University of Colorado at Boulder
Angela R. Bielefeldt, PhD, PE 
  • Point-of-Use drinking water treatment with ceramic water filters
  • Surfactant-aided bioremediation of soil contaminated with pentachlorophenol (PCP)

  • Engineering education, including:
    • sustainability
    • service-learning
    • gender differences in interests and attitudes
    • first year students and retention
  • In-Situ Bioremediation of dense non-aqueous phase liquid (DNAPL) mixtures, of particular interest:
    • Coal tar and polyaromatic hydrocarbons (PAHs)
    • Polychlorinated biphenyls (PCBs)
    • Chlorinated solvents (PCE, TCE)
  • Microbial Induced Concrete Corrosion (MICC)
  • Effect of biodegradation of jet fuel and de-icing compounds on the hydraulic characteristics of saturated porous media
  • Microbial clean-up of chromium contaminated soil
  • Bioclogging
  • Biodegradation kinetics of toxic organic compounds and compound mixtures
    • Primarily aerobic biodegradation, but also multiple redox conditions
    • Modeling biodegradation rates, including cometabolism and competitive inhibition
    • Specifically: trichloroethene (TCE), dichloroethene (DCE), benzene, toluene, ethylbenzene, xylene (BTEX), phenol, naphthalene, PCBs, chlorobenzene, pentachlorophenol
  • Biological gas treatment
  • How microbial processes impact the fate of contaminants in the subsurface
  • Combining mass transfer, chemical properties, and bacteria to remediate groundwater, soil, and air
  • Inventors: A.R. Bielefeldt, H.D. Stensel, S.E. Strand, and R.E. Herwig.
    Invention: Degradation of Environmental Toxins by a Filamentous Bacterium.
    Patent Issued: Feb. 1999.
    US. Patent No. 5,874,291.
  • Inventors: A.R. Bielefeldt and H.D. Stensel.
    Invention: A Device and Method for Removal of Gas Contaminants Through a Shallow Sparged Bioreactor.
    Patent Issued: Nov. 1999.
    US. Patent No. 5,985,649.