Synthetic adsorbent versus GAC for TCE removal

The performance of a synthetic adsorbent in removing trichloroethene (TCE) from a groundwater containing natural organic matter (NOM) was compared with that of granular activated carbon (GAC). Adsorption equilibrium, kinetic, and pilot-plant experiments were used to compare the adsorbents. Adsorptio...

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Bibliographic Details
Published in:Journal - American Water Works Association 1994-08, Vol.86 (8), p.64-72
Main Authors: Hand, David W., Herlevich, Jon A., Perram, David L., Crittenden, John C.
Format: Article
Language:English
Subjects:
Adsorbents
ADSORPTION
CHLORINATED ALIPHATIC HYDROCARBONS
CLEANING
DECONTAMINATION
Diffusion coefficient
ENVIRONMENTAL SCIENCES
Fouling
Granular Activated Carbon
GROUND WATER
Groundwater
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
Isotherms
Kinetics
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
Modeling
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
Organics
OXYGEN COMPOUNDS
POLLUTION
PROCESSING
Pumps
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
SYNTHETIC MATERIALS
Synthetic Organic Chemicals
Tap water
TECHNOLOGY ASSESSMENT
WASTE MANAGEMENT
WASTE PROCESSING
WATER 540220 > Environment, Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
WATER POLLUTION
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Summary:The performance of a synthetic adsorbent in removing trichloroethene (TCE) from a groundwater containing natural organic matter (NOM) was compared with that of granular activated carbon (GAC). Adsorption equilibrium, kinetic, and pilot-plant experiments were used to compare the adsorbents. Adsorption isotherm studies showed that the synthetic adsorbent had three to four times more TCE capacity than GAC over a TCE concentration range of 10–2,000 µg/L. When preexposed for 24 weeks to a groundwater containing NOM, the synthetic adsorbent showed an average 12 percent loss in capacity compared with the single-solute isotherm performed on the virgin adsorbent; GAC showed an average 35 percent loss in its virgin capacity for a preexposed time of only 10 weeks. Rapid small-scale column tests and model calculations predicted pilot-plant effluent profiles for the synthetic adsorbent. The pilot-plant data confirmed that the synthetic adsorbent is more efficient than GAC in removing TCE.
ISSN:0003-150X
1551-8833
DOI:10.1002/j.1551-8833.1994.tb06239.x