Short-term sorption of toluene vapor onto natural organic materials

Chuen Huey Chiu, Tsair-Fuh Lin, Chiu Chung Young

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The effects of surface area, micro-porosity, and surface chemical structure on the sorption of toluene vapor onto three model natural organic materials (NOMs), including two peats (CH and HS) and one tree bark compost (TB) were examined. The BET surface area, pore size distribution, element composition, sorption kinetics and isotherms, and carbon functionality (CP/MAS 13C-NMR spectra) were measured for the model organic matters. All the three NOMs have small BET-surface areas (below 5 m2 g-1), and small porosity (ranging from 0.6 to 3.4 cm3 g-1 ). Sorption of toluene vapor on NOMs was found to reach equilibrium in about one hour. A weak interaction (van der Waals' forces) was found between toluene and the three NOMs, with sorption uptake in the order of peat-CH > compost TB > peat HS. This toluene uptake order is similar to that for pore volume. Compared to the pore size distribution data measured by liquid nitrogen, sorption of toluene vapor onto the model NOMs may be attributed to the mechanisms similar to that for nitrogen adsorption, suggesting that nitrogen may be used as a probe for determining the sorption of toluene on the three NOMs. For peat HS and compost TB, the sorption processes may be regarded as 'pore-filling' in a glassy phase SOM. In addition, based on the functional group composition analysis with CP/MAS- 13C-NMR, it was not aromatic carbon group but the alkyl carbon group that probably supplied a more flexible space (rubbery phase SOM) for toluene to penetrate. This flexible space may contribute somewhat to the sorption capacity so that the uptake of toluene by peat CH is higher than that of nitrogen.

Original languageEnglish
Pages (from-to)223-241
Number of pages19
JournalWater, Air, and Soil Pollution
Volume144
Issue number1-4
DOIs
Publication statusPublished - 2003 Mar 1

Fingerprint

Toluene
toluene
Sorption
sorption
Vapors
Peat
compost
peat
bark
MAS
Nitrogen
Carbon
surface area
nitrogen
Pore size
nuclear magnetic resonance
carbon
porosity
Nuclear magnetic resonance
Van der Waals forces

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modelling
  • Water Science and Technology
  • Pollution

Cite this

Chiu, Chuen Huey ; Lin, Tsair-Fuh ; Young, Chiu Chung. / Short-term sorption of toluene vapor onto natural organic materials. In: Water, Air, and Soil Pollution. 2003 ; Vol. 144, No. 1-4. pp. 223-241.
@article{4b68a6265b0348b5b8fc7ed0c086eb50,
title = "Short-term sorption of toluene vapor onto natural organic materials",
abstract = "The effects of surface area, micro-porosity, and surface chemical structure on the sorption of toluene vapor onto three model natural organic materials (NOMs), including two peats (CH and HS) and one tree bark compost (TB) were examined. The BET surface area, pore size distribution, element composition, sorption kinetics and isotherms, and carbon functionality (CP/MAS 13C-NMR spectra) were measured for the model organic matters. All the three NOMs have small BET-surface areas (below 5 m2 g-1), and small porosity (ranging from 0.6 to 3.4 cm3 g-1 ). Sorption of toluene vapor on NOMs was found to reach equilibrium in about one hour. A weak interaction (van der Waals' forces) was found between toluene and the three NOMs, with sorption uptake in the order of peat-CH > compost TB > peat HS. This toluene uptake order is similar to that for pore volume. Compared to the pore size distribution data measured by liquid nitrogen, sorption of toluene vapor onto the model NOMs may be attributed to the mechanisms similar to that for nitrogen adsorption, suggesting that nitrogen may be used as a probe for determining the sorption of toluene on the three NOMs. For peat HS and compost TB, the sorption processes may be regarded as 'pore-filling' in a glassy phase SOM. In addition, based on the functional group composition analysis with CP/MAS- 13C-NMR, it was not aromatic carbon group but the alkyl carbon group that probably supplied a more flexible space (rubbery phase SOM) for toluene to penetrate. This flexible space may contribute somewhat to the sorption capacity so that the uptake of toluene by peat CH is higher than that of nitrogen.",
author = "Chiu, {Chuen Huey} and Tsair-Fuh Lin and Young, {Chiu Chung}",
year = "2003",
month = "3",
day = "1",
doi = "10.1023/A:1022977503362",
language = "English",
volume = "144",
pages = "223--241",
journal = "Water, Air, and Soil Pollution",
issn = "0049-6979",
publisher = "Springer Netherlands",
number = "1-4",

}

Short-term sorption of toluene vapor onto natural organic materials. / Chiu, Chuen Huey; Lin, Tsair-Fuh; Young, Chiu Chung.

