Environmental Impact of Machinery and Equipment: A Comparison between EXIOBASE, National Environmentally Extended Input-Output Models, and Ecoinvent.

ABSTRACT: Environmental impact assessments of machinery and equipment (ME) are constrained by process-based life cycle assessment (LCA) with limited system coverage and by aggregated top-down models with reduced representativeness. Lack of knowledge about consistency across these approaches hampers the understanding of ME impacts and policy making. This study quantifies greenhouse gas emission multipliers (cradle-to-gate emissions per unit production) of ME using data from process LCA (ecoinvent), national environmentally extended input-output (EEIO) models, and a multiregional EEIO model (EXIOBASE) for the United States, China, Japan, and South Korea, assessing variations, reliability, and compatibility. While EXIOBASE (seven ME sectors) and national EEIO data (32-102 sectors) broadly align, nation

SUBMITTER: Liu Y 

PROVIDER: S-EPMC12750531 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature