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Benzenecarboxylate ...
Benzenecarboxylate surface complexation at the goethite (α-FEOOH)/water interface. III. The influence of particle surface area and the significance of modeling parameters
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- Boily, Jean-Francois (författare)
- Umeå universitet,Kemiska institutionen
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- Persson, Per (författare)
- Umeå universitet,Kemiska institutionen
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- Sjöberg, Staffan (författare)
- Umeå universitet,Kemiska institutionen
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(creator_code:org_t)
- 2000
- 2000
- Engelska.
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Ingår i: Journal of colloid and interface science. ; 227:1, s. 132-40
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Abstract
Ämnesord
Stäng
- A surface complexation model describing the adsorption of three benzenecarboxylates (phthalate, trimellitate, and pyromellitate) on goethite (α-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.
Nyckelord
- Experimental study
- Liquid solid adsorption
- Surface complex
- Goethite
- Benzene derivatives
- Modeling
- Surface area
- Structure effect
- Carboxylate
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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