Maybe you have wondered how reverse osmosis works? How it really purifies water? It may sound like a mouthful but the procedure is easy. To fully understand what it does, nevertheless, you must first understand what osmosis is.
In osmosis, when two salt solutions of different concentrations are separated by a semi-permeable membrane, water will transfer from the poorer solution to the more powerful one until both have the exact same salt concentration. In reverse osmosis water filters or ultra filtration, the opposite is true. The natural flow of water is reversed and it goes from the more powerful solution to the poorer one. When this occurs, you’ve got water without salt on one side of the membrane.
In 1748, the French physicist, Jean-Antoine Nollet, found the process of osmosis through a semi permeable natural membrane. It was not until 1949, that the University of California at Los Angeles (UCLA) first started experimenting with a job to create fresh water on large scale through the desalinization of seawater using reverse osmosis water filters. By the mid-1950’s, both UCLA and the University of Florida laboratories were successfully created freshwater from seawater.
Although this common approach was first used in desalination or removing salt from sea water to get fresh water, reverse osmosis continues to be used since the 1970s to purify water for medical, industrial and domestic use. This procedure can improve the flavor, color and odor of water. Furthermore, reverse osmosis system can remove contaminants and reduce high amounts of nitrate, sulfate and sodium.
Describing the procedure on a scientific level, a reverse osmosis water filters is basically a microscopic porous filter through which a solvent (like water) and specific-sized molecules and can stream back and forth through. The small pores of the membrane prevent specific bigger compounds including salt and other natural minerals from flowing through it. Much of this has to do with the concentration of the water or solution.
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