Influence of molecular properties under anoxic solution conditions

Article Abstract:

Granular activated carbon's (GAC) adsorption of nine different natural and synthetic macromolecular dissolved organic materials (DOMs) was studied to understand the roles of DOM molecular size and chemical structure in the process. Adsorption of polystyrene sulfonate was noted to decrease as macromolecular size increases. The same was true for Laurentian, peat and Aldrich humic acids which were fractionated by ultrafiltration. Such similarity indicates a relative uniformity of the chemistry of humic macromolecules from one fraction to another. It also indicates that physical size effects are the main factor behind the differences in GAC uptake of different fractions.

Analysis, Activated carbon, Macromolecules, Carbon, Activated

---

Adsorption of weak polyelectrolytes on metal oxide surfaces: a hybrid SC/SF approach

Article Abstract:

The surface complexation (SC) model was used in conjunction with the Scheutjens-Fleer framework in assessing the adsorption process that occurs between polyeltrolytes on metal oxide surfaces. It was established that solution chemistry and polyelectrolyte speciation both generate a profound effect on the interaction of functional groups and surface sites. It was further shown that the hybrid SC/SF model provides comprehensive information about adsorption over a wide range of conditions.

All Other Miscellaneous Chemical Product and Preparation Manufacturing, Primary Metal Manufacturing, PRIMARY METAL INDUSTRIES, Metals, Chemical preparations, not elsewhere classified, Polyelectrolytes, Metals (Materials), Metallic oxides, Metal oxides

---

Similar abstracts:

• Abstracts: Intermolecular dynamics, interactions, and solvation in ionic liquids
• Abstracts: Kinetics of DCE and VC mineralization under methanogenic and Fe(III)-reducing conditions. Factors affecting microbial 2,4,6-trinitrotoluene mineralization in contaminated soil
• Abstracts: Influence of structural features on sorption of NOM-analogue organic acids to goethite. Competitive sorption of simple organic acids and sulfate on goethite
• Abstracts: Biodegradation of naphthalene from coal tar and heptamethylnonane in mixed batch systems. part 2 Mass transfer and bioavailability of PAH compounds in coal tar NAPL-slurry systems. 1. model development
• Abstracts: Noble metal catalyzed hydrogen generation from formic acid in nitrite-containing simulated nuclear waste media

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