Correlation between adsorption of benzene from dilute aqueous solutions and benzene vapor adsorption on microporous active carbons

Jaroniec, Mietek; Choma, J.; Burakiewicz-Mortka, W.

doi:10.1016/0008-6223(91)90051-j

Cited by 10 publications

(10 citation statements)

References 12 publications

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“…At the other end of the pore distribution, the narrow microporosity (below 0.7 nm) displays a total volume of ~0.6 cm 3 /g. This is an important parameter since, according to some authors [7,8], the adsorption of benzene and toluene at low concentration in gas phase, which should be A c c e p t e d M a n u s c r i p t similar to that in diluted solutions [10], is performed by the narrow microporosity. If this is the case for the material developed here, then, according to Gurvich's rule [34] the maximum amount of adsorbed benzene can be expected to be around 540 mg/g, similar to that of toluene.…”

Section: Kinetic Analysis and Equilibrium Adsorption Syringe-like Admentioning

confidence: 99%

“…Adsorption in liquid phase may follow a similar pattern to that in gas phase. Jaroniec et al [10] have proved that the capacity of a given material to adsorb benzene is similar in diluted gas streams and in diluted solutions. It still remains to be proved whether the behaviour of adsorbents under saturated conditions is also similar for both phases (and this constitutes a secondary goal of the present work).…”

Section: Introductionmentioning

confidence: 99%

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High performance activated carbon for benzene/toluene adsorption from industrial wastewater

Asenjo

Álvarez

Granda

et al. 2011

Journal of Hazardous Materials

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A coal-tar-derived mesophase was chemically activated to produce a high surface area (~3200 m(2)/g) carbon with a porosity made up of both micropores and mesopores. Its adsorption capacities were found to be among the highest ever reported in literature, reaching values of 860 mg/g and 1200 mg/g for the adsorption of benzene and toluene, respectively, and 1200 mg/g for the combined adsorption of benzene and toluene from an industrial wastewater. Such high values imply that the entire pore system, including the mesopore fraction, is involved in the adsorption process. The almost complete pore filling is thought to be due to the high relative concentrations of the tested solutions, resulting from the low saturation concentration values for benzene and toluene, which were obtained by fitting the adsorption data to the BET equation in liquid phase. The kinetics of adsorption in the batch experiments which were conducted in a syringe-like adsorption chamber was observed to proceed in accordance with the pseudo-second order kinetic model. The combined presence of micropores and mesopores in the material is thought to be the key to the high kinetic performance, which was outstanding in a comparison with other porous materials reported in the literature.

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Section: Kinetic Analysis and Equilibrium Adsorption Syringe-like Admentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High performance activated carbon for benzene/toluene adsorption from industrial wastewater

Asenjo

Álvarez

Granda

et al. 2011

Journal of Hazardous Materials

View full text Add to dashboard Cite

show abstract

“…[7], the modified model in Eq. [6] is used, together with the Steele (19) 10-4-3 potential model for a flat surface.…”

Section: Characteristic Energymentioning

confidence: 99%

“…[2]) with the DR equation as the local adsorption equation, [7] where A and β E o follow Eqs. [4] and [6], respectively.…”

Section: Modified Pore Filling Isothermmentioning

confidence: 99%

“…The pore structure of activated carbon can be determined by several methods such as mercury porosimetry, scanning electron microscopy, and gas and liquid phase adsorption, among which the most widely used is gas adsorption (1)(2)(3)(4)(5)(6). Only a few investigators have used liquid phase adsorption isotherms for characterization of activated carbon (7)(8)(9), and their results indicate that characterization of activated carbon using liquid phase adsorption isotherms may be as attractive as gas or vapor phase adsorption.…”

Section: Introductionmentioning

confidence: 98%

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The Use of Liquid Phase Adsorption Isotherms for Characterization of Activated Carbons

Ismadji¹,

Bhatia²

2001

Journal of Colloid and Interface Science

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Chapter 14. Characterization of geometrical and energetic heterogeneities of active carbons by using sorption measurements

Jaroniec

Choma²

1997

Studies in Surface Science and Catalysis

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Correlation between adsorption of benzene from dilute aqueous solutions and benzene vapor adsorption on microporous active carbons

Cited by 10 publications

References 12 publications

High performance activated carbon for benzene/toluene adsorption from industrial wastewater

High performance activated carbon for benzene/toluene adsorption from industrial wastewater

The Use of Liquid Phase Adsorption Isotherms for Characterization of Activated Carbons

Chapter 14. Characterization of geometrical and energetic heterogeneities of active carbons by using sorption measurements

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