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Reverse Osmosis
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- 2. objectives • Able toacknowledge the fundamental of reverse osmosis • Able to acknowledge the basic effect of reverse osmosis
- 3. Fig 3 3Dr. OlaAbdelwahab
- 4. What is ReverseOsmosis? Movement of high concentration liquid into lower concentration under pressure through a semi- permeable membrane
- 6. Reverse Osmosisis the process of Osmosis in reverse. To reverse the process of osmosis you need to apply energy to the more saline solution. A reverse osmosis membrane is a semi-permeable membrane that allows the passage of water molecules but not the majority of dissolved salts, organics, bacteria and pyrogens by applying pressure When pressure is applied to the concentrated solution, the water molecules are forced through the semi-permeable membrane and the contaminants are not allowed through.
- 7. How does ROwater works?
- 8. What will ROremove from water? 99%+ of the dissolved salts (ions), particles, colloids, organics, bacteria and pyrogens from the feed water.
- 9. Factors affecting systemand process performance Temperature -The higher the temperature, the lower viscosity, so the higher the permeate flow Pressure - The higher the pressure, the higher the permeate flow Salt concentration - The higher the salt concentration, the lower the quality of permeable water.
- 10. Application in industry? Food Industry o More economical operation for concentrating food liquids (such as fruit juices) than conventional heat-treatment processes Drinking water purification o Production of bottled mineral water Dairy industry o For the concentration of milk to reduce shipping costs.