Trends in Japanese households' critical-metals material footprints

Yosuke Shigetomi, Keisuke Nansai, Shigemi Kagawa, Susumu Tohno

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

This study adopts the concept of material footprint (MF), an indicator for consumption-based material extraction via international trade, and identifies the relationship between the MFs of critical metals for low-carbon technologies - neodymium, cobalt, and platinum - and Japanese household consumption through a multiregional input-output approach using the global link input-output model. We focus solely on the impact of changes in consumption patterns caused by demographic change on the structures of the MFs from 2005 to 2035. As a result, the total MFs of neodymium, cobalt, and platinum in 2035 are estimated to be 11%, 6.6% and 4.7% lower than in 2005, respectively. In terms of commodity sectors, the MFs of the three metals induced by "passenger motor cars" are estimated to decrease most between 2005 and 2035. Finally, we carried out an assessment of the extent to which the products dealt with under current Japanese recycling laws cover the MFs calculated for 2035. This indicates that continued enforcement of the recycling laws can play an important role in alerting consumers to the MFs of critical metals, particularly neodymium. For improving the accuracy of the above estimates, further studies need to incorporate other future trends like technologies and trade.

Original languageEnglish
Pages (from-to)118-126
Number of pages9
JournalEcological Economics
Volume119
DOIs
Publication statusPublished - Nov 1 2015

Fingerprint

neodymium
footprint
platinum
cobalt
metal
recycling
international trade
commodity
automobile
carbon
material
trend
household
Household
Metals
consumption

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Economics and Econometrics

Cite this

Trends in Japanese households' critical-metals material footprints. / Shigetomi, Yosuke; Nansai, Keisuke; Kagawa, Shigemi; Tohno, Susumu.

In: Ecological Economics, Vol. 119, 01.11.2015, p. 118-126.

Research output: Contribution to journalArticle

Shigetomi, Yosuke ; Nansai, Keisuke ; Kagawa, Shigemi ; Tohno, Susumu. / Trends in Japanese households' critical-metals material footprints. In: Ecological Economics. 2015 ; Vol. 119. pp. 118-126.
@article{e98a4cfcb3f94aa3b678129822ede135,
title = "Trends in Japanese households' critical-metals material footprints",
abstract = "This study adopts the concept of material footprint (MF), an indicator for consumption-based material extraction via international trade, and identifies the relationship between the MFs of critical metals for low-carbon technologies - neodymium, cobalt, and platinum - and Japanese household consumption through a multiregional input-output approach using the global link input-output model. We focus solely on the impact of changes in consumption patterns caused by demographic change on the structures of the MFs from 2005 to 2035. As a result, the total MFs of neodymium, cobalt, and platinum in 2035 are estimated to be 11{\%}, 6.6{\%} and 4.7{\%} lower than in 2005, respectively. In terms of commodity sectors, the MFs of the three metals induced by {"}passenger motor cars{"} are estimated to decrease most between 2005 and 2035. Finally, we carried out an assessment of the extent to which the products dealt with under current Japanese recycling laws cover the MFs calculated for 2035. This indicates that continued enforcement of the recycling laws can play an important role in alerting consumers to the MFs of critical metals, particularly neodymium. For improving the accuracy of the above estimates, further studies need to incorporate other future trends like technologies and trade.",
author = "Yosuke Shigetomi and Keisuke Nansai and Shigemi Kagawa and Susumu Tohno",
year = "2015",
month = "11",
day = "1",
doi = "10.1016/j.ecolecon.2015.08.010",
language = "English",
volume = "119",
pages = "118--126",
journal = "Ecological Economics",
issn = "0921-8009",
publisher = "Elsevier",

}

TY - JOUR

T1 - Trends in Japanese households' critical-metals material footprints

AU - Shigetomi, Yosuke

AU - Nansai, Keisuke

AU - Kagawa, Shigemi

AU - Tohno, Susumu

PY - 2015/11/1

Y1 - 2015/11/1

N2 - This study adopts the concept of material footprint (MF), an indicator for consumption-based material extraction via international trade, and identifies the relationship between the MFs of critical metals for low-carbon technologies - neodymium, cobalt, and platinum - and Japanese household consumption through a multiregional input-output approach using the global link input-output model. We focus solely on the impact of changes in consumption patterns caused by demographic change on the structures of the MFs from 2005 to 2035. As a result, the total MFs of neodymium, cobalt, and platinum in 2035 are estimated to be 11%, 6.6% and 4.7% lower than in 2005, respectively. In terms of commodity sectors, the MFs of the three metals induced by "passenger motor cars" are estimated to decrease most between 2005 and 2035. Finally, we carried out an assessment of the extent to which the products dealt with under current Japanese recycling laws cover the MFs calculated for 2035. This indicates that continued enforcement of the recycling laws can play an important role in alerting consumers to the MFs of critical metals, particularly neodymium. For improving the accuracy of the above estimates, further studies need to incorporate other future trends like technologies and trade.

AB - This study adopts the concept of material footprint (MF), an indicator for consumption-based material extraction via international trade, and identifies the relationship between the MFs of critical metals for low-carbon technologies - neodymium, cobalt, and platinum - and Japanese household consumption through a multiregional input-output approach using the global link input-output model. We focus solely on the impact of changes in consumption patterns caused by demographic change on the structures of the MFs from 2005 to 2035. As a result, the total MFs of neodymium, cobalt, and platinum in 2035 are estimated to be 11%, 6.6% and 4.7% lower than in 2005, respectively. In terms of commodity sectors, the MFs of the three metals induced by "passenger motor cars" are estimated to decrease most between 2005 and 2035. Finally, we carried out an assessment of the extent to which the products dealt with under current Japanese recycling laws cover the MFs calculated for 2035. This indicates that continued enforcement of the recycling laws can play an important role in alerting consumers to the MFs of critical metals, particularly neodymium. For improving the accuracy of the above estimates, further studies need to incorporate other future trends like technologies and trade.

UR - http://www.scopus.com/inward/record.url?scp=84940865109&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84940865109&partnerID=8YFLogxK

U2 - 10.1016/j.ecolecon.2015.08.010

DO - 10.1016/j.ecolecon.2015.08.010

M3 - Article

AN - SCOPUS:84940865109

VL - 119

SP - 118

EP - 126

JO - Ecological Economics

JF - Ecological Economics

SN - 0921-8009

ER -