Abstract
Material demands around the world, especially in developing countries, have Recently seen a rapid rise. The recovery of scrap from end-of-life products plays an important role in the conservation of natural resources and the construction of a sound material cycle society. In order to investigate the potential in material scrap recovery for designated areas, an estimation of the amount of materials used in products, filled “Material Stock Accounting”, has recently gained attention. Material stock accounting two approaches, the top-down approach and the bottom-up approach : the top-down approach uses time-series data for consumption and trade of materials as well as distributions for product lifetimes,while the bottom-up approach uses the number of product units in the designated area and its material use intensities. This paper explains the methodologies for material stock accounting and introduces some case studies.
