A MATHEMATICAL METHOD FOR EVALUATION OF A DSORPTION ANALYSIS

Adsorption analysis is a method for describing an overall isotherm of a mixture of unknown composition such as natural organic substances or chemical industries wastewater by dividing into fictive components of different adsorbability. The adsorption behaviour of the fictive comp onents is characterized by using the Freundlich isotherm. The competit ive adsorption between these components is described by the Ideal Adso rbed Solution Theory (IAST). Usually, at given Freundlich parameters K and n, the initial concentrations of the fictive components must be a djusted in order to obtain a good fit between calculated and measured isotherm data points. The results of this adjustment depend to some ex tent on the minimization criteria. Previously, the modeling was done w ith empirical or numerical methods which required a lot of computation time and sometimes caused numerical problems which made the interpret ation of the results difficult. This paper describes a mathematical me thod for the evaluation of isotherms by adsorption analysis.