Volatile Organic Compounds in Printed Papers and Measures for Removal in Recovered Paper Processing, 2010 TAPPI PEERS Conference

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Newspapers and magazines are important components of different recovered paper grades in Europe. Depending on the applied printing processes and printing inks the printed products contain different amounts of volatile organic compounds. To some extent these compounds affect as contaminants the quality of the fiber stock suspension and the produced recycling paper and board. In the current research work of PMV different printed newspapers, magazines, various recovered paper grades and recycling papers have been investigated concerning their amount and the identity of volatile compounds. The method of analysis is based on the thermodesorption of paper and following GC/MS analysis. The experimental results showed significant differences in the amount of volatile compounds and the emission potential of different printed products. For black and colored printed newspaper samples (offset printed) the SVOC values (given as sum parameter TSVOC) vary between 3,300 to > 9,000 µg/g paper. Hydrocarbons, saturated alkanes and cycloalkanes, and other solvents were identified as a main source of the SVOC. Different processes of recovered paper processing have been evaluated regarding their potential of removing detrimental organic compounds from the fiber suspensions. The processes of flotation and wash deinking are effectively in the reduction of volatile compounds but connected with significant fiber losses.