Environmental Engineering Reference
In-Depth Information
Maxwell-Stefan diffusion coeffi cient
The Maxwell-Stefan (or Darken-corrected, or collective) diffusion coeffi -
cient is the diffusion coeffi cient that relates transport of mass to a gradi-
ent in the chemical potential. This is a more fundamental way of
describing the diffusion coeffi cient and typically follows from a molecular
simulation. If we know how the concentration is related to the chemical
potential, we can easily convert this diffusion coeffi cient into the Fick dif-
fusion coeffi cient.
See also collective diffusion coeffi cient, Darken-corrected diffusion
coeffi cient, and Fick-diffusion coeffi cient.
McCabe-Thiele method
Graphical method developed by McCabe and Thiele to estimate the
number of (hypothetical) plates that are needed to achieve a separation
process.
MEA
See monoethanol amine.
Metal Organic Frameworks
Metal Organic Frameworks (MOFs) are metal/organic hybrid solids built
from organic linkers and nodes made out of inorganic metals (or metal-
containing clusters).
Mineral trapping
Dissolved CO 2 will react with minerals such as feldspars to liberate
cations (e.g., Mg 2 + , Fe 2 + , Ca 2 + ), and these cations then become available
to react with CO 3 2- in the aqueous phase to form carbonate minerals. As
carbonates are the thermodynamically most stable form of carbon,
mineral trapping is the fi nal fate of injected CO 2 .
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