What actually is electrically charged water?
19 October 2011, 11:49 CET ( by Alfred Kärcher GmbH & Co. KG ) 5 Comments »
The production of Tennant’s “processed water” as described in the brochure can be summarised as follows. An electric current from an electrolytic cell in the scrubber-driers used to break down tap water enriched with oxygen into acid and alkaline parts (ionisation). As soon as it comes into contact with the surface to be cleaned, this so-called “electrically activated water” is said to break down dirt into smaller particles and dislodge it from the floor. It is claimed that after about 45 seconds this “activated” water turns back into normal water. All that remains in the machine’s dirty water tank is dirt and water.
Technically, water can indeed be ionised for a very, very short time in an electrolytic cell. However, ions characteristically combine into a neutral water molecule again immediately, within nanoseconds. The water is then back in its original state as far as its cleaning effect is concerned and no longer has any detergent properties.
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Tennant’s earlier claim, which can still be seen at http://www.foodprocessing.com.au/products/24587-Electrically-activated-water, that their water “works by unlocking the energy stored in the water molecule” is clearly over-hype, and saying that it acts “like a powerful detergent without any added chemicals” is misleading. But the above statement from Kaercher fails to adequately explain the meaning of “electrically activated water” as it is commonly understood.
As I explain at http://www.chem1.com/CQ/ionbunk.html#EOW, this is simply an electrolysis process that produces a dilute hypochlorite solution which, like any alkaline solution, can solubilize hydrophobic particles; also, the hypochlorous acid component is an effective disinfectant. Whether the resulting solution is sufficiently concentrated to be effective, or could be less expensively obtained in the form of ordinary commercial laundry bleach, remain valid questions.
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