1974
DOI: 10.1002/aic.690200512
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Fixed bed desorption behavior of gases with nonlinear equilibria: Part II. Dilute, multicomponent, isothermal systems

Abstract: Generalized depletion curves for desorption (and corresponding breakthrough curves for adsorption) were calculated for systems characterized by the Langmuir-type multicomponent equilibrium equation and controlled by the film type rate model. In contrast with adsorption where the nonkey (or less strongly adsorbed) component curves display overshoots above feed concentration, in desorption the key component depletion curves exhibit the instabilities in the form of inflections and curvatures. As in the one compon… Show more

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Cited by 23 publications
(12 citation statements)
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“…In Figure 7, the effluent concentration profile shows a peak, indicating a concentration higher than the feed concentration (Cdl/Col > 1). Similar observations were reported by Helfferich and Klein (1970) and have been found by others including Zwiebel et al (1974), Hsieh et a]. (1977), Klaus et al (1977), Balzli et al (1978), and Sung et al (1979).…”
Section: Results For a 41-cm Adsorbersupporting
confidence: 89%
See 1 more Smart Citation
“…In Figure 7, the effluent concentration profile shows a peak, indicating a concentration higher than the feed concentration (Cdl/Col > 1). Similar observations were reported by Helfferich and Klein (1970) and have been found by others including Zwiebel et al (1974), Hsieh et a]. (1977), Klaus et al (1977), Balzli et al (1978), and Sung et al (1979).…”
Section: Results For a 41-cm Adsorbersupporting
confidence: 89%
“…The behavior of breakthrough profiles in a two-component system is entirely different from that of theone-component system. The peak in Figure 7 (Zwiebel et al, 1974;Balzli et al, 1978;and Sung et al, 1979) arises from competitive adsorption between the two sorbates. In earlier stages of adsorption, both butanol (Cl) and t-amyl alcohol (C,) are adsorbed on the activated carbon.…”
Section: Results For a 41-cm Adsorbermentioning
confidence: 98%
“…They become more dispersed as R becomes smaller. A similar effect was observed by Zwiebel et al (1972). Under highly favorable equilibrium for a fixed value of Nf.…”
Section: Resultssupporting
confidence: 80%
“…For example, Zwiebel et al (1972) computed breakthrough and elution curves where fluid film mass transfer is the rate-controlling step.…”
mentioning
confidence: 99%
“…Unfortunately, no experimental data were provided for comparing the calculation results. Zwiebel et al (1974) presented the first generalized depletion data for multicomponent systems with nonlinear isotherms. A mathematical model was also presented with assumptions of dilute gases, isothermal operation, constant pressure, a fluid film mass transfer mechanism, and Langmuir-type isotherms.…”
Section: Previous Workmentioning
confidence: 99%