FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W36408837> ?p ?o ?g. }

• W36408837 abstract "Multicomponent adsorption equilibrium and kinetics of gases in heterogeneous activated carbon are theoretically studied in this thesis. To modify the vacancy solution model for adsorption, a new adsorption isotherm is developed on the basis of a mass-action law. It inherits the advantage of the original vacancy solution theory (VST) approach in that the calculation of multicomponent equilibria is in the same framework of the single component case. In addition, the new isotherm maintains the thermodynamic consistency for multicomponent formulation. The heterogeneity of activated carbon is considered in terms of its structural heterogeneity, which is expressed by a pore size distribution function. The heterogeneity of adsorbent is introduced through the fluid-solid interaction potential energy, which is represented by Steele's 10-4-3 potential. The mathematical model for adsorption kinetics on activated carbon is developed for both single and multicomponent adsorbate. The transport process in the bidisperse carbon is described by the simultaneous diffusion in the macropore and micropore phases. The gaseous adsorptives diffuse in the macropore through the molecule-molecule collision and the molecule-wall collision, which are represented by the molecular and Knudsen diffusivities, respectively. The micropore diffusion is conducted by the hopping of the adsorbate molecules on the adsorption site. The driving force for the micropore diffusion is the chemical potential gradient in the adsorbed phase. The concentration gradient in the microparticle is assumed to be negligible, and the mass balance equations for both phases are developed over the particle scale. The diffusions in the gaseous and adsorbate phases are correlated by a general expression for mass exchange flux between these two phases, which can be applied to any arbitrary isotherm. In considering the connectivity of pore network in activated carbon, the effective medium theory (EMT) approach is applied to estimate the effective adsorbate phase diffusivity for single component adsorption. On the development of the predictive model for multicomponent adsorption kinetics on activated carbon, the generalized Maxwell-Stefan (MS) formulation is applied to estimate the binary diffusivities in both the macropore and the micropore phases. The expression for the phenomenological diffusivities can account for the diffusive and viscous contribution unambiguously in both phases. The cross-term of the binary adsorbate phase diffusivity is represented by the semi-empirical Vignes correlation, which explicitly relates the diffusivity to the surface coverage and the self diffusivity of each species. In evaluation of the theoretical model, a wide range of published experimental data has been applied to compare the model calculation with the experimental results. In the application of the mathematical model to the literature data, the isotherm parameters are first extracted from fitting adsorption equilibrium data of single component. The information related to the pore structure of activated carbon is also obtained from this process. The binary adsorption equilibria on the corresponding adsorbents are then 'predicted by the proposed model. The azeotropy phenomena on homogeneous porous adsorbents can be theoretically predicted by the modified vacancy solution model, exhibiting the non-ideality due to adsorbate size differences in binary system. The binary adsorption equilibria on various activated carbons can be accurately predicted for ambient bulk pressures, supporting the reliability of the fitting parameters and the applicability of the equilibrium model. The deviation of model prediction at elevated pressures may be due to the model assumption regarding the porous structure of carbon. The adsorbate-related kinetic parameters are extracted from fitting the single component kinetic data on two different carbons. The adsorption kinetics of binary adsorbates is predicted using the fitting parameters. The present model can successfully predict the co-adsorption, co-desorption and displacement ofC2H6 and C3H8.n" @default.
• W36408837 created "2016-06-24" @default.
• W36408837 creator A5029336827 @default.
• W36408837 date "2002-01-01" @default.
• W36408837 modified "2023-09-23" @default.
• W36408837 title "Multicomponent adsorption in heterogeneous microporous solids" @default.
• W36408837 hasPublicationYear "2002" @default.
• W36408837 type Work @default.
• W36408837 sameAs 36408837 @default.
• W36408837 citedByCount "0" @default.
• W36408837 crossrefType "journal-article" @default.
• W36408837 hasAuthorship W36408837A5029336827 @default.
• W36408837 hasConcept C104779481 @default.
• W36408837 hasConcept C111368507 @default.
• W36408837 hasConcept C114221277 @default.
• W36408837 hasConcept C121332964 @default.
• W36408837 hasConcept C127313418 @default.
• W36408837 hasConcept C140205800 @default.
• W36408837 hasConcept C147789679 @default.
