Aqueous-phase adsorption of glycerol and propylene glycol onto activated carbon

Lars Peereboom, Benjamin Koenigsknecht, Margaret Hunter, James E. Jackson, Dennis J. Miller

Research output: Contribution to journalArticle

  • 15 Citations

Abstract

Adsorption of reactant and product species can have a major effect on local pore concentrations in activated carbon-supported metal catalysts. Individual and combined adsorption of glycerol (GO) and propylene glycol (PG) onto activated carbon in aqueous solution is reported here at concentration ranges of 0.05-2.0 M and temperatures from 25 °C to 160 °C. Langmuir and Freundlich isotherms are used to model the single component data, with the Langmuir model best describing results below 0.75 M. The extended Langmuir model has been used to model the competitive adsorption system - model parameters determined from single component experiments accurately predict two component adsorption data over the temperature and concentration ranges studied. Propylene glycol adsorbs more strongly than GO onto the activated carbon supports studied, and also adsorbs to a somewhat greater extent compared to GO. This is attributed to the greater organic character of PG, which favors its selective adsorption onto the support material.

LanguageEnglish (US)
Pages579-586
Number of pages8
JournalCarbon
Volume45
Issue number3
DOIs
StatePublished - Mar 2007

Profile

Propylene Glycol
Glycols
Glycerol
Activated carbon
Propylene
Adsorption
Isotherms
Metals
Temperature
Catalysts
Experiments

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Aqueous-phase adsorption of glycerol and propylene glycol onto activated carbon. / Peereboom, Lars; Koenigsknecht, Benjamin; Hunter, Margaret; Jackson, James E.; Miller, Dennis J.

In: Carbon, Vol. 45, No. 3, 03.2007, p. 579-586.

Research output: Contribution to journalArticle

Peereboom, Lars ; Koenigsknecht, Benjamin ; Hunter, Margaret ; Jackson, James E. ; Miller, Dennis J./ Aqueous-phase adsorption of glycerol and propylene glycol onto activated carbon. In: Carbon. 2007 ; Vol. 45, No. 3. pp. 579-586
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