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Using GAC to Remove VOCs From Air Stripper Off‐Gas
Author(s) -
Crittenden John C.,
Cortright Randy D.,
Rick Brad,
Tang ShinRu,
Perram David
Publication year - 1988
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1988.tb03040.x
Subject(s) - adsorption , stripping (fiber) , gas phase , activated carbon , phase (matter) , chemistry , kinetics , aqueous solution , waste management , air stripping , aqueous two phase system , chemical engineering , chromatography , environmental science , environmental engineering , materials science , organic chemistry , wastewater , composite material , physics , quantum mechanics , engineering
This article focuses on the technical and economic feasibility of treating air stripper off‐gas with granular activated carbon (GAC). For dichloroethene and trichloroethene, air stripping followed by off‐gas GAC treatment was shown to be very effective and economical compared with aqueous‐phase GAC treatment, with GAC usage rates for gas‐phase adsorption being less than one half those for aqueous‐phase adsorption. Also, because gas‐phase adsorption kinetics are much faster than liquid‐phase kinetics, the required bed depth and diameter are much smaller for gas‐phase beds. Steam regeneration was found to be ineffective for regeneration gas‐phase GAC at low concentrations.