Abstract
Due to the geographical condition of Japan, the available area for the landfill site is very limited, and it is difficult to find new space for final disposal.
Under this background, “Landfill mining activity” is being promoted by material industries. “Landfill mining activity” implies the digging up of the landfilled wastes, the recovery of valuable material and energy resources and, thus, the reuse of the space as a new landfill site. The landfill mining activity is actually examined in some prefectures of Japan. However, the valuable materials recovery has not been taken into account in the previous reports on the environmental assessments by using Input Output (IO) model. The purpose of this study is the development of methods to evaluate environmental burden and economic impact achieved by the landfill mining activity.
To describe the landfill mining activity, dynamic extension model of Waste Input Output analysis and the additional sectors of Waste Input Output (WIO) Table are required. By using scenario analysis, the energy requirement for the landfill mining activity, landfill consumption and CO2 emission are evaluated.
