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| | Abstract | | In Japan, securing a stable supply of rare metal resources in the own country is an important issue in preparation for future tightening of the resources. On the other hand, waste electric appliances contain metals with high scarcity value. However, prior to the establishment of the Basic Act on Establishing a Sound Material-Cycle Society in 2000, these wastes were dumped in landfills without preprocessing. Also, rare metal was hardly contained in the leachate. From these facts, rare metals are expected to remain in the landfills. Therefore, the study is focused on grasping the metal-enriched zone in the valley landfills which are common in Japan. In the field experiment, the resistivity measurement and the IP measurement were carried out the landfills, and the profiles were obtained. In the laboratory experiments, the resistivity and percent frequency (PFE) of each sample were measured. Also, contained metal concentrations were analysed. As a result, the IP measurement is considered to be an effective method for grasping the metal-enriched zone in the valley landfills. |
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