Adsorption
This feature is only available in a limited set of add-on products. See
http://www.comsol.com/products/specifications/
for more details on availability.
Use this node to model adsorption of the fluid phase species onto the porous media surface. It is available as a subnode to the
Porous Media Transport Properties
and the
Partially Saturated Porous Media
nodes.
Select a
Sorption type
—
Langmuir
(the default),
Freundlich
, or
User defined
to specify how to compute
c
P
, the amount of species sorbed to the solid phase (moles per unit dry weight of the solid):
•
For
Langmuir
:
Enter a
Langmuir constant
k
L,c
(SI unit: m
3
/mol) and an
Adsorption maximum
c
p,max,c
(SI unit: mol/kg):
•
For
Freundlich
:
Enter a
Freundlich constant
k
F,c
(SI unit: mol/kg), a
Freundlich exponent
N
F,c
(dimensionless), and a
Reference concentration
c
ref,c
(SI unit: mol/m
3
).
•
For
User defined
:
Enter an
Adsorption isotherm
k
P,c
(SI unit: m
3
/kg).
For more information, see
Adsorption
in the theory section.
Further Reading
See the theory chapter in the section .