WASTE INPUT-OUTPUT ANALYSIS OF ADVANCED LOOP-CLOSING SYSTEM BY INNOVATIVE PRODUCTION TECHNOLOGY IN STEEL INDUSTRY

Abstract

In Hyogo Eco-town. environmental efforts to establish an advanced loop-closing system in the steel industry are promoted by utilizing the established infrastructure for manufacturing and introducing the recycling-oriented innovative production technology. In this paper, Waste Input-Output (WI-O) model were developed to evaluate the material flow and environmental loads due to the technological changes. The results of analysis by WI-O model showed that an advanced loop-closing system reduced the amount of natural resource input by 9.2% and improved the resource productivity by 6.15% compared with the conventional recycling system.