A plate tower providing six equilibrium stages is employed for stripping ammonia from a waste water stream by means of countercurrent air at atmospheric pressure and 25 °C. Calculate the concentration of ammonia in the exit water if the inlet liquid concentration is 0.1 mole% ammonia in water, the inlet air is free of ammonia and 2,000 standard cubic meter (1 atm, 25 °C) of air are fed to the tower per m3 of waste water. The absorption equilibrium at 25 °C is given by the relation yNH3 = 1.414 xNH3. Mwater = 0.018 kg mol−1 ; ρwater = 1,000 kg m−3 ; R = 8.314 J mol−1 K−1 ; 1atm = 1.01325 bar.
A plate tower providing six equilibrium stages is employed for stripping ammonia from a waste water stream by means of countercurrent air at atmospheric pressure and 25 °C. Calculate the concentration of ammonia in the exit water if the inlet liquid concentration is 0.1 mole% ammonia in water, the inlet air is free of ammonia and 2,000 standard cubic meter (1 atm, 25 °C) of air are fed to the tower per m3 of waste water. The absorption equilibrium at 25 °C is given by the relation yNH3 = 1.414 xNH3. Mwater = 0.018 kg mol−1 ; ρwater = 1,000 kg m−3 ; R = 8.314 J mol−1 K−1 ; 1atm = 1.01325 bar.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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A plate tower providing six equilibrium stages is employed for stripping ammonia from a waste water stream by means of countercurrent air at atmospheric
pressure and 25 °C. Calculate the concentration of ammonia in the exit water if
the inlet liquid concentration is 0.1 mole% ammonia in water, the inlet air is
free of ammonia and 2,000 standard cubic meter (1 atm, 25 °C) of air are fed to
the tower per m3 of waste water. The absorption equilibrium at 25 °C is given by
the relation yNH3 = 1.414 xNH3.
Mwater = 0.018 kg mol−1
; ρwater = 1,000 kg m−3
; R = 8.314 J mol−1 K−1
; 1atm = 1.01325 bar.
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