Ink must be removed from the paper during the recycling process. After the paper is ground into pulp it goes through a deinking process. During this process all ink, glue, and other sticky material is removed from the pulp. This usually occurs by dunking the pulp into a container full of water and injecting “surfactants” into the mixture. This injection causes the ink chemicals to rise to the top of the mixture and create a layer of foam. The foam, containing the chemicals, is then scooped away.
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