Alírio Rodrigues

The Rodrigues equation is an extension of the Van Deemter equation used to describe the efficiency of a bed of permeable (large-pore) particles.[4]

The equation is:

${\displaystyle HETP=A+{\frac {B}{u}}+C\cdot f(\lambda )\cdot u}$

where HETP is the height equivalent theoretical plate

${\displaystyle f(\lambda )={\frac {3}{\lambda }}\left[{\frac {1}{\tanh(\lambda )}}-{\frac {1}{\lambda }}\right]}$

and ${\displaystyle \lambda }$ is the intraparticular Péclet number.

• Perfume Engineering: Design, Performance and Classification, (2013) Butterworth-Heinemann ; ISBN 978-0080993997
• Simulated Moving Bed Technology, (2015) Butterworth-Heinemann ISBN 9780128020241

• Alírio Rodrigues' publications
• Alírio Rodrigues' page at the Laboratory of Separation and Reaction Engineering, University of Porto