• W36408837 hasConcept C150394285 @default.
• W36408837 hasConcept C159985019 @default.
• W36408837 hasConcept C161790260 @default.
• W36408837 hasConcept C162711632 @default.
• W36408837 hasConcept C165830589 @default.
• W36408837 hasConcept C178790620 @default.
• W36408837 hasConcept C185592680 @default.
• W36408837 hasConcept C192562407 @default.
• W36408837 hasConcept C2778517922 @default.
• W36408837 hasConcept C2779647737 @default.
• W36408837 hasConcept C32909587 @default.
• W36408837 hasConcept C57924286 @default.
• W36408837 hasConcept C58445606 @default.
• W36408837 hasConcept C6648577 @default.
• W36408837 hasConcept C69357855 @default.
• W36408837 hasConcept C8010536 @default.
• W36408837 hasConcept C82776694 @default.
• W36408837 hasConcept C86381522 @default.
• W36408837 hasConcept C97355855 @default.
• W36408837 hasConceptScore W36408837C104779481 @default.
• W36408837 hasConceptScore W36408837C111368507 @default.
• W36408837 hasConceptScore W36408837C114221277 @default.
• W36408837 hasConceptScore W36408837C121332964 @default.
• W36408837 hasConceptScore W36408837C127313418 @default.
• W36408837 hasConceptScore W36408837C140205800 @default.
• W36408837 hasConceptScore W36408837C147789679 @default.
• W36408837 hasConceptScore W36408837C150394285 @default.
• W36408837 hasConceptScore W36408837C159985019 @default.
• W36408837 hasConceptScore W36408837C161790260 @default.
• W36408837 hasConceptScore W36408837C162711632 @default.
• W36408837 hasConceptScore W36408837C165830589 @default.
• W36408837 hasConceptScore W36408837C178790620 @default.
• W36408837 hasConceptScore W36408837C185592680 @default.
• W36408837 hasConceptScore W36408837C192562407 @default.
• W36408837 hasConceptScore W36408837C2778517922 @default.
• W36408837 hasConceptScore W36408837C2779647737 @default.
• W36408837 hasConceptScore W36408837C32909587 @default.
• W36408837 hasConceptScore W36408837C57924286 @default.
• W36408837 hasConceptScore W36408837C58445606 @default.
• W36408837 hasConceptScore W36408837C6648577 @default.
• W36408837 hasConceptScore W36408837C69357855 @default.
• W36408837 hasConceptScore W36408837C8010536 @default.
• W36408837 hasConceptScore W36408837C82776694 @default.
• W36408837 hasConceptScore W36408837C86381522 @default.
• W36408837 hasConceptScore W36408837C97355855 @default.
• W36408837 hasLocation W364088371 @default.
• W36408837 hasOpenAccess W36408837 @default.
• W36408837 hasPrimaryLocation W364088371 @default.
• W36408837 hasRelatedWork W1040794774 @default.
• W36408837 hasRelatedWork W1515228839 @default.
• W36408837 hasRelatedWork W1581852123 @default.
• W36408837 hasRelatedWork W1836203760 @default.
• W36408837 hasRelatedWork W1980013323 @default.
• W36408837 hasRelatedWork W1981543189 @default.
• W36408837 hasRelatedWork W1987666072 @default.
• W36408837 hasRelatedWork W2003679201 @default.
• W36408837 hasRelatedWork W2009182848 @default.
• W36408837 hasRelatedWork W2011865379 @default.
• W36408837 hasRelatedWork W2012375957 @default.
• W36408837 hasRelatedWork W2039897584 @default.
• W36408837 hasRelatedWork W2077780622 @default.
• W36408837 hasRelatedWork W2078325461 @default.
• W36408837 hasRelatedWork W2394103537 @default.
• W36408837 hasRelatedWork W2588532794 @default.
• W36408837 hasRelatedWork W2726422992 @default.
• W36408837 hasRelatedWork W2900789354 @default.
• W36408837 hasRelatedWork W2932851423 @default.
• W36408837 hasRelatedWork W3102863366 @default.
• W36408837 isParatext "false" @default.
• W36408837 isRetracted "false" @default.
• W36408837 magId "36408837" @default.
• W36408837 workType "article" @default.