Contents Analysis of PFCAs and PFSAs in Incineration Fly Ash

Abstract

Perfluoroalkyl carboxylic acids(PFCAs) and Perfluoroalkyl sulfonic acids(PFSAs) are detected in leachate from landfills in Japan. It is suspected that these come from incineration residues, but it is not clear to how much they are actually contained in PFCAs and PFSAs. In this study, we conducted content tests of PFCAs and PFSAs in various types of incineration fly ashes, including thermal recycle residues, based on the content test procedures established in a previous study. The content tests were conducted on a total of 15 types of ashes. The total content ranged from 0.01 to 1.21 ng/g for industrial waste incineration fly ash and 0.18 to 0.77 ng/g for municipal solid waste incineration fly ash, in order to discuss the trends by waste type, it is necessary to increase the number of samples. In addition, there were no clear differences among furnace types, acidic flue gas treatment methods, and thermal recycle residues in municipal solid waste.