Leaching Characteristics of Non Ferrous Metals Recovery from Korean Municipal Solid Waste Incineration Bottom Ash Samples

摘要

Incineration is an advanced solid waste management for municipal solid waste. Municipal solid waste incineration (MSWI) is an efficient combustion process of the waste disposal/treatment. Municipal solid waste incineration (MSWI) fly ash and bottom ashes are the byproducts of incineration combustion process. In particular, incineration of waste samples (bottom ash) containing valuable nonferrous metals such as copper (Cu), zinc (Zn), lead (pb), nickel (Ni), titanium (Ti), including some heavy metals arsenic (As), chromium (Cr), cadmium (Cd) and mercury (Hg) etc., critical rare metals and rare earth elements. We collected the copper rich four different municipal solid waste incineration bottom ash samples from four different incineration plants from Seoul, Korea. The investigations were carried out at bench scale. For copper extraction, sulfuric acid was used more suitable for high efficiency. In this work, we used LIX extractant for selective extraction of copper from bottom ash samples. Finally, an efficient recovery of the copper was extracted 90% was achieved.