Adsorption and desorption of natural organic matter on iron oxide: mechanisms and models

The interaction mechanisms between natural organic matter (NOM) and iron oxide surfaces are examined, and a predictive model for NOM adsorption and desorption is proposed. Evidence indicates that ligand exchange between carboxyl/hydroxyl functional groups of NOM and iron oxide surfaces is the domina...

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Veröffentlicht in:	Environmental science & technology 1994-01, Vol.28 (1), p.38-46
Hauptverfasser:	Gu, Baohua, Schmitt, Juergen, Chen, Zhihong, Liang, Liyuan, McCarthy, John F
Format:	Artikel
Sprache:	eng
Schlagworte:	400201 - Chemical & Physicochemical Properties 540220 - Environment, Terrestrial- Chemicals Monitoring & Transport- (1990-) ADSORPTION ADSORPTION HEAT ADSORPTION ISOTHERMS AFFINITY Applied sciences Biological and physicochemical phenomena CALORIMETRY CHALCOGENIDES Chemistry DESORPTION ENTHALPY Environment ENVIRONMENTAL SCIENCES ENVIRONMENTAL TRANSPORT Exact sciences and technology FORECASTING FOURIER TRANSFORM SPECTROMETERS HYSTERESIS INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY IRON COMPOUNDS IRON OXIDES ISOTHERMS LAND POLLUTION LIGANDS MASS TRANSFER MATHEMATICAL MODELS MATTER MEASURING INSTRUMENTS MINERALS Natural water pollution NMR SPECTRA ORGANIC MATTER OXIDES OXYGEN COMPOUNDS PH VALUE PHYSICAL PROPERTIES POLLUTANTS POLLUTION SORPTION SPECTRA SPECTROMETERS SURFACE PROPERTIES THERMODYNAMIC PROPERTIES TRANSITION ELEMENT COMPOUNDS Water treatment and pollution
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Beschreibung
Zusammenfassung:	The interaction mechanisms between natural organic matter (NOM) and iron oxide surfaces are examined, and a predictive model for NOM adsorption and desorption is proposed. Evidence indicates that ligand exchange between carboxyl/hydroxyl functional groups of NOM and iron oxide surfaces is the dominant interaction mechanism.
ISSN:	0013-936X 1520-5851
DOI:	10.1021/es00050a007