Eliminating Acetone in Air Using Absorption by Water

Consider a vapor stream composed of 90 mole% air and 10 mole% acetone. This stream is fed into an absorption column operating at 300 kPa and which has 20 stages. The solvent used to remove acetone from air is pure water. You can change the solvent to feed flow-rate ratio. This Demonstration calculates the vapor and liquid composition profiles inside the column as well as the temperature and molar flow rates. The calculation is rigorous since it solves the full MESH (mass, equilibrium, summation, and enthalpy) equation. It is possible to obtain a percent recovery of acetone equal to 100% since acetone is readily soluble in water. Comparison with Aspen HYSYS shows excellent agreement (HYSYS and Mathematica results are indicated by the open circles and solid squares, respectively).


  • [Snapshot]
  • [Snapshot]
  • [Snapshot]


Expressions for pure component molar vapor and liquid enthalpies were adapted from Aspen HYSYS.
The mixture is assumed to obey the modified Raoult's law with Antoine constants taken from Aspen HYSYS and activity coefficients predicted using the Wilson model [2].
[1] E. J. Henley and J. D. Seader, Equilibrium-Stage Separation Operations in Chemical Engineering, New York: Wiley, 1981.
[2] G. M. Wilson, "Vapor-Liquid Equilibrium XI: A New Expression for the Excess Free Energy of Mixing," Journal of the American Chemical Society, 86(2), 1964 pp. 127–130. doi:10.1021/ja01056a002.
    • Share:

Embed Interactive Demonstration New!

Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site. More details »

Files require Wolfram CDF Player or Mathematica.

Mathematica »
The #1 tool for creating Demonstrations
and anything technical.
Wolfram|Alpha »
Explore anything with the first
computational knowledge engine.
MathWorld »
The web's most extensive
mathematics resource.
Course Assistant Apps »
An app for every course—
right in the palm of your hand.
Wolfram Blog »
Read our views on math,
science, and technology.
Computable Document Format »
The format that makes Demonstrations
(and any information) easy to share and
interact with.
STEM Initiative »
Programs & resources for
educators, schools & students.
Computerbasedmath.org »
Join the initiative for modernizing
math education.
Step-by-Step Solutions »
Walk through homework problems one step at a time, with hints to help along the way.
Wolfram Problem Generator »
Unlimited random practice problems and answers with built-in step-by-step solutions. Practice online or make a printable study sheet.
Wolfram Language »
Knowledge-based programming for everyone.
Powered by Wolfram Mathematica © 2017 Wolfram Demonstrations Project & Contributors  |  Terms of Use  |  Privacy Policy  |  RSS Give us your feedback
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to Mathematica Player 7EX
I already have Mathematica Player or Mathematica 7+