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.
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Matsui et al. (1994) studied this question.
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