An all too common sight - the car park oil sheen rainbow (Photo: crabchick via flickr)
Andy Hong and a chemical reactor similar to the one used to develop and test a new method for removing pollutants, including oil sheen, from water and, in some cases, soil
The rainbow effect caused by varying thicknesses of oil film on water’s surface might be pretty to look at but is indicative of polluted water. This “oil sheen” proves especially difficult to remove, even when the water is aerated with ozone or filtered through sand. But now a University of Utah engineer has developed an inexpensive new method to remove oil sheen by repeatedly pressurizing and depressurizing ozone gas, creating microscopic bubbles that attack the oil so it can be removed by sand filters.
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