Reverse osmosis
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Reverse osmosis is a water purification process that uses a semi-permeable membrane to separate water molecules from other substances. RO applies pressure to overcome osmotic pressure that favors even
RO production train, North Cape Coral Reverse Osmosis Plant
The layers of a membrane
Cutaway of a 16" RO tube
Schematic of a RO desalination system using an energy recovery pump. 1: Sea water inflow (100%, 1 bar), 2: Sea water flow (100%, 50 bar), 3: Concentrate flow (60%, 48 bar), 4: Fresh water flow (40%, 1 bar), 5: Concentrate to drain (60%,1 bar), A: Pressure recovery pump, B: Osmosis unit with membrane
Osmosis
Videos
Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane from a region of high water potential to a region of low water potential, in the direction that te
Reverse osmosis
…what passes through. "Selective" membranes reject large molecules, while accepting smaller molecules (such as solvent molecules, e.g., water). Reverse osmosis is most commonly known for its use in drinking water purification from seawater, removing the salt and other effluent materials from the water molecules…
The process of osmosis over a semipermeable membrane. The blue dots represent particles driving the osmotic gradient.
Raisin swells due to osmosis when kept under water