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Filtering by: Subject Iron -- Absorption and adsorption Remove constraint Subject: Iron -- Absorption and adsorption Advisor Selker, John S. Remove constraint Advisor: Selker, John S.

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  • Interactions between microbial dynamics and transport processes in soils

    Creator:
    Rockhold, Mark L.
    Abstract:
    An experimental and numerical modeling investigation was conducted to study interactions between microbial dynamics and transport processes in variably saturated porous media. These interactions are important in a variety of applied problems such as water and wastewater treatment, bioremediation, and oil-field recovery operations. These processes and interactions also have great...
    Resource Type:
    Dissertation
    Full Text:
    polypeptides that can behave like surfactants. Adsorption of bacteria and surfactants at gas-liquid interfaces

  • Transport of water and solutes from tile-drained fields in the Willamette Valley, Oregon : A field scale study

    Creator:
    Warren, Kristina
    Abstract:
    Tile drainage increases aeration in the root zone of poorly drained soils by accelerating water movement from the subsurface. Water movement is the main agent of chemical transport, either transporting soluble materials directly (e.g., nitrate) or by transporting the soil particles that bind adsorptive compounds (e.g., pesticides). The detection frequency...
    Resource Type:
    Masters Thesis

  • Observations of gas flow in porous media using the light transmission technique

    Creator:
    Parker, Laila Belkov
    Abstract:
    A novel technique was developed for studying gas phase flow in unsaturated porous media. Carbon dioxide was pumped through a back-lit chamber packed with translucent sand which was variably saturated with water containing the pH indicator dye methyl red. As the carbon dioxide dissolved in the pore water, lowering the...
    Resource Type:
    Masters Thesis
    Full Text:
    calibrated relationships between frequency-specific light absorption and carbon dioxide concentration

  • Characterization of hydrologic parameters and processes in shrink-swell clay soils

    Creator:
    Stewart, Ryan D.
    Abstract:
    Vertisols and other vertic-intergrade soils are found all over the globe, including many agricultural and urban areas. These soils are characterized by their cyclical shrinking and swelling behaviors, where bulk density and porosity distribution both vary as functions of time and/or soil moisture. In turn, alterations in physical soil parameters...
    Resource Type:
    Dissertation
    Full Text:
    Characterization of Hydrologic Parameters and Processes