(a) Use the correlation in Fig. 25.4 to predict the amount of n-butanol adsorbed on carbon for...

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(a) Use the correlation in Fig. 25.4 to predict the amount of n-butanol adsorbed on carbon for the conditions of Example 25.2, and compare with the experimental data. 

(b) Estimate the saturation capacity of the carbon for a butanol concentration of 20 ppm in air at 30°C and 1 atm.

Fig. 25.4

Volume adsorbed, cm lig/100 g 100 50 20 10 S 2 0 5 n-paraffins C to Co CH CHCH 10 15 T/V logiclf/f) HS, CS,

Example 25.2

The adsorption of n-butanol from air was studied in a small fixed bed (10.16-cm diameter) with 300 and 600 g carbon, corresponding to bed lengths of 8 and 16 cm. 

(a) From the following data for effluent concentration, estimate the saturation capacity of the carbon and the fraction of the bed used at c/cn-0.05. 

(b) Predict the break-point time for a bed length of 32 cm.

Data for n-butanol on Columbia JXC 4/6 carbon are as follows:

= 58 cm/s C = 365 ppm T = 25C P = 737 mm Hg D, = 0.37.20 S = 1,194 mlg P = 0.461 g/cm &=0.457

1, h T 1.5 2 2.4 2.8 3.3 45 mun 300 g 0.005 0.01 0.027 0.050 0.10 0.20 67/0 0.56 f, h 5 5.5 6 6.5 7 75 8 8.5

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Unit Operations Of Chemical Engineering

ISBN: 9780072848236

7th Edition

Authors: Warren McCabe, Julian Smith, Peter Harriott

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