M.S. Thesis Presentation by Austin E. Rocker
Monday, November 26, 2001

(Dr. John Valentine, advisor)

"Modeling Atmospheric Radon Removal Rate by Naphthenic Oil"


An investigation was conducted on the rate of absorption gas by naphthenic oil.  The investigation involved the dilution of radon gas to three specific levels in the range from four to two hundred pCi/L.  Each sample of radon gas was allowed to come to equilibrium with its progenies after being added to a gas concentration system that relied on a packed bed type device to allow interaction of the oil and gas.  The intermixing of the oil and gas were tested at two levels each by varying the rate at which each flowed through the system.  Measurement of the radon gas level in the system was accomplished using a zinc sulfide scintillator coupled to a photo multiplier tube.  The rate at which the radon gas was absorbed by the oil was determined using regression analysis and making appropriate corrections for the decay of the progenies that were detected by the system.  The resulting data allowed for a balanced ANOVA to be conducted to determine the main factor effects for the initial concentration of the gas, the gas flow rate, and the oil flow rate.  A model was then determined for the absorption rate of radon gas into naphthenic oil as a function of initial concentration, gas flow rate, and oil flow rate.