Detergency, builders measurement

Accurate prediction is similarly much needed for detergent applications [2,7, 18,69]. The level and nature of hardness in household water varies extensively from one location to another, as do the conditions under which consiuners expect effective laundering to occur (e. g. temperature). Thus accurate selectivity data (i.e. isotherms and selectivity plots as a function of loading), and reliable predictive models that are simple to use, are important, since it would clearly be impossible to measure directly the performance of a given builder zeolite for all conceivable situations. Successful predictions have been achieved for the binary Na/Ca-A, Na/Mg-A and Ca/Mg-A systems [2,18,69] as well as for the corresponding ternary system [2,69]. Similar successful predictions were recently achieved also for zeolite MAP [7] once the original iterative procedures of Franklin and Townsend [69] had been modified appropriately. Figures 7 and 8 show examples of such successful predictions in A, for both the binary and ternary cases. 

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