Elementary Principles 134 - 5.40 (cont'd) Product gas...

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5- 22 5.40 (cont’d) Product gas volume .0254 kmol 22.4 m STP 283K bars 273K m 3 3 == 0 10132 40.0 bars 0 0149 bg . . b. 20 0 0 0277 0 0909 58 08 0 196 kg .. . . m effluent kmol feed kmol Ac kg Ac h .0149 m effluent kmol feed kmol Ac Ac h 3 3 = 5.41 Basis: 1.00 10 gal. wastewater day. Neglect evaporation of water 6 × . 100 10 6 . × gal / day Effluent gas: 68 F, 21.3 psia(assume) D 12 13 (lb-moles H O/day) 0.03 (lb-moles NH /day) n n ± ± 2 33 (lb-moles air/day) (lb-moles NH /day) n n ± ± 300 10 6 × ft air / day 3 Effluent liquid 2 68 F, 21.3 psia n D ± 43 n n ± ± a . Density of wastewater: Assume lb ft m 3 ρ = 62 4 3 12 m 1 m 3 m 3 m 6 lb-moles H O 18.02 lb 0.03 lb NH 17.03 lb 1 ft 7.4805 gal day 1 lb-mole day 1 lb-mole 62.4 lb 1 ft gal 1.00 10 day nn ⎡⎤ ⎢⎥ ⎣⎦ ±± 5 4.50 10 lb-moles H O fed day n ± , 4 0.03 1.35 10 lb-moles NH fed day n ± () 63 6 2 3
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