Adsorption of carbon dioxide, acetylene, ethane, and propylene on charcoal at near room temperatures

Laukhuf, Walden L. S.; Plank, Charles A.

doi:10.1021/je60040a016

Cited by 11 publications

(7 citation statements)

References 5 publications

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“…As shown in Figure 6, the order of adsorption affinity is 1,1,1-trichloroethane, trichloroethylene, and dichloromethane (except for 1,1,1trichloroethane and trichloroethylene at 363.15 K), and this result is identical with the order of the isosteric heat values at zero coverage for each adsorbate. Many investigators (Agarwal et al, 1988;Noll et al, 1989;Laukhuf et al, 1969) indicated that the potential theory is useful for adsorption equilibria of organic vapors on microporous materials such as activated carbon. The isotherms derived from the potential theory have found utility in interpreting adsorption by capillary condensation and pore filling (Yang, 1987).…”

Section: Resultsmentioning

confidence: 99%

“…As discussed by Noll et al (1989), for the nonpolar and weakly polar adsorbates, the adsorption interaction is strongly dependent on the polarizability of the molecules. Since the polarizability of a molecule is approximately proportional to the molar volume of the saturated liquid, the affinity coefficient can be expressed as (Noll et al, 1989;Laukhuf et al, 1969;Yang, 1987) where V ref 0 is the saturated liquid molar volume of the reference vapor. In this study, benzene vapor was chosen as the reference vapor since it has a polarity similar to those of the adsorbates (Noll et al, 1989).…”

Section: Theorymentioning

confidence: 99%

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Adsorption Equilibria of Chlorinated Organic Solvents onto Activated Carbon

Yun

Choi

Kim

1998

Ind. Eng. Chem. Res.

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Adsorption equilibria of dichloromethane, 1,1,1-trichloroethane, and trichloroethylene on activated carbon were obtained by a static volumetric technique. Isotherms were measured for the pure vapors in the temperature range from 283 to 363 K and pressures up to 60 kPa for dichloromethane, 16 kPa for 1,1,1-trichloroethane, and 7 kPa for trichloroethylene, respectively. The Toth and Dubinin−Radushkevich equations were used to correlate experimental isotherms. Thermodynamic properties such as the isosteric heat of adsorption and the Henry's constant were calculated. It was found that the values of isosteric heat of adsorption were varied with surface loading. Also, the Henry's constant showed that the order of adsorption affinity is 1,1,1-trichloroethane, trichloroethylene, and dichloromethane. By employing the Dubinin−Radushkevich equation, the limiting volume of the adsorbed space, which equals micropore volume, was determined, and its value was found to be approximately independent of adsorbates.

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Section: Resultsmentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

Adsorption Equilibria of Chlorinated Organic Solvents onto Activated Carbon

Yun

Choi

Kim

1998

Ind. Eng. Chem. Res.

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“…The adsorbent used was a commercially available heterogeneous microporous activated carbon (Type BPL, 6/16 mesh) manufactured by the Pittsburgh Chemical Company. This type of activated carbon has been used for adsorption studies by other investigators (Grant et al, 1962;Manes, 1964,1966;Meredith and Plank, 1967;Laukhuf and Plank, 1969). The "as received" carbon was crushed and sieved to 20/85 mesh before using.…”

Section: Methodsmentioning

confidence: 99%

Adsorption of Methane, Ethane, and Ethylene Gases and Their Binary and Ternary Mixtures and Carbon Dioxide on Activated Carbon at 212-301 K and Pressures to 35 Atmospheres

Reich¹,

Ziegler²,

Rogers³

1980

Ind. Eng. Chem. Proc. Des. Dev.

209

184

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Adsorption equilibria for methane, ethane, ethylene, and carbon dioxide and for mixtures of these hydrocarbons on activated carbon were measured volumetrically at 212.7, 260.2, and 301.4 K, at pressures up to about 35 atm, for binary gas-phase compositions of about 0.25, 0.50, and 0.75 mole fraction of the first component, and for ternary gas-phase compositions of about 0.60-0.20-0.20, 0.25-0.50-0.25, and 0.20-0.20-0.60 mole fraction of methane, ethane, and ethylene, respectively. A method is proposed for the prediction of multicomponent adsorption equilibria from pure gas adsorption data. This method is based on the Polanyi potential theory of adsorption. It is similar to the predictive method developed by Grant and Manes for binaries. A single correlation or characteristic curve was constructed for all the pure gas adsorption data. A characteristic curve based on all the mixture adsorption data was shown to be essentially superimposable on that of the pure components. This finding permitted a fair estimation of mixture adsorption data from

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“…The effect of micropores on heat of adsorption is estimated by comparing adsorptions of the same adsorbate on the adsorbents of identical chemical nature but of different surface structure. Comparison between isosteric heat of ethane on MSC-5A in this study and that on charcoal which is calculated from Laukhuf and Plank's data (6) in Figure 6 shows that adsorption heats in micropores are considerably higher. The distribution of the adsorption potential of Equation 8 is figured for ethane-MSC-5A and propane-MSC-5A systems in Figure 7.…”

Section: Resultsmentioning

confidence: 58%