transport, Mining, Radioactive Waste, Waste Management, Eleocharis dulcis, Trapa",
    author = "R Overall and David Parry",
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    language = "English",
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    The uptake of uranium by Eleocharis dulcis (Chinese water chestnut) in the Ranger Uranium Mine constructed wetland filter. / Overall, R; Parry, David.

    In: Environmental Pollution, Vol. 132, No. 2, 2004, p. 307-320.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - The uptake of uranium by Eleocharis dulcis (Chinese water chestnut) in the Ranger Uranium Mine constructed wetland filter

    AU - Overall, R

    AU - Parry, David

    PY - 2004

    Y1 - 2004

    N2 - Eleocharis dulcis has proliferated in a constructed wetland used to treat uranium mine runoff water, where it rapidly accumulates significant quantities of uranium (U) in its roots and relatively little in its stems. We investigated the mechanism of U uptake and accumulation by E. dulcis using field-sampling techniques and microcosm test work. Results from the microcosm trials and outcomes from statistical tests of field sampled macrophyte, water and sediment indicate that the primary source of U for E. dulcis is the water column. Basipetal translocation of U to the plant's roots was indicated by significant correlations between the U content of stems, taproots and rhizomes and XPS detection of U inside root segments. U sequestering from sediment interstitial water by Fe hydroxides on root surfaces was also evident. No basipetal translocation was evident following the 28-day duration of the microcosm experiments, indicating that it is a longer-term process. � 2004 Elsevier Ltd. All rights reserved.

    AB - Eleocharis dulcis has proliferated in a constructed wetland used to treat uranium mine runoff water, where it rapidly accumulates significant quantities of uranium (U) in its roots and relatively little in its stems. We investigated the mechanism of U uptake and accumulation by E. dulcis using field-sampling techniques and microcosm test work. Results from the microcosm trials and outcomes from statistical tests of field sampled macrophyte, water and sediment indicate that the primary source of U for E. dulcis is the water column. Basipetal translocation of U to the plant's roots was indicated by significant correlations between the U content of stems, taproots and rhizomes and XPS detection of U inside root segments. U sequestering from sediment interstitial water by Fe hydroxides on root surfaces was also evident. No basipetal translocation was evident following the 28-day duration of the microcosm experiments, indicating that it is a longer-term process. � 2004 Elsevier Ltd. All rights reserved.

    KW - Eleocharis dulcis (chinese water chestnut)

    KW - Sequestering

    KW - Runoff

    KW - Sediments

    KW - Water

    KW - Wetlands

    KW - X ray photoelectron spectroscopy

    KW - Uranium

    KW - heavy metal

    KW - uranium

    KW - bioremediation

    KW - constructed wetland

    KW - macrophyte

    KW - runoff

    KW - translocation

    KW - aquatic environment

    KW - article

    KW - bioaccumulation

    KW - correlation analysis

    KW - Eleocharis

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    KW - mining

    KW - plant metabolism

    KW - pollution monitoring

    KW - quantitative analysis

    KW - sampling

    KW - sedimentation rate

    KW - statistical significance

    KW - technique

    KW - water pollution

    KW - wetland

    KW - Biodegradation, Environmental

    KW - Biological Transport

    KW - Mining

    KW - Radioactive Waste

    KW - Waste Management

    KW - Eleocharis dulcis

    KW - Trapa

    M3 - Article

    VL - 132

    SP - 307

    EP - 320

    JO - Environmental Pollution

    JF - Environmental Pollution

    SN - 0269-7491

    IS - 2

    ER -