Open AccessMathematical and Experimental Modelling of Adsorption in Fixed Bed. I. Mathematical Model Development and Numerical Investigation of Nonisothermal Single Solute Adsorption
Author(s) -
Pavol Rajniak,
Ján Ilavský
Publication year - 1986
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/026361748600300404
Subject(s) - adsorption , thermodynamics , isothermal process , chemistry , mass transfer , adiabatic process , thermal diffusivity , heat transfer , dispersion (optics) , mathematical model , langmuir adsorption model , mechanics , chromatography , physics , quantum mechanics , optics
Mass and heat balances describing the process of a nonisothermal one-component adsorption in a fixed bed adsorber are formulated. The mathematical model permits simulation of bed performance under isothermal, adiabatic or nonisothermal-nonadiabatic conditions and incorporates heat and mass transport resistances within and around the adsorbent particle. Both heat and mass axial dispersion in the bed and moderate heat losses to the surroundings are considered. The adsorption equilibrium is described by a temperature-dependent Langmuir isotherm. The mathematical model is solved for different values of the physicochemical parameters. Numerical investigation results for different values of axial heat dispersion coefficient, effective pore diffusivity and overall heat transfer coefficient are compared with real adsorption data available from the literature.