A study on heavy metal extractability and subsequent recovery by electrolysis for a municipal incinerator fly ash

摘要

The extractability of heavy metals (Pb, Cd, Cr and Cu) from a municipal incinerator ly ash (Designated MIF S) using an acidic or basic extractant and their subsequent recovery by electrowinning using an electrolytic cell of the lfuidized-bed type was investigated. The extrac- tants studied were HCl, HNO_3, H_2SO_4, HOAc, NaOAc (pH = 8.150, and NaOAc (pH = 3) having 0.1 N in concentration.