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    Influence of groundwater composition on subsurface iron and arsenic removal

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    Type
    Article
    Authors
    Moed, David H.
    Van Halem, Doris
    Verberk, J. Q J C
    Amy, Gary L.
    Van Dijk, Johannis C.
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2012-06-08
    Online Publication Date
    2012-06-08
    Print Publication Date
    2012-07
    Permanent link to this record
    http://hdl.handle.net/10754/561408
    
    Metadata
    Show full item record
    Abstract
    Subsurface arsenic and iron removal (SAR/SIR) is a novel technology to remove arsenic, iron and other groundwater components by using the subsoil. This research project investigated the influence of the groundwater composition on subsurface treatment. In anoxic sand column experiments, with synthetic groundwater and virgin sand, it was found that several dissolved substances in groundwater compete for adsorption sites with arsenic and iron. The presence of 0.01 mmol L -1phosphate, 0.2 mmol L -1 silicate, and 1 mmol L -1 nitrate greatly reduced the efficiency of SAR, illustrating the vulnerability of this technology in diverse geochemical settings. SIR was not as sensitive to other inorganic groundwater compounds, though iron retardation was limited by 1.2 mmol L -1 calcium and 0.06 mmol L -1 manganese. © IWA Publishing 2012.
    Citation
    Moed, D. H., van Halem, D., Verberk, J. Q. J. C., Amy, G. L., & van Dijk, J. C. (2012). Influence of groundwater composition on subsurface iron and arsenic removal. Water Science and Technology, 66(1), 173–178. doi:10.2166/wst.2012.151
    Publisher
    IWA Publishing
    Journal
    Water Science and Technology
    DOI
    10.2166/wst.2012.151
    PubMed ID
    22678215
    ae974a485f413a2113503eed53cd6c53
    10.2166/wst.2012.151
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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