Investigations on the Behaviour of Undesirable Constituents, 2007 TAPPI 8th Research Forum on Recycling

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In this paper comparison of the amounts of different organic and inorganic substances in recycling papers manufactured in 1991 and in 2005 in Germany is described. To evaluate the accumulation of hydrophobic compounds in paper produced of 80 to 100 % recovered paper, 15 paper samples (Graphic paper, Tissue paper, Packaging paper) were investigated regarding their chemical constituents. The amount of halogenated organic compounds and other harmful organic and inorganic substances in the paper samples from 2005 are of a lower or equal level as 1991. An enrichment of undesirable constituents due to repeated recycling of fibres could not be stated.