Seawater of salinity 35,000 ppm at 35oC enters a membrane module of area 1 m2 at...
Seawater of salinity 35,000 ppm at 35oC enters a membrane module
of area 1 m2 at a flow rate of 36,000 m3/d. 75% of the flow rate of
the seawater feed is retained in the brine reject. If the salt
rejection is 99%, calculate:
a) Permeatesalinity
b) Brine salinity
c) Salt passage
d) Recoveryratio
e) Osmoticpressureoffeedseawater
f) Salt flux through membrane
-6 3 2
Salt permeability = 2.03x10 m /m .s
Assume density of seawater is 1000 g/L
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Seawater of salinity 35,000 ppm at 35oC enters a membrane module
of area 1 m2 at...
Design a single stage RO desalination system by calculating the permeate salinity, the brine salinity, the brine flow rate, and the membrane area. Analyze the following cases: Data Water permeability is 2.05xl0-6 m3/m2 s kPa Salt permeability is 2.03x1
Design a single stage RO desalination system by calculating the permeate salinity, the brine salinity, the brine flow rate, and the membrane area. Analyze the following cases:DataWater permeability is \(2.05 \times 10-6 \mathrm{~m} 3 / \mathrm{m} 2 \mathrm{~s} \mathrm{kPa}\)Salt permeability is \(2.03 \times 10-5 \mathrm{~m} 3 / \mathrm{m} 2 \mathrm{~s}\)Feed salinity is 34,000 ppm Feed flow rate: \(2.5 \mathrm{~kg} / \mathrm{s}\) Permeate flow rate: \(1 \mathrm{~kg} / \mathrm{s}\) Feed pressure: \(6000 \mathrm{kPa}\) Reject pressure: \(5800 \mathrm{kPa}\) Permeate pressure: \(101 \mathrm{kPa}\)
Membrane Separation II Reverse Osmosis (a) Derive van't Hoff's equation (osmotic pressure π-CRT). (b) A feed solution containing 5g NaCl/L (ρ-1001kg/m3) is purified using a reverse osmosis sy...
Membrane Separation II Reverse Osmosis (a) Derive van't Hoff's equation (osmotic pressure π-CRT). (b) A feed solution containing 5g NaCl/L (ρ-1001kg/m3) is purified using a reverse osmosis system. Water permeability constant (Aw) and a solute (NaCI) permeability constant (As) are 5 x 10 kg/m2s atm, and 4 x 10-7m/s, respectively. AP 30 atm. Assume that the fraction recovered of the solvent water is 0.15. The flow rate q2 of the permeate water solution is 50 L/min. Calculate ci and c2...
Assume anything to solve the problem A single-effect thermal vapor-compression system is designed at the following operating conditions .Boiling temperature, of 75 °C Compression ratio, of 2.5...
Assume anything to solve the problem
A single-effect thermal vapor-compression system is designed at the following operating conditions .Boiling temperature, of 75 °C Compression ratio, of 2.5 Motive steam pressure, of 750 kPa. .Brine reject concentration, of 70 000 ppm .Intake seawater salinity of 42 000 ppm .Intake seawater temperature, of 25 °C .System capacity, of 1 kg/s .Feed seawater temperature, of 70 °C Condenser efficiency, of 0.9. Consider the losses associated with the demister equal to 340 Pa/m Find:...
13.9-2 (From Geankpolis 4th edition) A cellulose acetate-membrane with an area of 4.0 x 10-3m^2 is...
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Membrane Separation II Reverse Osmosis (a) Derive van't Hoff's equation (osmotic pressure π-CRT). (b) A feed solution containing 5g NaCl/L (ρ-1001kg/m3) is purified using a reverse osmosis system. Water permeability constant (Aw) and a solute (NaCI) permeability constant (As) are 5 x 10 kg/m2s atm, and 4 x 10-7m/s, respectively. AP 30 atm. Assume that the fraction recovered of the solvent water is 0.15. The flow rate q2 of the permeate water solution is 50 L/min. Calculate ci and c2...
Assume anything to solve the problem
A single-effect thermal vapor-compression system is designed at the following operating conditions .Boiling temperature, of 75 °C Compression ratio, of 2.5 Motive steam pressure, of 750 kPa. .Brine reject concentration, of 70 000 ppm .Intake seawater salinity of 42 000 ppm .Intake seawater temperature, of 25 °C .System capacity, of 1 kg/s .Feed seawater temperature, of 70 °C Condenser efficiency, of 0.9. Consider the losses associated with the demister equal to 340 Pa/m Find:...
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