Adsorption of MTBE from contaminated water by carbonaceous resins and mordenite zeolite

Hung, Hao Chang; Lin, Tsair Fuh

doi:10.1016/j.jhazmat.2005.11.050

Cited by 50 publications

(18 citation statements)

References 29 publications

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“…A knowledge of the interaction between adsorbent and adsorbate will provide an understanding of the properties of the selected zeolite and be useful for design an adsorbent with high capacity and selectivity. Recent studies [13,15,16] have already highlighted the effectiveness of the zeolite mordenite for the removal of MTBE, but a structural study for the definition of the hostguest interactions is completely lacking. Hung and Lin [16] studied the absorption of MTBE from natural water onto mordenite in comparison with carbonaceous resins.…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies [13,15,16] have already highlighted the effectiveness of the zeolite mordenite for the removal of MTBE, but a structural study for the definition of the hostguest interactions is completely lacking. Hung and Lin [16] studied the absorption of MTBE from natural water onto mordenite in comparison with carbonaceous resins. Among the samples tested, one of the resins and mordenite emerged as the most effective adsorbents for MTBE, it being demonstrated that for these two sorbents there was no competition between the organic matter, commonly dispersed in natural water, and the MTBE molecules.…”

Section: Introductionmentioning

confidence: 99%

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Location of MTBE and toluene in the channel system of the zeolite mordenite: Adsorption and host–guest interactions

Arletti

Martucci

Alberti

et al. 2012

Journal of Solid State Chemistry

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a b s t r a c tThis paper reports a study of the location of Methyl Tertiary Butyl Ether (MTBE) and toluene molecules adsorbed in the pores of the organophylic zeolite mordenite from an aqueous solution. The presence of these organic molecules in the zeolite channels was revealed by structure refinement performed by the Rietveld method. About 3 molecules of MTBE and 3.6 molecules of toluene per unit cell were incorporated into the cavities of mordenite, representing 75% and 80% of the total absorption capacity of this zeolite. In both cases a water molecule was localized inside the side pocket of mordenite. The saturation capacity determined by the adsorption isotherms, obtained by batch experiments, and the weight loss given by thermogravimetric (TG) analyses were in very good agreement with these values. The interatomic distances obtained after the structural refinements suggest MTBE could be connected to the framework through a water molecule, while toluene could be bonded to framework oxygen atoms. The rapid and high adsorption of these hydrocarbons into the organophylic mordenite zeolite makes this cheap and environmental friendly material a suitable candidate for the removal of these pollutants from water.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Location of MTBE and toluene in the channel system of the zeolite mordenite: Adsorption and host–guest interactions

Arletti

Martucci

Alberti

et al. 2012

Journal of Solid State Chemistry

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“…Due to its high solubility in water and low Henry's law constant, MTBE is not easily removed by conventional techniques in water treatment processes. Air stripping [9], adsorption processes on activated carbon [10], synthetic resins [11,12] and zeolites [13,14], as well as advanced oxidation processes such as the Fenton process [15,16] have been used for the removal of MTBE from water.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Methyl tert‐butyl Ether on Perfluorooctyl Alumina Adsorbents – High Concentration Range

2007

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The performance of two types of perfluorooctyl alumina (PFOAL) adsorbents prepared using c-alumina (PFOAL A ) and alumina-active-basic® (PFOAL B ) is reported. The equilibrium adsorption behavior of the adsorbents was studied for adsorption of methyl tert-butyl ether (MTBE) in a wide range (5-1000 mg/L) of aqueous phase MTBE concentrations. The monolayer adsorption capacities were 3.3 and 3.5 mg MTBE/g adsorbent, and the maximum adsorption capacities were 7.1 and 6.3 mg MTBE/g adsorbent for PFOAL A and PFOAL B, respectively. The application of Freundlich, Langmuir, BET and BDDT (the general form of BET) isotherms were compared for the modeling of aqueous adsorption of MTBE on the surface of PFOAL adsorbents. It was shown that adsorption of MTBE on the surface of PFOAL is a type IV van der Waals adsorption, which is best modeled by the general form of the BET (BDDT) multilayer adsorption isotherm.

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“…KF (mg/g(dm 3 /mg)1/n) is the Freundlich constant or adsorption coeffi cient 15 . For other materials it was found that the Freundlich kinetic is the best model of describing the kinetic data for MTBE removal from water 22 . The parameters of the Freundlich isotherm are presented in Table 3.…”

Section: Freundlich Modelmentioning

confidence: 99%

Potential of granulated modified nanozeolites Y for MTBE removal from aqueous solutions: Kinetic and isotherm studies

Ghadiri

Nabizadeh

Mahvi³

et al. 2012

Polish Journal of Chemical Technology

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Adsorption of methyl tert-butyl ether (MTBE) from aqueous solutions by granulated modifi ed nanozeolites Y was investigated. Nanozeolite Y powders were converted into granulated zeolites and subsequently modifi ed with two cationic surfactants (20 mmol/dm 3 ), to be used as adsorbent. Granulated nanozeolites were characterized by BET surface area analysis, elemental analysis and X-ray diffractometer. Hexadecyltrimethylammonium (HDTMA-Cl) modifi ed granulated zeolite had more effective performance than N-cetylpyridinium bromide (CPB) modifi ed granulated zeolite. The most conventional adsorption isotherms and kinetic models were applied to describe MTBE adsorption and reaction dynamic, respectively. The equilibrium sorption data fi tted the Langmuir 2 isotherm model and the kinetic study was followed the pseudo-second-order model. The maximum adsorption capacities for HDTMA-Cl modifi ed zeolite and CPB modifi ed granulated zeolite were 333.33 and 142.8 mg/g, respectively as calculated by the Langmuir model. This study demonstrated that the removal of mtbe by granulated modifi ed nanozeolites Y is a promising technique.

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Adsorption of MTBE from contaminated water by carbonaceous resins and mordenite zeolite

Cited by 50 publications

References 29 publications

Location of MTBE and toluene in the channel system of the zeolite mordenite: Adsorption and host–guest interactions

Location of MTBE and toluene in the channel system of the zeolite mordenite: Adsorption and host–guest interactions

Adsorption of Methyl tert‐butyl Ether on Perfluorooctyl Alumina Adsorbents – High Concentration Range

Potential of granulated modified nanozeolites Y for MTBE removal from aqueous solutions: Kinetic and isotherm studies

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