ANYL 40 |
| The design and operation of a new mass transport technique is presented. The separation technique termed as the “hydrodynamic diffusion system” (HDS) is adapted for analytical laboratory analysis as well as industrial scale separation and purification. A separation advantage gained using the HDS is higher flux of probe molecules diffusing across the separation membrane compared to the static two-chamber method where stirring is applied. On the other hand, the detection advantage of the HDS opens the possibility to study mass transport properties of a large variety of molecules using different types of ultra thin membranes under different physical conditions. The detection mechanism is analogous to the hydrodynamic rotating disc electrode (RDE) voltammetry. Therefore, the HDS can be a potential alternative to classical methods that study mass transport such as the two-chamber (TC) methods (i.e. pressurized, agitated, electrodialysis, and reverse osmosis), electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and rotating disc electrode (RDE) voltammetry. However, it is expected to offer greater capabilities to serve scientist and engineers in the analytical, separation and filtration industry. For this purpose, a theoretical analysis on the hydrodynamic flux is derived and compared to experimental data. Plots of the molecular flux across a 10 μm thick Nucleopore® membarane of pore size of 0.1 μm for four different molecules against the rotation rate are discussed. |
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General Papers
7:00 PM-9:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster
Division of Analytical Chemistry |