Competitive adsorption of phenols on GAC. 2: Adsorption dynamics under anoxic conditions

Journal Article · · Journal of Environmental Engineering (New York); (United States)

DOI:https://doi.org/10.1061/(ASCE)0733-9372(1993)119:6(1044)· OSTI ID:5710636

Sorial, G A; Suidan, M T; Vidic, R D ^[1]; Maloney, S W ^[2]

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1. Univ. of Cincinnati, OH (United States). Dept. of Civil and Environmental Engineering
2. Army Construction Engineering Research Lab., Champaign, IL (United States)

The impact of the presence of molecular oxygen in the test environment is further evaluated for adsorption behavior of a mixture of phenolic compounds on fixed-bed GAC adsorbers. Adsorption breakthrough curves are obtained for the single-solute system phenol, o-cresol, and 3-ethylphenol; the binary solute system of phenol and o-cresol; and the ternary solute system of phenol, o-cresol, and 3-ethylphenol. The plug-flow homogeneous surface diffusion model is evaluated as a predictor of adsorber performance for these systems. The binary and ternary solute calculations of the model are performed using kinetic parameters determined for the single-solute system. The ideal adsorbed solution theory is used to describe the equilibrium on the surface of the adsorbent particle. The model predictions for the single-solute system agree very well with the experimental break-through curves conducted under anoxic conditions, with exception to the later portion of the o-cresol breakthrough, where tailing of the experimental break-through has been noticed due to the presence of limited concentrations of dissolved oxygen in the feed. The model predictions for the binary and ternary solute systems agree well with the experimental data collected under anoxic conditions.

• OSTI ID: 5710636
• Journal Information: Journal of Environmental Engineering (New York); (United States), Journal Name: Journal of Environmental Engineering (New York); (United States) Vol. 119:6; ISSN 0733-9372; ISSN JOEEDU
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ACTIVATED CARBON
ADSORBENTS
ADSORPTION
ANOXIA
AROMATICS
CARBON
CRESOLS
DISPERSIONS
ELEMENTS
HYDROXY COMPOUNDS
MATHEMATICAL MODELS
MIXTURES
NONMETALS
ORGANIC COMPOUNDS
PHENOL
PHENOLS
SOLUTES
SORPTION