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Problem 1 Area of Reverse Osmosis Membrane: RO will be used to concentrate NaCl in a 0.3% (w/v) salt water to 6% (w/v) and generate clean drinking water. The RO membrane has a water permeability (Aw) of 1.0 L water/m²-h-atm and shows 98% rejection of NaCl. The retentate and permeate are well-mixed. a. Calculate the area of the RO membrane needed to process 1,500 L of salt water per hour in a continuous process at 298 K and with a AP of 110 atm. Show your assumptions used in your calculation and the process conditions. The molecular weight of NaCl is 58.45 g/g- mole; and the density of the permeate is identical to that of water. b. Now determine the area of the RO membrane needed if 18,000 L of saltwater are processed every hour in a batch RO process at the same temperature and pressure differences. 9f C₁ P₁ 919ƒ (1-0) C₂ P2 92=0·95

Problem 1 Area of Reverse Osmosis Membrane: RO will be used to concentrate NaCl in a 0.3% (w/v) salt water to 6% (w/v) and generate clean drinking water. The RO membrane has a water permeability (Aw) of 1.0 L water/m²-h-atm and shows 98% rejection of NaCl. The retentate and permeate are well-mixed. a. Calculate the area of the RO membrane needed to process 1,500 L of salt water per hour in a continuous process at 298 K and with a AP of 110 atm. Show your assumptions used in your calculation and the process conditions. The molecular weight of NaCl is 58.45 g/g- mole; and the density of the permeate is identical to that of water. b. Now determine the area of the RO membrane needed if 18,000 L of saltwater are processed every hour in a batch RO process at the same temperature and pressure differences. 9f C₁ P₁ 919ƒ (1-0) C₂ P2 92=0·95

Introduction to Chemical Engineering Thermodynamics
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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The topic for this question is separation process: diffusion models (fluxes during reverse osmosis)

Problem 1 Area of Reverse Osmosis Membrane: RO will be used to concentrate NaCl in a 0.3% (w/v) salt water to 6% (w/v) and generate clean drinking water. The RO membrane has a water permeability (Aw) of 1.0 L water/m²-h-atm and shows 98% rejection of NaCl. The retentate and permeate are well-mixed. a. Calculate the area of the RO membrane needed to process 1,500 L of salt water per hour in a continuous process at 298 K and with a AP of 110 atm. Show your assumptions used in your calculation and the process conditions. The molecular weight of NaCl is 58.45 g/g- mole; and the density of the permeate is identical to that of water. b. Now determine the area of the RO membrane needed if 18,000 L of saltwater are processed every hour in a batch RO process at the same temperature and pressure differences. 9f C₁ P₁ 919ƒ (1-0) C₂ P2 92=0·95
Transcribed Image Text:Problem 1 Area of Reverse Osmosis Membrane: RO will be used to concentrate NaCl in a 0.3% (w/v) salt water to 6% (w/v) and generate clean drinking water. The RO membrane has a water permeability (Aw) of 1.0 L water/m²-h-atm and shows 98% rejection of NaCl. The retentate and permeate are well-mixed. a. Calculate the area of the RO membrane needed to process 1,500 L of salt water per hour in a continuous process at 298 K and with a AP of 110 atm. Show your assumptions used in your calculation and the process conditions. The molecular weight of NaCl is 58.45 g/g- mole; and the density of the permeate is identical to that of water. b. Now determine the area of the RO membrane needed if 18,000 L of saltwater are processed every hour in a batch RO process at the same temperature and pressure differences. 9f C₁ P₁ 919ƒ (1-0) C₂ P2 92=0·95
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