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GAC adsorption of intermittently loaded pesticides
Author(s) -
Matsui Yoshihiko,
Kamei Tasuku,
Kawase Etsuro,
Snoeyink Ver L.,
Tambo Norihito
Publication year - 1994
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.1551-8833.1994.tb06249.x
Subject(s) - adsorption , pesticide , activated carbon , diffusion , chemistry , chromatography , environmental engineering , environmental chemistry , chemical engineering , environmental science , thermodynamics , organic chemistry , engineering , ecology , physics , biology
Almost identical breakthrough curves were observed for both intermittent and continuous loading of pesticides. The removal efficiency of intermittently applied pesticides by a granular activated carbon bed preloaded with background organic matter (BOM) was examined using the rapid small‐scale column test. Preloading with BOM decreased the removal efficiency of the pesticides. The removal efficiency was a function of the amount of BOM adsorbed, but was unrelated to the influent concentration of the pesticide. A modeling approach employing the ideal adsorbed solution theory and a linear driving‐force expression for intraparticle surface diffusion adequately simulated these phenomena.