Comment on "Recalculation, Evaluation and Prediction of Surface Complexation Constants for Metal Adsorption on Iron and Manganese Oxides." (includes response)

Article Abstract:

The method of calculating the values of cation sorption constants that were compiled by Robert W. Smith and Everett A. Jenne will not yield consistent results. The constants were calculated for use with the triple-layer model and were derived from surface complexation constants reported in the literature. The four sources of inconsistency in the surface complexation constant calculations are surface site density, surface loading, surface acidity constants used and surface species used. A reply by Robert W. Smith and Everett A. Jones is also included.

Complex compounds, Coordination compounds

---

Application of the surface complexation concept to complex mineral assemblages

Article Abstract:

Investigations into the adsorption of Zn(2+) by the sediment revealed that besides the dependence of the adsorption process on pH, modeling revealed the role of surface area and site density parameters. Despite the modeling of such factors, the resulting data still failed to adequately model the adsorption process, especially in terms of modeling the process under the component additivity approach.

Research and Development in the Physical, Engineering, and Life Sciences, Ecological Sciences, Environmental sciences, Lake sediments, Environmental chemistry

---

Effect of component oxide interaction on the adsorption properties of mixed oxides

Article Abstract:

The aqueous suspension of the mixed oxides Al(OH)3/SiO2 and Fe(OH)3/SiO2 was studied using transmission electron microscopy to determine the influence of oxide interaction on their adsorption characteristics. The results showed that the interaction between Al(OH)3 and SiO2 was stronger than that observed in Fe(OH)3 and SiO2. In addition, there was enhanced Cd+ and Ca2+ adsorption.

Oxides

Similar abstracts:

• Abstracts: Reversible photoreductive deposition and oxidative dissolution of copper ions in titanium dioxide aqueous suspensions
• Abstracts: The role of gas dissolution and induced crystallization during microcellular polymer processing: a study of poly(ethylene terephthalate) and carbon dioxide systems
• Abstracts: Use of stable isotope measurement to evaluate the origin of sulfur in gypsum layers on limestone buildings. Fuel rich sulfur capture in a combustion environment
• Abstracts: Physicochemical speciation of trace elements in river waters by size fractionation. Phase associations and mobilization of iron and trace elements in Coeur d'Alene Lake, Idaho

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.