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Benzenecarboxylate surface complexation at the goethite (alpha-FeOOH)/water interface - III. The influence of particle surface area and the significance of modeling parameters

Boily, J. F. ; Persson, Per LU and Sjoberg, S. (2000) In Journal of Colloid and Interface Science 227. p.132-140
Abstract
A surface complexation model describing the adsorption of three benzenecarboxylates (phthalate, trimellitate, and pyromellitate) on goethite (alpha-FeOOH) was calibrated on data using goethite particles of 37 and 43 m(2)/g surface area. The models predict potentiometric titration and batch adsorption data with the multisite complexation model coupled with the three-plane model to account for surface electrostatics. The modeling parameters were found to be similar to those calibrated on benzenecarboxylate adsorption data on goethite particles of 90 m(2)/g (Boily et al. Geochim. Cosmochim. Acta, in press). The significance of the benzenecarboxylate-dependent values of the modeling parameters is also discussed. The values of the capacitances... (More)
A surface complexation model describing the adsorption of three benzenecarboxylates (phthalate, trimellitate, and pyromellitate) on goethite (alpha-FeOOH) was calibrated on data using goethite particles of 37 and 43 m(2)/g surface area. The models predict potentiometric titration and batch adsorption data with the multisite complexation model coupled with the three-plane model to account for surface electrostatics. The modeling parameters were found to be similar to those calibrated on benzenecarboxylate adsorption data on goethite particles of 90 m(2)/g (Boily et al. Geochim. Cosmochim. Acta, in press). The significance of the benzenecarboxylate-dependent values of the modeling parameters is also discussed. The values of the capacitances of the inner- and outer-Helmholtz planes were shown to be important modeling parameters to model the benzenecarboxylate-dependent slopes of the adsorption edges. It was shown that the larger the charge of the ligand, the larger the capacitance of the outer-Helmholtz plane. (C) 2000 Academic Press. (Less)
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author
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publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Colloid and Interface Science
volume
227
pages
132 - 140
publisher
Elsevier
external identifiers
  • scopus:0034235220
  • pmid:10860603
ISSN
1095-7103
DOI
10.1006/jcis.2000.6886
language
English
LU publication?
no
additional info
1
id
19d62679-8f1b-4840-82e2-a299d38c73cc (old id 4332606)
date added to LUP
2016-04-01 12:04:45
date last changed
2022-01-26 22:29:38
@article{19d62679-8f1b-4840-82e2-a299d38c73cc,
  abstract     = {{A surface complexation model describing the adsorption of three benzenecarboxylates (phthalate, trimellitate, and pyromellitate) on goethite (alpha-FeOOH) was calibrated on data using goethite particles of 37 and 43 m(2)/g surface area. The models predict potentiometric titration and batch adsorption data with the multisite complexation model coupled with the three-plane model to account for surface electrostatics. The modeling parameters were found to be similar to those calibrated on benzenecarboxylate adsorption data on goethite particles of 90 m(2)/g (Boily et al. Geochim. Cosmochim. Acta, in press). The significance of the benzenecarboxylate-dependent values of the modeling parameters is also discussed. The values of the capacitances of the inner- and outer-Helmholtz planes were shown to be important modeling parameters to model the benzenecarboxylate-dependent slopes of the adsorption edges. It was shown that the larger the charge of the ligand, the larger the capacitance of the outer-Helmholtz plane. (C) 2000 Academic Press.}},
  author       = {{Boily, J. F. and Persson, Per and Sjoberg, S.}},
  issn         = {{1095-7103}},
  language     = {{eng}},
  pages        = {{132--140}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Colloid and Interface Science}},
  title        = {{Benzenecarboxylate surface complexation at the goethite (alpha-FeOOH)/water interface - III. The influence of particle surface area and the significance of modeling parameters}},
  url          = {{http://dx.doi.org/10.1006/jcis.2000.6886}},
  doi          = {{10.1006/jcis.2000.6886}},
  volume       = {{227}},
  year         = {{2000}},
}