M3-Extraction (Chemical Engineering Lab.2)

(15 p) 2. Benzoic acid is extracted from water by means of pure kerosene in a pulsed perforated plate column (height of 1 m) working counter-currently. The concentration of benzoic acid at the inlet and exit streams is determined by titration method using 0.01 mol/L NaOH solution. 10 mL sample is taken from each stream for the titration and the results for both phases obtained are as follows: = 2.5 mL V (inlet water) = 22.13 mL; V (outlet water) V (outlet kerosene) = 20.5 mL If the equilibrium line equation is C, = 1.2 Cx. where Cs and Cy are concentrations of benzoic acid in water (kg BA/m H2O) and kerosene (kg BA/m2 kerosene). respectively: a) Find the number of stages (NTS) present in the column b) Find the height equivalent to a theoretical stage (HETS). Data (MW)bende acid= 122 kg/kmole (MW) keronene= 168 kg/kmole Avater= 1000 kg/m3 Perosene = 760 kg/m