Complexation reactions of phthalic acid and aluminium(III) with the surface of goethite
Journal Article
·
· Geochimica et Cosmochimica Acta; (United States)
- Univ. of Umea (Sweden)
Complexation reactions of phthalic acid at the goethite-solution interface have been investigated in the absence and the presence of Al(III) in order to evaluate an equilibrium model applicable in chemical modeling. Phthalic acid was chosen as a model compound for natural organic substances. The study was performed as potentiometric titrations in 0.100 M NaNO{sub 3} at 298.2 K using a glass electrode. Evaluation of experimental data was based on the constant-capacitance model (K = 1.28 F m{sup {minus}2}). Evaluation of experimental data was based on the constant-capacitance model (K = 1.28 F m{sup {minus}2}). Complexation of phthalic acid (H{sub 2}L) at the surface of goethite is rather weak and results in the formation of mononuclear species. In the presence of Al(III), the adsorption behavior of phthalic acid indicated formation of ternary surface complexes in the region 4 {le} {minus}log (H{sup +}) {le} 7. Additional complexes occurring in the four-component system are described by the equilibria and intrinsic equilibrium constants listed in the paper.
- OSTI ID:
- 7049622
- Journal Information:
- Geochimica et Cosmochimica Acta; (United States), Journal Name: Geochimica et Cosmochimica Acta; (United States) Vol. 55:12; ISSN GCACA; ISSN 0016-7037
- Country of Publication:
- United States
- Language:
- English
Similar Records
Acid/base reactions and Al(III) complexation at the surface of goethite
Competitive metal ion adsorption in goethite systems using in situ voltammetric methods and potentiometry
Composition and stability of Cd(II)-chloro and -hydroxo complexes at the goethite ([alpha]-FeOOH)/water interface
Journal Article
·
Tue May 01 00:00:00 EDT 1990
· Geochimica et Cosmochimica Acta; (USA)
·
OSTI ID:6142286
Competitive metal ion adsorption in goethite systems using in situ voltammetric methods and potentiometry
Journal Article
·
Fri Oct 15 00:00:00 EDT 1999
· Journal of Colloid and Interface Science
·
OSTI ID:20013617
Composition and stability of Cd(II)-chloro and -hydroxo complexes at the goethite ([alpha]-FeOOH)/water interface
Journal Article
·
Mon Mar 14 23:00:00 EST 1994
· Journal of Colloid and Interface Science; (United States)
·
OSTI ID:7282875
Related Subjects
54 ENVIRONMENTAL SCIENCES
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
58 GEOSCIENCES
580000* -- Geosciences
ADSORPTION
ALUMINIUM
ALUMINIUM IONS
BENCH-SCALE EXPERIMENTS
CARBOXYLIC ACIDS
CHARGED PARTICLES
CHEMISTRY
DICARBOXYLIC ACIDS
ELEMENTS
EQUILIBRIUM
GOETHITE
IONS
KINETICS
METALS
MINERALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDE MINERALS
PH VALUE
PHTHALIC ACID
REACTION KINETICS
ROCK-FLUID INTERACTIONS
SOIL CHEMISTRY
SOILS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
WATER CHEMISTRY
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
58 GEOSCIENCES
580000* -- Geosciences
ADSORPTION
ALUMINIUM
ALUMINIUM IONS
BENCH-SCALE EXPERIMENTS
CARBOXYLIC ACIDS
CHARGED PARTICLES
CHEMISTRY
DICARBOXYLIC ACIDS
ELEMENTS
EQUILIBRIUM
GOETHITE
IONS
KINETICS
METALS
MINERALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDE MINERALS
PH VALUE
PHTHALIC ACID
REACTION KINETICS
ROCK-FLUID INTERACTIONS
SOIL CHEMISTRY
SOILS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
WATER CHEMISTRY