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  • U(VI) transport in subsurface materials: is two-site, one-species modeling sufficient?

    Creator:
    Harrington, Stephanie J.
    Abstract:
    Uranium adsorption to Hanford sediment was studied for various pH, total inorganic carbon concentrations, and total U(VI) concentrations. Both batch and transport studies were done in an attempt to understand the adsorptive trend of U(VI) on Hanford sediment, and the changes in adsorption as both pH and total inorganic carbon...
    Resource Type:
    Masters Thesis
    Full Text:
    degree of Master of Science in Civil Engineering presented on September 24, 2004. Title: U(VI

  • Cross-laminated timber engineering : improvement and application

    Creator:
    Kramer, Anthonie
    Abstract:
    The development of cross-laminated timber (CLT) panel technology has opened up new opportunities for wood in tall buildings. Several characteristics including seismic performance and speed of construction have raised interest among designers. As CLT gains acceptance in the industry, alternative structural solutions need to be investigated to improve performance of...
    Resource Type:
    Masters Thesis
    Full Text:
    Engineering and Wood Science presented on March 14, 2014. Title: Cross-Laminated Timber Engineering

  • The fate of hydrophobic organic compounds in soil systems : a kinetic model and sensitivity analysis

    Creator:
    Cork, Tracy D.
    Abstract:
    A mathematical model was developed using finite difference numerical techniques to examine the effects of kinetic parameters on the fate of hydrophobic organic compounds in soil systems. The model included advection; dispersion; bacterial metabolism; and sorption and desorption to soil solids and bacteria, and degradation by bacteria. The most important...
    Resource Type:
    Masters Thesis
    Full Text:
    degree of Master of Science in Civil Engineering presented on February 26, 1988. Title: The Fate of

  • A mathematical model for adsorptive bubble-separation processes

    Creator:
    T'ang, Li
    Abstract:
    Adsorptive bubble-separation processes are used to remove adsorptive contaminants from wastewater. A mathematical model was developed for the adsorptive bubble separation processes in a countercurrent column. The model included an assumption that linear adsorption of the solute occurred on the gas bubbles. Predictions indicated that aqueous column height has less...
    Resource Type:
    Dissertation
    Full Text:
    Engineering presented on April 3, 1990. Title: A Mathematical Model for Adsorptive Bubble- Separation

  • The present status of plastics as an engineering material

    Creator:
    Summersett, John Steve
    Abstract:
    The present status of plastics is one of constant change, but this thesis attempts to focus attention on the state of the industry as of 1967. Beginning with a brief title definition and history of plastics, the writer proceeds to a discussion on the structural characteristics of plastics. Under this...
    Resource Type:
    Masters Thesis
    Full Text:
    The present status of plastics as an engineering material

  • Wood materials and shearwalls of older light-frame residential structures

    Creator:
    Carroll, Cameron T.
    Abstract:
    Light-frame construction practices and materials have changed greatly over the past 100 years. Contemporary research has focused on modern construction; thus, we know a great deal about the behavior of modern lightframe buildings under lateral forces. However, there are many light-frame buildings that were built prior to the introduction of...
    Resource Type:
    Masters Thesis
    Full Text:
    : _______________________________________________________________ Major Professor, representing Wood Science Engineering and Civil Engineering

  • Reductive, dechlorination of sediment-sorbed polychlorinated biphenyls by vitamin B₁₂(subscript s)

    Creator:
    Trobaugh, Darin James
    Abstract:
    The reductive dechlorination of chlorobiphenyls in sediment by titanium(III) citrate-reduced vitamin Bus was studied in batch reactors. Long term ampoule studies demonstrated reductive dechlorination of sediment-sorbed 2,3,4,5,6-pentachlorobiphenyl (2,3,4,5,6-PeCB) to tetra-, tri-, di-, and monochlorobiphenyl products. Over 50% chlorine removal was observed over 160 days. The results of the ampoule experiment...
    Resource Type:
    Masters Thesis
    Full Text:
    of Master of Science in Civil Engineering presented on July 1, 1998. Title: Reductive

  • Demonstration of a permeable barrier technology for the in-situ bioremediation of pentachlorophenol contaminated groundwater

    Creator:
    Cole, Jason David
    Abstract:
    A pilot scale demonstration of a biological permeable barrier was conducted in a pentachlorophenol-contaminated aquifer at a wood preserving facility. A permeable reactor was constructed to fit within a large diameter well. Arranged in series, a cylindrical reactor 24" x 36" (0.61 x 0.91m) (diameter x height) was partitioned to...
    Resource Type:
    Dissertation
    Full Text:
    Jason David Cole for the degree of Doctor of Philosophy in Civil Engineering presented on May 5,2000

  • Reductive dechlorination of chlorophenols by vitamin B

    Creator:
    Smith, Mark Harrison
    Resource Type:
    Dissertation
    Full Text:
    Engineering presented on June 22. 1993. Title: Reductive Dechlorination of Chlorophenols by Vitamin B12

  • Bioremediation of low-permeability, pentachlorophenol-contaminated soil by laboratory and full-scale processes

    Creator:
    Havighorst, Mark B.
    Abstract:
    Ex-situ bioremediation of saturated soil contaminated with pentachlorophenol and 2,3,5,6-TeCP is commonly accomplished by landfarming or by treatment in a bioreactor. Treating saturated, low-permeability soils in bioreactors, without pre-treatment requires a reactor capable of promoting anaerobic and/or aerobic removal of chlorophenols without transferring these contaminants to the aqueous phase. A...
    Resource Type:
    Masters Thesis
    Full Text:
    of Master of Science in Civil Engineering presented on January 30, 1998. Title: Bioremediation of