Material flow analysis of used personal computers in Japan.

摘要: Abstract Most personal computers (PCs) are discarded by consumers after the data files have been moved to a new PC. Therefore, used PC collection scheme should be created that does not depend on distribution route of PCs. In Japan, manufacturers’ voluntary take-back recycling schemes were established in 2001 (for business PCs) and 2003 household PCs). At same time, export PCs from Japan increased, affecting domestic reuse market. These regulatory economic conditions would changed flow this paper, we developed method minimizing errors estimating material The method’s features include utilization both input output elimination subjective estimation as much possible. Flow rate existing surveys for fiscal years (FY) 2000, 2001, 2004. results show 3.92 million 4.88 FY 2000 respectively. Approximately two-thirds disposed or recycled within country, one-fourth was reused 8% exported. 2004, 7.47 discarded. ratio disposal decreased 37% whereas ratios increased 26%, Flows businesses retailers 2004 dramatically, which led reuse. An increase lease rental companies secondhand shops has exports. Results interviews with members trade statistics verify our