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| | Abstract | | Recycling laws were enacted in 2000. But, various types of wastes were discarded into landfills without appropriate intermediate treatments before 2000. However few metals are detected in the leachate, meaning that valuable metals remain trapped in landfills. A purpose of this study is that we prospect metal-enriched zone and urban mining of landfill sites become economically viable as rare metals become scarcer. We have previously examined the enrichment processes in landfill. In addition, we developed and tested a nondestructive three-dimensional prospecting system. Therefore we applied induced polarization measurement to identify metal enriched zones in the landfill. Furthermore, we conducted some analyses. |
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