Prediction of multicomponent adsorption behavior in activated carbon adsorbers: kinetic aspects

Journal Article · Tue Sep 01 00:00:00 EDT 1987 · J. Environ. Pathol., Toxicol. Oncol.; (United States)

OSTI ID:5404593

Merk, W

Although the concentrations of solutes are very low in water treatment, it cannot be expected that the film-diffusion model predicts breakthrough behavior satisfactorily, for the following reasons: most of the solutes have less favorable isotherms than p-nitrophenol or p-chlorophenol; many solutes are much larger molecules and hence have a much higher internal diffusion resistance than p-nitrophenol or p-chlorophenol; and displacement effects cause a much higher internal resistance than expected from single-solute data. Therefore, internal diffusion resistance has to be incorporated into the film-homogeneous diffusion model. All parameters needed in this model can be obtained from batch reactor tests. Multi-solute systems may be regarded as a single-solute system or a bi-solute system, respectively, if all solutes except one or two are present in very different concentrations; and/or have a comparatively small affinity to activated carbon; and/or have a comparatively small internal diffusion coefficient.

• OSTI ID: 5404593
• Journal Information: J. Environ. Pathol., Toxicol. Oncol.; (United States), Vol. 7:7-8
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ACTIVATED CARBON
SORPTIVE PROPERTIES
CHLORINATED AROMATIC HYDROCARBONS
ADSORPTION
DIFFUSION
NITROPHENOL
WATER SUPPLY
DECONTAMINATION
FILTRATION
FORECASTING
KINETICS
MATHEMATICAL MODELS
SOLUTES
ADSORBENTS
AROMATICS
CARBON
CLEANING
ELEMENTS
HALOGENATED AROMATIC HYDROCARBONS
HYDROXY COMPOUNDS
NITRO COMPOUNDS
NONMETALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHENOLS
SEPARATION PROCESSES
SORPTION
SURFACE PROPERTIES
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)