On the Adsorption of Aromatics on Oxygenated Activated Carbon in Nonaqueous Adsorption Media

Hassan A. Arafat; Falk Ahnert; Neville G. Pinto

doi:10.1081/ss-120027400

On the Adsorption of Aromatics on Oxygenated Activated Carbon in Nonaqueous Adsorption Media

Hassan A. Arafat, Falk Ahnert, Neville G. Pinto

Chemical and Petroleum Engineering

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16 Scopus citations

Abstract

In a previous study, H-bonding was postulated as a mechanism of adsorption for aromatics on oxygen-containing activated carbon. To verify this, the adsorption of phenol, aniline, benzene, and nitrobenzene was studied as a function of surface oxygen groups. It was determined that there is a linear correlation between total surface acidity and adsorption capacity for H-bonding adsorbates in cyclohexane. Flow microcalorimetry (FMC) and ultrasonic desorption tests also indicate stronger and less reversible adsorption bonds for H-bonding adsorbates. Reversibility of adsorption decreased with increasing surface oxygen concentration, indicating a strong relationship between the oxygen groups and adsorption mechanism.

Original language	British English
Pages (from-to)	43-62
Number of pages	20
Journal	Separation Science and Technology (Philadelphia)
Volume	39
Issue number	1
DOIs	https://doi.org/10.1081/ss-120027400
State	Published - 2005

Keywords

Activated carbon
Microcalorimetry
Oxidation
Surface treatment
Ultrasonic measurements

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10.1081/ss-120027400

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title = "On the Adsorption of Aromatics on Oxygenated Activated Carbon in Nonaqueous Adsorption Media",

abstract = "In a previous study, H-bonding was postulated as a mechanism of adsorption for aromatics on oxygen-containing activated carbon. To verify this, the adsorption of phenol, aniline, benzene, and nitrobenzene was studied as a function of surface oxygen groups. It was determined that there is a linear correlation between total surface acidity and adsorption capacity for H-bonding adsorbates in cyclohexane. Flow microcalorimetry (FMC) and ultrasonic desorption tests also indicate stronger and less reversible adsorption bonds for H-bonding adsorbates. Reversibility of adsorption decreased with increasing surface oxygen concentration, indicating a strong relationship between the oxygen groups and adsorption mechanism.",

keywords = "Activated carbon, Microcalorimetry, Oxidation, Surface treatment, Ultrasonic measurements",

author = "Arafat, {Hassan A.} and Falk Ahnert and Pinto, {Neville G.}",

note = "Funding Information: The authors are grateful to Professor Peter Nagy, from the Aerospace Engineering Department, University of Cincinnati, for providing the experimental setup for the ultrasonic desorption experiments. This work was supported by the National Science Foundation GOALI Grant No. BES 9930739, co-sponsored by Calgon Carbon Corporation and E.I. DuPont deNemours. This support is gratefully acknowledged.",

year = "2005",

doi = "10.1081/ss-120027400",

language = "British English",

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pages = "43--62",

journal = "Separation Science and Technology (Philadelphia)",

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publisher = "Taylor and Francis Ltd.",

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T1 - On the Adsorption of Aromatics on Oxygenated Activated Carbon in Nonaqueous Adsorption Media

AU - Arafat, Hassan A.

AU - Ahnert, Falk

AU - Pinto, Neville G.

N1 - Funding Information: The authors are grateful to Professor Peter Nagy, from the Aerospace Engineering Department, University of Cincinnati, for providing the experimental setup for the ultrasonic desorption experiments. This work was supported by the National Science Foundation GOALI Grant No. BES 9930739, co-sponsored by Calgon Carbon Corporation and E.I. DuPont deNemours. This support is gratefully acknowledged.

PY - 2005

Y1 - 2005

N2 - In a previous study, H-bonding was postulated as a mechanism of adsorption for aromatics on oxygen-containing activated carbon. To verify this, the adsorption of phenol, aniline, benzene, and nitrobenzene was studied as a function of surface oxygen groups. It was determined that there is a linear correlation between total surface acidity and adsorption capacity for H-bonding adsorbates in cyclohexane. Flow microcalorimetry (FMC) and ultrasonic desorption tests also indicate stronger and less reversible adsorption bonds for H-bonding adsorbates. Reversibility of adsorption decreased with increasing surface oxygen concentration, indicating a strong relationship between the oxygen groups and adsorption mechanism.

AB - In a previous study, H-bonding was postulated as a mechanism of adsorption for aromatics on oxygen-containing activated carbon. To verify this, the adsorption of phenol, aniline, benzene, and nitrobenzene was studied as a function of surface oxygen groups. It was determined that there is a linear correlation between total surface acidity and adsorption capacity for H-bonding adsorbates in cyclohexane. Flow microcalorimetry (FMC) and ultrasonic desorption tests also indicate stronger and less reversible adsorption bonds for H-bonding adsorbates. Reversibility of adsorption decreased with increasing surface oxygen concentration, indicating a strong relationship between the oxygen groups and adsorption mechanism.

KW - Activated carbon

KW - Microcalorimetry

KW - Oxidation

KW - Surface treatment

KW - Ultrasonic measurements

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U2 - 10.1081/ss-120027400

DO - 10.1081/ss-120027400

M3 - Article

AN - SCOPUS:1342279383

SN - 0149-6395

VL - 39

SP - 43

EP - 62

JO - Separation Science and Technology (Philadelphia)

JF - Separation Science and Technology (Philadelphia)

IS - 1

ER -

On the Adsorption of Aromatics on Oxygenated Activated Carbon in Nonaqueous Adsorption Media

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Keywords

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