Mass Transfer in VOC Adsorption on Zeolite:  Experimental and Theoretical Breakthrough Curves

Brosillon, Stéphan; Manero, Marie-Hélène; Foussard, Jean-Noël

doi:10.1021/es010017x

Cited by 129 publications

(67 citation statements)

References 16 publications

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“…Furthermore, no studies on removing NO 2 and VOCs at the indoor environment with low concentration and high flow have been carried out in the world. Considering all these factors, it might be easier to apply the dry type adsorption method using activated carbon to subway stations since the adsorbent is economical and has a porous surface (Brosillon et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Efficiency Evaluation of Adsorbents for the Removal of VOC and NO2 in an Underground Subway Station

Son¹,

Kang²,

Chung³

et al. 2011

Asian J. Atmos. Environ

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Adsorbent combination studies have been carried out to remove nitrogen dioxide (NO 2 ) and volatile organic compounds (VOCs: BTEX) out of a subway environment characterized by high flow and low concentration. Optimal conditions for the high removal efficiency of the concerned target compounds were obtained through testing a series of control factors such as adsorbent sorts, thicknesses, and superficial velocity. It was found that the efficiencies increased as the specific surface area of activated carbon and its thickness increased, and external void fraction decreased. Furthermore, mixed activated carbon with granular and constructed contents was extensively tested to reduce pressure drop through the carbon bed. It was found that the performance of higher contents of granular activated carbon was better than that of higher contents of the constructed carbon. When the mixed carbon was applied to the subway ventilation system in order to eliminate NO 2 and VOC simultaneously, the removal efficiencies were found to be 75% and 85%, respectively.

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Section: Introductionmentioning

confidence: 99%

Efficiency Evaluation of Adsorbents for the Removal of VOC and NO2 in an Underground Subway Station

Son¹,

Kang²,

Chung³

et al. 2011

Asian J. Atmos. Environ

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“…Batch adsorption isotherms were performed using the bottle point method, as described elsewhere (Brosillon et al, 2001). A schematic diagram of the experimental system used to determine the adsorption performance was represented in Figure 1.…”

Section: Adsorption Equilibrium Experimentsmentioning

confidence: 99%

Coupling of Solvent Extraction and Ultrasonic Waves for Regeneration of Spent Activated Carbon after Treatment of Polluted Air with Toluene Vapor

Mohamed

Shetaya

El-Mekawy

et al. 2017

JAB

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A batch process was used to evaluate the potential of regeneration of spent activated carbon (AC) by solvent extraction technique with synergetic to ultra-sonication. Experiments were undertaken as a function of the initial concentration of toluene. Freundlich and Langmuir models were used to study the adsorption isotherms and the data well fitted the Langmuir expression. The maximum adsorption capacities of toluene were found to be 0.108 µg/g activated carbon for Type-I Langmuir. Extraction of the used AC by both methanol solvent and ultrasonic radiation yielded up to 95% reactivation of the spent AC in the first run. Nearly up to 88 % recovery of activity could be achieved after further regeneration and reusing of the spent AC. The results indicate that the coupling of solvent extraction with ultrasonic waves in the AC treatment is comparable and perhaps superior to the conventional regeneration techniques in many cases. This is mainly due to the single step process applied which is less energy consuming; in addition to the nearly comprehensive recovery of the adsorptive capacity of spent AC.

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“…Several complex theoretical models have been proposed in the literature (Tien 1994;Brosillon et al 2001;Malek and Farooq 1997;Delage et al 2000;Pre et al 2002;Sircar and Hufton 2000) for simulating breakthrough curves. In this paper, the LDF model [equation (3)] linked to the mass balance in a portion of the bed [equation (2)] and the Langmuir model [equation (9)] have been applied for describing the equilibrium experimental data.…”

Section: Modelling Of Breakthrough Curvesmentioning

confidence: 99%

“…In this paper, the LDF model [equation (3)] linked to the mass balance in a portion of the bed [equation (2)] and the Langmuir model [equation (9)] have been applied for describing the equilibrium experimental data. The LDF model was chosen because it has physical consistency and also because of its simplicity and accuracy in reproducing the adsorption of organic molecules onto different materials, both organic (Tien 1994) and inorganic (Brosillon et al 2001).…”

Section: Modelling Of Breakthrough Curvesmentioning

confidence: 99%

Modelling the Breakthrough Curves Obtained from the Adsorption of Propene onto Microporous Inorganic Solids

Puértolas

López

Navarro

et al. 2010

Adsorption Science & Technology

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ABSTRACT:The modelling of breakthrough curves obtained in the adsorption of propene as a model compound onto different inorganic solids is described. All the runs were performed in a fixed bed at atmospheric pressure, employing a process temperature of 30 ºC and propene concentrations in the range 0.0022-0.0222 mol/Nm 3 . The experimental conditions were therefore similar to those observed in the initial flue gases of cold start engines. The work described was mainly focused on the study of the influence of the adsorbent characteristics (composition, porous structure and surface area) on the kinetics of the adsorption process. The equilibrium adsorption values were initially determined from the breakthrough curves and satisfactorily fitted by the Langmuir isotherm model. These values were then used together with experimental breakthrough curves to analyse the kinetic expressions obtained applying the Linear Driving Force (LDF) model to the dynamic adsorption process. Values of the masstransfer coefficient, surface and effective diffusion coefficients of propene have been calculated and are reported.

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Mass Transfer in VOC Adsorption on Zeolite: Experimental and Theoretical Breakthrough Curves

Cited by 129 publications

References 16 publications

Efficiency Evaluation of Adsorbents for the Removal of VOC and NO2 in an Underground Subway Station

Efficiency Evaluation of Adsorbents for the Removal of VOC and NO2 in an Underground Subway Station

Coupling of Solvent Extraction and Ultrasonic Waves for Regeneration of Spent Activated Carbon after Treatment of Polluted Air with Toluene Vapor

Modelling the Breakthrough Curves Obtained from the Adsorption of Propene onto Microporous Inorganic Solids

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