Selasa, 07 Desember 2010

What Chemicals do Reverse Osmosis Remove/Reduce?

Reverse osmosis will generally remove any molecular compounds smaller in size than water molecules. Such compounds include salt, manganese, iron, fluoride, lead, and calcium (Binnie et al, 2002). Reverse osmosis is extremely efficient at stripping minerals from water, and it is highly valued as a water purification process in the printing industry, in which mineral-free water must be used.

Although reverse osmosis supplies useful, mineral-free water for printing purposes, it does not provide the healthiest drinking water. Reverse osmosis will remove several mineral and chemical materials from water, including salt, fluoride, lead, manganese, iron, and calcium. Reverse osmosis, because it removes minerals according to physical size, is non-selective in its removal of dangerous and beneficial minerals. 
Clearly, mineral contaminants like salt, fluoride, and lead should be removed from drinking water, but minerals like iron and manganese, because they are essential to natural body processes and important components of drinking water, should be left in that water. Iron builds and maintains healthy red blood cells while manganese helps in regulating protein, fat, and carbohydrate metabolism. Manganese, like calcium, is also an essential component in the building of bones and the clotting of blood. Though many foods contain these minerals, drinking water can and should be a major source for their intake.

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