CHLORIDE EFFECTS ON THE SPECIATION AND PARTITIONING OF HEAVY-METAL DURING THE MUNICIPAL SOLID-WASTE INCINERATION PROCESS

This study examines the effects of chloride on the partitioning and sp eciation of heavy metal during waste combustion by using simulated mun icipal solid wastes (MSW). The results indicate that increasing the ch loride content of the waste and the combustion temperature may cause t he formation of volatile heavy metal compounds, thus increasing metal partitioned to the fly ash and the flue gases. As identified by X-ray diffraction (XRD), speciation is found to be primarily influenced by t he reactive affinity of the heavy metals, the types of chlorides, and the metal concentrations in the waste. (C) 1997 Elsevier Science B.V.