The Effects of Operating Parameters on Nitrogen Isotopes Separation by Displacement Band Chromatography
- 1 October 1990
- journal article
- research article
- Published by Taylor & Francis in Separation Science and Technology
- Vol. 25 (13-15) , 1909-1918
- https://doi.org/10.1080/01496399008050432
Abstract
The separation of nitrogen isotopes by displacement band chromatography was studied under various operating conditions, using columns packed with sulfonated polystyrene-divinyl benzene, cation exchange resins. Average resin size was varied from 10 to 113 μm, operating temperature from 23 to 70°C, displacing solution concentration from 0.3 to 0.9 N, and superficial velocity from 1.0 to 2.0 cm/min. The maximum separative power for nitrogen isotopes was directly proportional to stage velocity (band velocity/height equivalent to a theoretical stage). The effects of operating parameters on the separative power were therefore evaluated in terms of stage velocity. The results indicate that operating temperature and resin particle size have greater effects on the maximum separative power than do displacing solution concentration and flow rate.Keywords
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