14.5·The following data were obtained in an experiment to determine the phosphor

Question

14.5·The following data were obtained in an experiment to determine the phosphorus (phosphate) sorption characteristics of sediment from a lake. Solutions were buffered to maintain constant pH of 7.0 and constant ionic strength of I = 0.01. The total amount of sediment in each flask was 1.25 g (dry wt.), and the volume of the solution was 100 mL. Pi.eq is the amount of dissolved phosphate-P remaining in solution after equilibration with the sediment. P,init (g/L) 60 100 125 240 450 850 Peq (Hg/L) 40 65 90 195 388 765 Determine whether the data fit the Langmuir and Freundlich isotherms and determine the parameters of the sorption equations. Which of the two models would you select to portray the sorption results?

Explanation / Answer

According to langmuier equations how much no of molecules adsrob on the surfaces of adsorbent .but in frendulich isothetm it depnd on initial pressure

At low pressure the mass of adsorbent concenteration is low .but high it will high

BET equation is more helpful to this sorption result

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