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Response surface modelling of water vapor adsorption in fixed bed of impregnated alumina grains

Domenii publicaţii > Stiinte ingineresti + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: M.S. Secula, I. Solomon, M. Spiridon, S. Petrescu

Editorial: Revista de Chimie -Bucharest, 62(2), p.1175-1179, 2011.


The experimental design methodology was applied for response surface modelling (RSM) of a packed-bed based pilot-scaled set-up for water vapour adsorption on impregnated alumina grains. Experimental breakthrough cuwes were determined. The variables considered were the ratio between the volume of adsorbent bed and air now rate (residence time), a geometrical parameter, the ratio between adsorption column diameter and the bed height, and air relative humidity respectively. The Central Composite Design (CCD) allowed developing an empirical model as a functional relationship between breakthrough time and the considered independent variables. It was found that all considered factors have an important effect on the response. The suggested mathematical model was validated using experimental data other than those employed in the experimental design. The predicted values are in good agreement with experimental data. The present paper shows that RSM can be also employed to predict dynamic adsorption processes.

Cuvinte cheie: adsorbție, program central compozițional, strat fix, aluminã impregnatã, vapori de apã // adsorption, Central Composite Design, fixed bed, impregnated alumina, water vapour