Controlling reactions during heavy metal leaching from municipal solid waste incineration fly ash

This research aimed to characterize the physical and chemical properties of municipal solid waste (MSW) incineration fly ash, as well investigate leaching heavy metals during toxicity characteristics procedure (TCLP) process. To understand behaviour, concentrations metals, chloride, sulphate calcium at various leaching, time was monitored together with pH solution. Results showed that compositions ashes led differences in environment. For two under study, one resulted a environment 10?12 while other had about 6?7. Based on pH, anions cations concentrations, Minteq software employed speciation metals. shift precipitation/dissolution balance carbonate hydroxides could explain fluctuation metal process, which indicates probably controlled by these reactions. On hand, addition EDTA changed controlling Chelating reactions between much higher due presence showing chelating organics natural may facilitate leaching.