METHOD FOR ERASING FLUORESCENCE FROM WASTE PAPER OR WASTE PAPER PULP

摘要

PPROBLEM TO BE SOLVED: To provide a method for fully erasing fluorescence and causing no formation of AOX(adsorbing organic halogen compound) and/or halogen gas and therefore free from environmental burden in the recycling treatment of fluorescent brightener-containing waste paper. PSOLUTION: The method for erasing fluorescence from waste paper or waste paper pulp involves the following process. In any step of the recycling treatment of fluorescent brightener-containing waste paper, a peroxodisulfate and phosphoric acid, or a peroxodisulfate and a phosphate are used. PCOPYRIGHT: (C)2009,JPO&INPIT