Question 4: The salinity of sea water is 10,000 ppm TDS (total dissolved salts) is to be desalinated by a reverse osmosis membrane at 25°C. Calculate: 1) The hydrostatic pressure difference The water flux. i 2) 3) The salinity of seawater in Bahrain is 20,000 ppm TDS. As a chemical engineer, what are the consequences of using the same membrane in one of the RO plants. [ Additional data: EPA drinking water standard (TDS) = 400 ppm Desalinated water density, Cw2 997 kg/m³ Water permeability constant, A.-4.81*10* kg/s/m²/atm Solute permeability constant, A.-4.42*10*7 m/s Conversion factor: 101.3 kPa = 14.7 psi An approximate relationship between osmotic pressure and TDS is as follows: Osmotic Pressure (psi) = TDS (ppm)/100. B=A R=S- = B(AP-AR) 1+B(AP-Art) Ag-CW₂ N-A (AP-AT)

Question 4: The salinity of sea water is 10,000 ppm TDS (total dissolved salts) is to be desalinated by a reverse osmosis membrane at 25°C. Calculate: 1) The hydrostatic pressure difference The water flux. i 2) 3) The salinity of seawater in Bahrain is 20,000 ppm TDS. As a chemical engineer, what are the consequences of using the same membrane in one of the RO plants. [ Additional data: EPA drinking water standard (TDS) = 400 ppm Desalinated water density, Cw2 997 kg/m³ Water permeability constant, A.-4.8110 kg/s/m²/atm Solute permeability constant, A.-4.42107 m/s Conversion factor: 101.3 kPa = 14.7 psi An approximate relationship between osmotic pressure and TDS is as follows: Osmotic Pressure (psi) = TDS (ppm)/100. B=A R=S- = B(AP-AR) 1+B(AP-Art) Ag-CW₂ N-A (AP-AT)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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