Please use this identifier to cite or link to this item:
|Title:||Correction procedures for extra-column effects in dynamic column breakthrough experiments|
|Source:||Rajendran, A., Kariwala, V., Farooq, S. (2008-05). Correction procedures for extra-column effects in dynamic column breakthrough experiments. Chemical Engineering Science 63 (10) : 2696-2706. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ces.2008.02.023|
|Abstract:||Dynamic column breakthrough experiments, routinely used to complement adsorption and diffusion studies at the particle scale, constitute an important step in the development and verification of dynamic models for simulation of adsorption processes. Various parts of the experimental setup contribute to the retention time and band broadening of the experimental breakthrough curve. However, the effect of the extra-column contributions have to be properly accounted for in order to compare the experimental results with theoretical calculations. A common practice is to measure a blank response under the same flow rate, pressure and temperature conditions as the actual experiment by simply bypassing the adsorption column with a tube (or a connector) of negligible volume. This blank response is then subtracted point-by-point from the composite response (i.e., including the adsorption column) to account for extra-column contributions. The underlying assumption here is that blank and column responses are linearly additive, both in terms of mean residence time and band broadening. It is shown that this method of correction can, under certain operating conditions, lead to erroneous results. An alternative procedure based on linear regression is introduced and the improvements achieved by this method are illustrated using simulation examples. © 2008 Elsevier Ltd. All rights reserved.|
|Source Title:||Chemical Engineering Science|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 13, 2018
WEB OF SCIENCETM
checked on Jan 15, 2018
checked on Feb 11, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.