LEACHING BEHAVIOR OF PERSISTENT ORGANIC POLLUTANTS (POPS) IN SHREDDERRESIDUES

It is well known that some kinds of waste contain persistent organic p ollutants (POPs) such as PCDD/DFs and PCBs. Leaching behaviors of thes e chemicals, however, have not been focused so much because of their l ow leachability. On the other hand, shredder residues originated from automobiles and electric appliances consist mainly of plastics, such a s PVC, which contain additives including DEHP. In this study, contents analyses and leaching tests with and without surfactant-like substanc es for shredder residues were conducted. As a result, shredder residue s from automobile and electric appliance contained PCBs in ppm level a nd a quantity of PCDD/DFs. Surfactant-like substances increase the lea ching concentration of POPs. DEHP also leached out considerably even t hough using distilled water. (C)1998 Elsevier Science Ltd. All rights reserved.