Rodrigues equation: Difference between revisions
Content deleted Content added
redirect to Van Deemter equation Tag: New redirect |
|||
| Line 1: | Line 1: | ||
#REDIRECT [[Van Deemter equation]] |
|||
The '''Rodrigues equation''' is an equation used in [[chromatography]] to describe the efficiency of a bed of permeable (large-pore) particles. It is thus an extension of [[Van Deemter's equation]]. It was developed by Alirio E. Rodrigues ''et al.''.<ref name="Rodrigues1997">{{cite journal | title = Permeable packings and perfusion chromatography in protein separation | journal = Journal of Chromatography B | author = Alirio E. Rodrigues | volume = 699 | issue = 1–2 | date = 10 October 1997 | pages = 47–61 | doi = 10.1016/S0378-4347(97)00197-7 }}</ref> |
|||
==Equation== |
|||
The equation is: |
|||
<math> HETP = A + \frac{B}{u} + C \cdot f( \lambda ) \cdot u </math> |
|||
Where |
|||
* ''HETP'' is the height equivalent to a [[theoretical plate]] |
|||
* ''A'' is the [[Eddy diffusion]] |
|||
* ''B'' is the longitudinal [[diffusion]] |
|||
* ''C'' is the resistance to [[mass transfer]] |
|||
* ''u'' is the [[Mass flow rate|flow rate]] |
|||
* <math> f( \lambda ) = \frac{3}{ \lambda } \left [ \frac{1}{\tanh( \lambda )} - \frac{1}{ \lambda } \right ] </math> |
|||
* <math>\lambda</math> is the intraparticular [[Péclet number]] |
|||
==References== |
|||
{{reflist}} |
|||
[[Category:Chromatography]] |
|||
[[Category:Equations]] |
|||
{{analytical-chem-stub}} |
|||
{{Chromatography-stub}} |
|||
Latest revision as of 02:16, 25 March 2019
Redirect to: