Chlorine dioxide is also used in bleaching paper and purifying water.
Xylanases are actively used in practice to improve the properties of animal feed, in the baking industry, and for bleaching paper pulp (Harris and Ramalingam 2010; Beg et al. 2001).
The chlorine was used for bleaching paper (hence the location of many of these plants near paper mills) while the sodium was used to make sodium hydroxide for soaps and other cleaning products.
And you can read this only because printer's ink absorbs visible light and bleached paper reflects it – both of these of the sun's making.
These are stores that once philosophically opposed a long list of ingredients and products: refined sugar, white flour, synthetic sweeteners, caffeine, alcohol, hydrogenated oil, growth-promoting drugs, bleached paper, preservatives, artificial colors or flavors, irradiated food, products tested on animals, genetically engineered ingredients.
In an ironic twist, the 5-year-old poplars had been engineered to help lessen the amount of chlorine needed to bleach paper.
They can emit corrosives such as HCl and traces of highly toxic dioxins and furans if chlorine-containing materials such as PVC or bleached paper are in the feed stream.
Another large forest products company, Atlanta-based Georgia Pacifinishedently finished converting its kraft paper mill in Crossett, Ark., to manufacture bleached paper products.
Champion is also spending more than $200 million to convert a kraft paper plant in Pensacola, Fla., to make more lucrative bleached paper products for office supplies and other use.
The thermal conversion process converts plastics, hospital wastes, diseased cattle, feedlot manure, bleached paper, yard waste, agricultural waste, forestry waste, cardboard, used tires, municipal solid waste, trash, sewage sludge and even anthrax into oil an non-toxic useful products including biogas.
These enzymes are industrially of importance as food and feed additives, but are also part of a system that is used to bleach paper pulp.
