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AWWA ACE94152
- Impact of Backwashing and Desorption on GAC Breakthrough of Natural Organic Matter
- Conference Proceeding by American Water Works Association, 01/01/1994
- Publisher: AWWA
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The objectives of this study were to investigate the impact of backwashing and desorption on the breakthrough behavior of natural organic matter and disinfection byproduct precursors and to develop a model to account for adsorption, hindered back diffusion and backwashing. The study was divided into the following specific objectives: examine the impact of backwashing on NOM adsorption; investigate the desorption of NOM by a concentration gradient; model the experimental adsorption and desorption data; model the experimental backwashing data; modifying existing models to include the effect of hindered back-diffusion; and apply the modified model to NOM desorption.