Answered: Concentration, ppm Мах. for Ground-…

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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Question

Groundwater at a rate of 1,500 gpm, containing three volatile organic compounds (VOCs), is to be stripped in a trayed tower with air to produce drinking water that will meet EPA standards. Relevant data are given below. Determine the minimum air flow rate in scfm (60^oF, 1 atm) and the number of equilibrium stages required if an air flow rate of twice the minimum is used and the tower operates at 25^oC and 1 atm. Determine the composition in parts per million (ppm) for each VOC in the resulting drinking water."

Concentration, ppm
Мах. for
Ground-
Drinking
Component
K-value
water
water
1,2-Dichloroethane (DCA)
60
85
0.005
Trichloroethylene (TCE)
1,1,1-Trichloroethane (TCA)
650
120
0.005
275
145
0.200
Note: ppm = parts per million by weight.

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