Abstract
Adsorption is of great importance. The unique advantage of adsorption over other separation methods is the higher selectivity that can be achieved by adsorbents. In addition, adsorption phenomena play a vital role in many solid-state reactions and biological mechanisms. In this work, the adsorption process of CO 2 on the clinoptilolite (Skorynskoho field, Transcarpathian region, Ukraine) and SO 2 , NO, and CO 2 adsorption on K 2 CO 3 -modified – γ -alumina in a fixed-bed reactor were theoretical studied and simulated by computer-mathematic methods. The developed mathematical model based on the mass balance in gas and solid phase, the experimental saturation capacities, considering the activity of the adsorbent with respect to the gas by variable coefficients. The model presented by a normal linear system of differential equations with variable coefficients, it was solved by Taylor collocation method. The simulation shows that the data obtained by theoretical study are in agreement with data obtained in the simulation. According to Fisher Criterion the mathematic model adequate in 90 % for modified zeolite and in 75 % for natural zeolite, it can be explained by unordered structure of the natural zeolite. It follows that the offered model adequately describes the dynamics simultaneous adsorption of gases over zeolites. Thus even with a large number of simplifications and assumptions, it is possible to construct efficient mathematical model that can be used in exhaust system. The results indicate that, there is great sense to conduct further researches and simulations to reach the industrial level.
Highlights
The fixed bed model is derived from the mass balance in gas and solid phase and from the experimental saturation capacities, with the following assumptions: no temperature gradients and no concentration gradients in a bed section perpendicular to gas flow direction, the regime is isothermal; the temperature gradients are absent; the diffusion of species is negligible, there is no deactivation of the adsorbent during the experiments [11] considering the activity of the adsorbent with respect to the gas by variable coefficients
The model is adequate in 90 % of cases for the modified zeolite and in 75 % of cases for the natural zeolite
The developed mathematical model based on the mass balance in gas and solid phase, the experimental saturation capacities, considering the activity of the adsorbent with respect to the gas by variable coefficients
Summary
The unique advantage of adsorption over other separation methods is the higher selectivity that can be achieved by adsorbents. There are different adsorbents being used in industry such as Active Carbon, S. For an adsorption process to be developed on a commercial scale requires the availability of a suitable adsorbent in tonnage quantities at economic cost. Trans Carpathian region, Ukraine rich in natural zeolites such as Clinoptilolite [1]. The pur pose of this work is theoretical study of the adsorption of harmful gases on different adsorbents and simulation these processes in order to conduct further experiments and to reach the industrial level. When dealing with complex systems, Laplace transform method requires a huge number of algebraic operations and becomes almost unusable
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Eastern-European Journal of Enterprise Technologies
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
