Manganese dioxide is used to: manufacture ferroalloys; manufacture dry cell batteries (it's a depolarizer); to "decolorize" glass; to prepare some chemicals, like oxygen and chlorine; and to dry black paints.    From Wordnik.com.  [Manganese] Reference

Saliva contains an enzyme that will decolorize blood and remove fresh bloodstains.    From Wordnik.com.  [Quilts Are Forever] Reference

The chlorine and oxygen will combine their action to decolorize the textile material.    From Wordnik.com.  [Scientific American Supplement, No. 401, September 8, 1883] Reference

Import it into Photoshop, or similar, then decolorize it, turn up the contrast and lightness accordingly.    From Wordnik.com.  [EXTRALIFE – By Scott Johnson - Comic coming a tad late] Reference

Make a ten per cent infusion of the suspected coffee; filter it, and decolorize the solution by boiling it with a piece of animal charcoal.    From Wordnik.com.  [The Home Medical Library, Volume V (of VI)] Reference

Animal charcoal possesses to a remarkable degree the property of removing color from solutions of animal and vegetable substances, and it is used for this purpose to a large extent by sugar refiners, who thus decolorize their dark brown sirups; in the manufacture of glucose and saccharums for brewers 'use, the concentrated solutions have to be filtered through layers of animal charcoal in order that the resulting product may be freed from color.    From Wordnik.com.  [Scientific American Supplement, No. 288, July 9, 1881] Reference

The sulfur dioxide serves to decolorize the juice.    From Wordnik.com.  [Citizendium, the Citizens' Compendium - Recent changes [en]] Reference

Simultaneously, these same ingredients also react with soil and organic materials causing them to either decolorize or disintegrate.    From Wordnik.com. Reference

The only other large use of arsenic is in the glass industry, arsenic trioxide being added to the molten glass to purify and decolorize the product.    From Wordnik.com.  [The Economic Aspect of Geology] Reference

Ozone systems disinfect, deodorize, decolorize and remove organic matter with far greater oxidizing power than chlorine, while producing harmless oxygen as the only by-product.    From Wordnik.com.  [Business Wire Travel News] Reference

But although Scheele first pointed out the bleaching quality of his newly discovered gas, it was the French savant, Berthollet, who, acting upon Scheele's discovery that the new gas would decolorize vegetables and flowers, was led to suspect that this property might be turned to account in destroying the color of cloth.    From Wordnik.com.  [A History of Science: in Five Volumes. Volume IV: Modern Development of the Chemical and Biological Sciences] Reference

A depolarizer); to "decolorize" glass; to prepare some chemicals, like oxygen and chlorine; and to dry black paints.    From Wordnik.com.  [Featured Articles - Encyclopedia of Earth] Reference

It may decolorize the color.    From Wordnik.com.  [TravelPod.com TravelStream™ — Recent Entries at TravelPod.com] Reference