- Author
-
Axley, J. W.
- Title
- Adsorption Modeling for Macroscopic Contaminant Dispersal Analysis.
- Coporate
- Massachusetts Institute of Technology, Cambridge
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
NIST GCR 90-573
May 1990
42 p.
- Distribution
- Available from National Technical Information Service
- Contract
- NIST-GRANT-43NANB919513
- Keywords
-
adsorption
|
contaminant dispersal
|
indoor air quality
|
modeling
- Abstract
- Two families of macroscopic adsorption models are formulated, based on fundamental principles of adsorption science and technology, that may be used for macroscopic (e.g., whole-building) contaminant dispersal analysis. The first family of adsorption models--the Equilibrium Adsorption (EA) Models--are based upon the simple requirement of equilibrium between adsorbent and room air. The second family--Boundary Layer Diffusion Controlled Adsorption (BLDC) Models--add to the equilibrium requirement a boundary layer model for diffusion of the adsorbate from the room air to the adsorbent surface. Two members of each of these families are explicitly discussed, one based on the linear adsorption isotherm model and the other on the Langmuir model. The linear variants of each family are applied to model the adsorption dynamics of formaldehyde in gypsum wall board and compared to measured data.