How the BIOFILTER works: High performance triple filtration Technology
FILTRATION 1: Pre-filtration: Spunbond (made with thermally welded filaments, 100% polypropylene) mixed with Aqualen® fiber. Sediment filter which retains particles of iron, sand and neutralizes the development of germs, bacteria etc … and protects the activated carbon block
FILTRATION 2:The Carbon Fiber Block (patent no. 2282494) is composed of activated carbon in sintered granules (porosity 20 µm) and Aqualen® fiber. Activated carbon is obtained after calcination of coconut shells by injection of pressurized water vapor = The pollutants are retained in the activated carbon by a physical phenomenon of fixing organic polluting molecules on its porous surface (micropores: microscopic alveoli < 2 nm) by weak bonds (van der Waals forces: attractive bond force due to low intensity electrical interaction) between activated carbon (negatively charged -) and pollutants (mainly those with weak polarity or non-polar = not soluble in water); the activated carbon is regenerated by oxidation.
FILTRATION 3: Aqualen® porous fiber (US patent 6514413 ; fiber with a diameter of 10 µm), mixed with activated carbon. This fiber resembles the roots of a tree which bind the granules of activated carbon into a dense structure. Its function is threefold, it:
allows to have a very large adsorption surface, i.e. 1,000 m2 / g (33 times greater than that of conventional filters), that is to say a good distribution of water over the entire surface of the activated carbon (this avoids preferential water channels)
physically retains pollutants in its structure up to diameters of 5 µm (physical filtration of heavy metals, bacteria, arsenic and parasites)
incorporates in its structure ionized silver (negatively charged) which is bactericidal (neutralizes microorganisms, antibiotics, etc.), the silver is therefore not mixed with the activated carbon but retained in the microfiber
