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Filtering by: Creator Ostermann, Stacey D. Remove constraint Creator: Ostermann, Stacey D. Academic Affiliation Chemical, Biological and Environmental Engineering Remove constraint Academic Affiliation: Chemical, Biological and Environmental Engineering Subject Nanoparticles -- Environmental aspects Remove constraint Subject: Nanoparticles -- Environmental aspects

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  • Development of traceable metal oxide nanoparticles for examining environmental fate and transport

    Creator:
    Rowbotham, Brian
    Abstract:
    The fate and transport of engineered nanoparticles (ENPs) such as titanium dioxide (TiO₂) are of concern due to their increasing use in consumer products. Although analytical methods for detection and quantification of ENPs in environmental matrices are being developed, these methods are difficult, time consuming, and not easily validated for...
    Resource Type:
    Masters Thesis
    Full Text:
    treatment, an d the ability of labeled particles to be detected against background titanium concentrations

  • The effects of engineered coatings and natural organic matter on nanoparticle aggregation

    Creator:
    McDowell, Shannon A.
    Abstract:
    In order to better predict the aggregation state of nanomaterials, the factors that influence aggregation must be understood. The combined effects of natural and engineered coatings have been shown to factor into nanoparticle aggregation behavior in preliminary research. In this study, aggregation behaviors of gold nanoparticles with two different engineered...
    Resource Type:
    Masters Thesis
    Full Text:
    . Aggregation of cit-AuNPs in the presence of NOM isolates and KCl. (a-d) TR-DLS profiles of cit-AuNPs in 1

  • Effects of silver ions and nanoparticles on suspended cells and biofilms of Nitrosomonas europaea

    Creator:
    Barker, Leila Kelly
    Abstract:
    Silver nanoparticles are increasingly being incorporated into consumer products due to their broad-spectrum antimicrobial properties. The resulting influx of silver nanoparticles into wastewater may pose a threat to bacteria involved in biological wastewater treatment. Ammonia-oxidizing bacteria, which convert ammonia to nitrite in the first step of nitrification, are highly sensitive...
    Resource Type:
    Masters Thesis
    Full Text:
    their lab space and helped with fluorescence microscopy. Thanks to the Stacey Harper lab for use of

  • Heteroaggregation of gold nanoparticles with model colloids and the influence of environmental aqueous chemistry

    Creator:
    Pike, Daniel J.
    Abstract:
    Nanoparticles are becoming increasingly important in numerous technological fields but evidence shows that they can be toxic to many organisms. To predict their fate and transport in the environment, nanoparticle attachment to naturally occurring colloids must be examined. This study investigated citrate-capped gold nanoparticle (Cit-AuNP) heteroaggregation with two model colloids...
    Resource Type:
    Masters Thesis
    Full Text:
    is important to acknowledge the assistance received from Dr. Stacey Harper and Dr. Christine Kelly