COMPARISON OF MODELS ON THE PREDICTION OF BINARY EQUILIBRIUM DATA OF ACTIVATED CARBONS

Citation
A. Ahmadpour et al., COMPARISON OF MODELS ON THE PREDICTION OF BINARY EQUILIBRIUM DATA OF ACTIVATED CARBONS, AIChE journal, 44(3), 1998, pp. 740-752
Citations number
19
Categorie Soggetti
Engineering, Chemical
Journal title
ISSN journal
00011541
Volume
44
Issue
3
Year of publication
1998
Pages
740 - 752
Database
ISI
SICI code
0001-1541(1998)44:3<740:COMOTP>2.0.ZU;2-U
Abstract
A pure-component equilibrium adsorption isotherm of methane, ethane, p ropane, and CO2 at different temperatures and the binary adsorption da ta of methane with the other three species measured at 500 torr (66.7 kPa) and temperatures of 273 K and 303 K are presented and discussed T hese measurements were carried out on three nutshell-derived KOH chemi cally activated carbon (AC) samples and one commercial activated carbo n. The binary adsorption data of another commercial AC (Nuxit-al) from the literature are also used for comparison purposes. The single and binary experimental data were applied to six models: IAST, loading-dep endent isosteric heat, micropore-size distribution (MPSD), energy dist ribution (ED), extended Langmuir, and extended Sips models. The models were found to describe the experimental data of the commercial ACs wi th a reasonably good accuracy but only the model assuming isosteric he ar as a function of loading could reasonably predict the data of KOH c hemically activated carbons.