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  • 1
    Publication Date: 2021-03-29
    Description: Zerovalent iron (ZVI) has been proposed as a reactive material in permeable in situ walls for groundwater contaminated by metal pollutants. For such pollutants that interact with corrosion products, the determination of the actual mechanism of their removal is very important to predict their stability in the long term. From a study of the effects of pyrite (FeS2) and manganese nodules (MnO2) on the uranium removal potential of a selected ZVI material, a test methodology (FeS2MnO2 method) is suggested to follow the pathway of contaminant removal by ZVI materials. An interpretation of the removal potential of ZVI for uranium in the presence of both additives corroborates coprecipitation with iron corrosion products as the initial removal mechanism for uranium.
    Description: Keywords: iron, redox reactions, uranium, water treatment
    Description: research
    Keywords: 551.9 ; VJF 000 ; Umweltgeochemie insgesamt
    Language: English
    Type: article , publishedVersion
    Format: 22 S.
    Format: application/pdf
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2021-03-29
    Description: Zerovalent iron (ZVI) has been proposed as reactive material in permeable in situ walls for contaminated groundwater. An economically feasible ZVI-based reactive wall requires cheap but efficient iron materials. From an uranium treatability study and results of iron dissolution in 0.002 M EDTA by five selected ZVI materials, it is shown that current research and field implementation is not based on a rational selection of application-specific iron metal sources. An experimental procedure is proposed which could enable a better material characterization. This procedure consists of mixing ZVI materials and reactive additives, including contaminant releasing materials (CRMs), in long-term batch experiments and characterizing the contaminant concentration over the time.
    Description: Keywords: iron, redox reactions, uranium water, treatment
    Description: research
    Keywords: 551.9 ; VJF 000 ; Umweltgeochemie insgesamt
    Language: English
    Type: article , publishedVersion
    Format: 17 S.
    Format: application/pdf
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
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