Modeling
Competitive Adsorption of Mixtures of Volatile
Organic Compounds in a Fixed-Bed of Beaded Activated Carbon
Dereje
Tamiru Tefera
Zaher Hashisho
John H. Philips
James
E. Anderson
Mark Nichols
10.1021/es404667f.s001
https://acs.figshare.com/articles/journal_contribution/Modeling_Competitive_Adsorption_of_Mixtures_of_Volatile_Organic_Compounds_in_a_Fixed_Bed_of_Beaded_Activated_Carbon/2299987
A two-dimensional
mathematical model was developed to study competitive
adsorption of <i>n</i>-component mixtures in a fixed-bed
adsorber. The model consists of an isotherm equation to predict adsorption
equilibria of <i>n</i>-component volatile organic compounds
(VOCs) mixture from single component isotherm data, and a dynamic
adsorption model, the macroscopic mass, energy and momentum conservation
equations, to simulate the competitive adsorption of the <i>n</i>-components onto a fixed-bed of adsorbent. The model was validated
with experimentally measured data of competitive adsorption of binary
and eight-component VOCs mixtures onto beaded activated carbon (BAC).
The mean relative absolute error (MRAE) was used to compare the modeled
and measured breakthrough profiles as well as the amounts of adsorbates
adsorbed. For the binary and eight-component mixtures, the MRAE of
the breakthrough profiles was 13 and 12%, respectively, whereas, the
MRAE of the adsorbed amounts was 1 and 2%, respectively. These data
show that the model provides accurate prediction of competitive adsorption
of multicomponent VOCs mixtures and the competitive adsorption isotherm
equation is able to accurately predict equilibrium adsorption of VOCs
mixtures.
2014-05-06 00:00:00
BAC
Beaded Activated CarbonA
Volatile Organic Compounds
momentum conservation equations
component isotherm data
multicomponent VOCs mixtures
adsorption isotherm equation
MRAE
breakthrough profiles
model