Global ETD Search

1	Analysis of Real-Time Monitoring Of Trace Contaminants in a Pilot-Scale Treatment System and Calculation of UV Dose Using Hydrogen Peroxide Actinometry Bond, Daniel Alan January 2012 (has links) The use of two online sensors, the S::CAN and the FLD, was used to evaluate the treatment of synthetic wastewater by UV/H₂O₂ advanced oxidation. The UV dose and intensity for the flow through reactor was also determined using H₂O₂ actinometry. The total power of the lamps in the reactor was determined to be 139 W which, with the absorbance of the water, produced a UV dose of 39.4 mJ/cm². It was determined that the S::CAN was unable to differentiate between treatment of a particular water, however it could differentiate between different test waters. The FLD was very sensitive and was able to detect minute variations in treatment of the test water. Real-time UV dose Environmental Engineering Actinometry hydrogen peroxide
2	Development of Ultraviolet Taylor-Couette Reactor To Apply Non-Thermal Pasteurization On Milk Melebari, Mohammad Abdulhaleem 05 October 2012 (has links) The research developed a UV Taylor Couette reactor for disinfecting milk as a model opaque fluid. The principal of the reactor was to generate laminar vortices to support efficient mixing and homogenous UV photon distribution. The UV reactor parameters were optimized to generate laminar vortices that were stabilized by modification of the unit with baffles. A model was developed to predict the UV dose required to inactivate model microbes in milk. Through verification trials it was noted the predicted UV dose underestimated that required to support a 5 log cfu reduction of microbes. It was subsequently identified that the deviation from predicted values could be attributed to fat content that enhances the UV inactivation of microbes in milk with proteins providing protection to microbes. In conclusion, the UV Taylor Couette reactor has strong potential for disinfecting opaque fluids although matrix effects need to be considered when undertaking validation trials. Ultraviolet UV E.coli Non thermal Pasteurization Milk Fat Milk Taylor Couette reactor TC reactor Bacillus Salmonella D10 D value RED UV dose Collimated beam

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Analysis of Real-Time Monitoring Of Trace Contaminants in a Pilot-Scale Treatment System and Calculation of UV Dose Using Hydrogen Peroxide Actinometry

Development of Ultraviolet Taylor-Couette Reactor To Apply Non-Thermal Pasteurization On Milk