In: Water, Air, and Soil Pollution, Vol. 144, No. 1-4, 01.03.2003, p. 223-241.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Short-term sorption of toluene vapor onto natural organic materials

AU - Chiu, Chuen Huey

AU - Lin, Tsair-Fuh

AU - Young, Chiu Chung

PY - 2003/3/1

Y1 - 2003/3/1

N2 - The effects of surface area, micro-porosity, and surface chemical structure on the sorption of toluene vapor onto three model natural organic materials (NOMs), including two peats (CH and HS) and one tree bark compost (TB) were examined. The BET surface area, pore size distribution, element composition, sorption kinetics and isotherms, and carbon functionality (CP/MAS 13C-NMR spectra) were measured for the model organic matters. All the three NOMs have small BET-surface areas (below 5 m2 g-1), and small porosity (ranging from 0.6 to 3.4 cm3 g-1 ). Sorption of toluene vapor on NOMs was found to reach equilibrium in about one hour. A weak interaction (van der Waals' forces) was found between toluene and the three NOMs, with sorption uptake in the order of peat-CH > compost TB > peat HS. This toluene uptake order is similar to that for pore volume. Compared to the pore size distribution data measured by liquid nitrogen, sorption of toluene vapor onto the model NOMs may be attributed to the mechanisms similar to that for nitrogen adsorption, suggesting that nitrogen may be used as a probe for determining the sorption of toluene on the three NOMs. For peat HS and compost TB, the sorption processes may be regarded as 'pore-filling' in a glassy phase SOM. In addition, based on the functional group composition analysis with CP/MAS- 13C-NMR, it was not aromatic carbon group but the alkyl carbon group that probably supplied a more flexible space (rubbery phase SOM) for toluene to penetrate. This flexible space may contribute somewhat to the sorption capacity so that the uptake of toluene by peat CH is higher than that of nitrogen.

AB - The effects of surface area, micro-porosity, and surface chemical structure on the sorption of toluene vapor onto three model natural organic materials (NOMs), including two peats (CH and HS) and one tree bark compost (TB) were examined. The BET surface area, pore size distribution, element composition, sorption kinetics and isotherms, and carbon functionality (CP/MAS 13C-NMR spectra) were measured for the model organic matters. All the three NOMs have small BET-surface areas (below 5 m2 g-1), and small porosity (ranging from 0.6 to 3.4 cm3 g-1 ). Sorption of toluene vapor on NOMs was found to reach equilibrium in about one hour. A weak interaction (van der Waals' forces) was found between toluene and the three NOMs, with sorption uptake in the order of peat-CH > compost TB > peat HS. This toluene uptake order is similar to that for pore volume. Compared to the pore size distribution data measured by liquid nitrogen, sorption of toluene vapor onto the model NOMs may be attributed to the mechanisms similar to that for nitrogen adsorption, suggesting that nitrogen may be used as a probe for determining the sorption of toluene on the three NOMs. For peat HS and compost TB, the sorption processes may be regarded as 'pore-filling' in a glassy phase SOM. In addition, based on the functional group composition analysis with CP/MAS- 13C-NMR, it was not aromatic carbon group but the alkyl carbon group that probably supplied a more flexible space (rubbery phase SOM) for toluene to penetrate. This flexible space may contribute somewhat to the sorption capacity so that the uptake of toluene by peat CH is higher than that of nitrogen.

UR - http://www.scopus.com/inward/record.url?scp=0037332564&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037332564&partnerID=8YFLogxK

U2 - 10.1023/A:1022977503362

DO - 10.1023/A:1022977503362

M3 - Article

VL - 144

SP - 223

EP - 241

JO - Water, Air, and Soil Pollution

JF - Water, Air, and Soil Pollution

SN - 0049-6979

IS - 1-4

ER -