7 September 2017 Uranyl adsorption kinetics within silica gel: dependence on flow velocity and concentration
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Abstract
Trace quantities of a uranyl dissolved in water were measured using a simple optical method. A dilute solution of uranium nitrate dissolved in water was forced through nanoporous silica gel at fixed and controlled water flow rates. The uranyl ions deposited and accumulated within the silica gel and the uranyl fluorescence within the silica gel was monitored as a function of time using a light emitting diode as the excitation source and a photomultiplier tube detector. It was shown that the response time of the fluorescence output signal at a particular volumetric flow rate or average liquid velocity through the silica gel can be used to quantify the concentration of uranium in water. The response time as a function of concentration decreased with increasing flow velocity.
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Brandon M. Dodd, Gary Tepper, "Uranyl adsorption kinetics within silica gel: dependence on flow velocity and concentration", Proc. SPIE 10393, Radiation Detectors in Medicine, Industry, and National Security XVIII, 1039303 (7 September 2017); doi: 10.1117/12.2274807; https://doi.org/10.1117/12.2274807
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