Ozone was discovered by "Christian
Schonbein" in the 1840's. It smelled while he was doing experiments on
the electrolysis of water at the University of Basel that Schönbein
first began to notice a distinctive odor in his laboratory. This smell gave
Schönbein clue to the presence of a new product from his experiments.
Because of the pronounced smell, Schönbein coined the term 'ozone' for
the new gas, from the Greek word 'ozein', which means 'to smell' because of
its peculiar odor.
He later found that the smell of ozone was
similar to that produced during lighting or thunderstorm.
He also discovered the gas was
positively charged and that it resembled chlorine and bromine in its
chemical properties.
1785: Odor of ozone gas is
recognized emanating from electrical machinery.
1840: Schonbein discovers ozone
and quantifies its properties.
1886: The ability of ozone to
disinfect polluted water is recognized in Europe.
1891: Test results from Germany
show that ozone is effective against bacteria.
1893: First full-scale application
using ozone for drinking water in the Netherlands.
1906: Nice, France commission's
first municipal ozone plant for drinking water.
1909: Used as food preservative
for Meat cold storages.
1915: At least 49 major ozone
installations were on line throughout Europe.
1939: Was found to prevent the
growth of yeast & mold during the storage of fruits.
1957: Ozone is implemented for
oxidation of iron and manganese in Germany.
1964: Spontaneous flocculation in
ozone contact chambers led to France constructing an ozone plant to
enhance particulate removal.
1965: Scotland employs ozone for
color control in surface water. Switzerland uses ozone to oxidize micro
pollutants such as phenol compounds and several pesticides.
1970: French exploit use of ozone
for algae control.
1982: FDA GRAS (Generally Regarded
As Safe) declaration for ozone use in bottled water.
1995: FDA GRAS (Generally Regarded
As Safe) for use in bottled water renewed without change
1997: City of Los Angeles 600 MGD
Ozonation plant comes on line after 7 years of pilot testing.
2000: A Food Additive Petition
(FAP) requesting FDA approval of ozone as an antimicrobial agent for
direct contact with foods was submitted in August and was approved by
the FDA in 2001.
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