The role of activated carbon surface heterogeneity on the polymerization of adsorbed phenols
- Univ. of Michigan, Ann Arbor, MI (United States)
The role of GAC surface site energy distributions and the effects of prior adsorption of background organic macromolecules ({open_quotes}preloading{close_quotes}) on the polymerization of phenolic compounds in the presence of oxygen have been investigated using a theory developed to describe sorption of solutes on heterogeneous solid surfaces. GAC surface heterogeneity has been found to be the most important parameter controlling the polymerization reactions of adsorbed phenols, the extent of polymerization being greater on high energy sites than on low energy sites. Surface site energy distribution analysis under preloading conditions indicates that preferential and {open_quotes}irreversible{close_quotes} occupation of high energy sites by background organic macromolecules, which themselves can polymerize on such sites, markedly increases the adverse effects of preloading, decreasing the ability of the GAC both to subsequently adsorb and to polymerize target phenolic contaminants.
- OSTI ID:
- 126344
- Report Number(s):
- CONF-950402-; TRN: 95:006086-0328
- Resource Relation:
- Conference: 209. American Chemical Society (ACS) national meeting, Anaheim, CA (United States), 2-6 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of 209th ACS national meeting; PB: 2088 p.
- Country of Publication:
- United States
- Language:
- English
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