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  • Modeling the conversion of glucose to hydroxymethylfurfural

    Creator:
    Liu, Daming
    Abstract:
    Cellulosic biomass materials have three principal components: cellulose, hemicellulose, and lignin. Under mild acid conditions and high temperature, the first two components yield a variety of sugars: hexoses and pentoses, which are subject to decomposition on continued exposure to hot dilute acid. In the process hexoses yield hydroxymethylfurfural (HMF) which,...
    Resource Type:
    Masters Thesis
    Full Text:
    like to express my sincere appreciation to Dr. Robert D. Sproull, my thesis advisor, for his guidance

  • Iron oxidation by Thiobacillus ferrooxidans

    Creator:
    Kang, Sun Ki
    Abstract:
    The bacterium most frequently used in microbial leaching processes and studies is Thiobacillus ferrooxidans. Applications of this bacterium include the treatment of coal, low-grade ores and industrial solid wastes for the solubilization of pyrite and other trace metals associated with sulfides. The goal of this study was the development of...
    Resource Type:
    Masters Thesis
    Full Text:
    Privacy Robert D./Sproull The bacterium most frequently used in microbial leaching processes and

  • Modeling the conversion of arabinose to furfural

    Creator:
    Yasuda, Dean D.
    Abstract:
    Hemicellulose hydrolyzate contains many carbohydrate fractions, the most abundant being xylose, arabinose, and glucuronic acid. Under mild acid conditions (0.025 - 0.10 M sulfuric acid) and high temperatures (140°C to 200°C) the first two components form furfural through a series of dehydration reactions. Unlike xylose and arabinose, glucuronic acid must...
    Resource Type:
    Masters Thesis
    Full Text:
    : Redacted for Privacy Robert D. Sproull Hemicellulose hydrolyzate contains many carbohydrate fractions

  • Remediation of heavy-metal contaminated soils using succinic acid

    Creator:
    Kaul, Arvind
    Abstract:
    Succinic acid, a low molecular weight dicarboxylic acid was used to leach out heavy metals from Willamette Valley soil (contaminated separately with lead, copper, and zinc) in form of water-soluble organo-metal complexes. The research tasks included developing synthetic contaminated soils representative of those found at Superfund sites and making heavy...
    Resource Type:
    Masters Thesis
    Full Text:
    Succinic Acid Abstract approved: Robert D. S r 11 Succinic acid, a low molecular weight dicarboxylic acid

  • The mobilization of heavy metals from contaminated soil using low molecular weight organic acids

    Creator:
    Kang, Sun Ki
    Abstract:
    More than 30,000 potential Superfund sites have been identified. Heavy metals are contaminants at many of these Superfund sites. The average cost of cleanup a single-typical Superfund site currently stands at $20 million, and it is expected that the cost may escalate to $50 million within the next decade. Problems...
    Resource Type:
    Dissertation
    Full Text:
    : Robert D. Sproull More than 30,000 potential Superfund sites have been identified. Heavy

  • Periodate oxidation of cellulose - a complete kinetic study

    Creator:
    Chandan, Bhaskar Arjundev
    Abstract:
    The effect of over-oxidation on periodate oxidation of cellulose was studied. It was found that the over-oxidation process has a significant effect on the overall reaction. An integrated rate equation was formulated. The oxidation of internal glucose units is second-order overall, first order with respect to both periodate and cellulose;...
    Resource Type:
    Masters Thesis
    Full Text:
    Oxidation of Cellulose - A Complete Kinetic Study. Abstract Approved: Dr. Robert D. Sproull The effect

  • Temperature effects on surface energetic parameters evaluated at solid/liquid interfaces

    Creator:
    Lee, Euisang
    Abstract:
    Measurable surface parameters which may be related to the response evoked upon contact with biofluids have been suggested to provide direction for characterization, prediction, and ultimate control of biofluid behavior at interfaces. With respect to fouling of heat exchange equipment by biofluids, such properties may be useful for the development...
    Resource Type:
    Masters Thesis
    Full Text:
    . Robert D. Sforou 11 4 Redacted for Privacy r Joseph McGuire Measurable surface parameters which may be

  • The effect of pH and ionic strength on the adsorption of β-lactoglobulin onto well-characterized silicon

    Creator:
    Luey, Ja-Kael
    Abstract:
    The effect of pH and ionic strength on the equilibrium adsorptive behavior of β-lactoglobulin onto hydrophobic and hydrophilic silicon surfaces was studied using ellipsometry. Plots of amount adsorbed (μg protein/cm²) as a function of protein concentration (mg/ml) exhibited attainment of plateau values beyond a protein concentration of 0.250 mg/ml. At...
    Resource Type:
    Masters Thesis
    Full Text:
    to the following: Dr. Robert D. Sproull and Dr. Joseph McGuire not only for their help and

  • β-Lactoglobulin adsorption equilibrium at low- and high-energy surfaces

    Creator:
    Al-Malah, Kamal Issa Masoud
    Abstract:
    Ellipsometry was used to study the effects of surface energetics and temperature on the equilibrium adsorptive behavior exhibited by β-lactoglobulin. β-Lactoglobulin isotherms at 25, 37, and 55°C were constructed for this purpose. The surfaces of acrylic, polycarbonate, polyester, glass, and #304 stainless steel were contacted with protein solutions of varying...
    Resource Type:
    Masters Thesis
    Full Text:
    Redacted for Privacy Robert D. Sproull Ellipsometry was used to study the effects of surface energetics

  • Macroscopic model for apparent protein adsorption equillibrium at hydrophobic solid-water interfaces

    Creator:
    Al-Malah, Kamal Issa Masoud
    Resource Type:
    Dissertation
    Full Text:
    . Abstract Approved Joseph McGuire Robert D. Sp ull A predictive model was developed to describe apparent