Thermodynamics and kinetics of fuel oxygenate adsorption into granular activated carbon

Rafael Gonzalez-Olmos; Miguel Iglesias

doi:10.1021/je800366a

Thermodynamics and kinetics of fuel oxygenate adsorption into granular activated carbon

Rafael Gonzalez-Olmos^*, Miguel Iglesias

^*Corresponding author for this work

Research output: Indexed journal article › Article › peer-review

13 Citations (Scopus)

Abstract

The removal of methyl tert-butyl ether (MTBE) and ethyl tert-butyl ether (ETBE) from water by granular activated carbon (GAC) was studied at different temperatures. Freundlich and Langmuir isotherm coefficients were developed based on linearized forms of the models. The results show the dependence of the isotherms with temperature. Data obtained from the kinetic studies were treated according to various kinetic models with the second-order model being the most suitable overall. Thermodynamic parameters (ΔG, ΔH, and ΔS) for the adsorption process were calculated, and the results suggest that the nature of adsorption is endothermic, spontaneous, and favorable. According to the values of activation energy and enthalpy, the adsorption of both compounds in the studied GAC is in the range of physisorption.

Original language	English
Pages (from-to)	2556-2561
Number of pages	6
Journal	Journal of Chemical and Engineering Data
Volume	53
Issue number	11
DOIs	https://doi.org/10.1021/je800366a
Publication status	Published - 13 Nov 2008
Externally published	Yes

Keywords

Tert-butyl ether
Vapor-liquid-equilibria
Amyl methyl-ether
Advanced oxidation
Mtbe
Temperature
Removal
Isotherms
Behavior
Xylene

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10.1021/je800366a

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title = "Thermodynamics and kinetics of fuel oxygenate adsorption into granular activated carbon",

abstract = "The removal of methyl tert-butyl ether (MTBE) and ethyl tert-butyl ether (ETBE) from water by granular activated carbon (GAC) was studied at different temperatures. Freundlich and Langmuir isotherm coefficients were developed based on linearized forms of the models. The results show the dependence of the isotherms with temperature. Data obtained from the kinetic studies were treated according to various kinetic models with the second-order model being the most suitable overall. Thermodynamic parameters (ΔG, ΔH, and ΔS) for the adsorption process were calculated, and the results suggest that the nature of adsorption is endothermic, spontaneous, and favorable. According to the values of activation energy and enthalpy, the adsorption of both compounds in the studied GAC is in the range of physisorption.",

keywords = "Tert-butyl ether, Vapor-liquid-equilibria, Amyl methyl-ether, Advanced oxidation, Mtbe, Temperature, Removal, Isotherms, Behavior, Xylene",

author = "Rafael Gonzalez-Olmos and Miguel Iglesias",

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T1 - Thermodynamics and kinetics of fuel oxygenate adsorption into granular activated carbon

AU - Gonzalez-Olmos, Rafael

AU - Iglesias, Miguel

PY - 2008/11/13

Y1 - 2008/11/13

N2 - The removal of methyl tert-butyl ether (MTBE) and ethyl tert-butyl ether (ETBE) from water by granular activated carbon (GAC) was studied at different temperatures. Freundlich and Langmuir isotherm coefficients were developed based on linearized forms of the models. The results show the dependence of the isotherms with temperature. Data obtained from the kinetic studies were treated according to various kinetic models with the second-order model being the most suitable overall. Thermodynamic parameters (ΔG, ΔH, and ΔS) for the adsorption process were calculated, and the results suggest that the nature of adsorption is endothermic, spontaneous, and favorable. According to the values of activation energy and enthalpy, the adsorption of both compounds in the studied GAC is in the range of physisorption.

AB - The removal of methyl tert-butyl ether (MTBE) and ethyl tert-butyl ether (ETBE) from water by granular activated carbon (GAC) was studied at different temperatures. Freundlich and Langmuir isotherm coefficients were developed based on linearized forms of the models. The results show the dependence of the isotherms with temperature. Data obtained from the kinetic studies were treated according to various kinetic models with the second-order model being the most suitable overall. Thermodynamic parameters (ΔG, ΔH, and ΔS) for the adsorption process were calculated, and the results suggest that the nature of adsorption is endothermic, spontaneous, and favorable. According to the values of activation energy and enthalpy, the adsorption of both compounds in the studied GAC is in the range of physisorption.

KW - Tert-butyl ether

KW - Vapor-liquid-equilibria

KW - Amyl methyl-ether

KW - Advanced oxidation

KW - Mtbe

KW - Temperature

KW - Removal

KW - Isotherms

KW - Behavior

KW - Xylene

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DO - 10.1021/je800366a

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JO - Journal of Chemical and Engineering Data

JF - Journal of Chemical and Engineering Data

IS - 11

ER -

Thermodynamics and kinetics of fuel oxygenate adsorption into granular activated carbon

Abstract

Keywords

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