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    Removal of dissolved organic carbon and nitrogen during simulated soil aquifer treatment

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    Publication date
    2013
    Author
    Essandoh, Helen M.K.
    Tizaoui, Chedly
    Mohamed, Mostafa H.A.
    Keyword
    Aluminum silicates;
    Anaerobiosis;
    Biodegradation; Environmental;
    Carbon; Isolation & purification; Denitrification;
    Fatty acids;
    Groundwater;
    Nitrification;
    Nitrogen;
    Phospholipids;
    Silicon Dioxide;
    Soil; Soil column;
    Soil microbiology;
    Sulfates;
    Waste water;
    Water purification methods;
    REF 2014
    
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    Abstract
    Soil aquifer treatment was simulated in 1 m laboratory soil columns containing silica sand under saturated and unsaturated soil conditions to examine the effect of travel length through the unsaturated zone on the removal of wastewater organic matter, the effect of soil type on dissolved organic carbon removal and also the type of microorganisms involved in the removal process. Dissolved organic carbon removal and nitrification did enhance when the wastewater travelled a longer length through the unsaturated zone. A similar consortium of microorganisms was found to exist in both saturated and unsaturated columns. Microbial concentrations however were lowest in the soil column containing silt and clay in addition to silica sand. The presence of silt and clay was detrimental to DOC removal efficiency under saturated soil conditions due to their negative effect on the hydraulic performance of the soil column and microbial growth.
    URI
    http://hdl.handle.net/10454/5963
    Citation
    Essandoh, H. M., Tizaoui, C., Mohamed, M. H. A. (2013) Removal of dissolved organic carbon and nitrogen during simulated soil aquifer treatment. Water Research, 47 (11), 3559-3572.
    Link to publisher’s version
    http://dx.doi.org/10.1016/j.watres.2013.04.013
    Type
    Article
    Collections
    Engineering and Informatics Publications

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