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Modeling TOC Removal by GAC: The General Logistic Function
Author(s) -
Clark Robert M.
Publication year - 1987
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.1551-8833.1987.tb02780.x
Subject(s) - logistic function , freundlich equation , adsorption , inverse , function (biology) , breakthrough curve , activated carbon , total organic carbon , logistic regression , mathematics , biological system , chemistry , statistics , environmental chemistry , organic chemistry , geometry , evolutionary biology , biology
Various models have been proposed to predict the performance of granular activated carbon (GAC) for single and bisolute systems, including the use of a bed depth service model for interpreting data for operation of adsorption beds to remove total organic carbon (TOC). This model is essentially the simple or symmetrical logistic function. The generalized logistic function is applied to TOC removal and data from GAC, incorporating the inverse of the Freundlich isotherm slope. Thus the model is useful when the breakthrough curve is nonsymmetrical.