Keisuke Nansai is Head of the International Material Cycles Section, Centre for Material Cycles and Waste Management Research, National Institute for Environmental Studies, Japan. His expertise includes environmental input-output analysis.

Keisuke Nansai is Head of the International Material Cycles Section at the Centre for Material Cycles and Waste Management Research of National Institute for Environmental Studies. He is an adjunct professor at the Graduate School of Environmental Studies at Nagoya University in Japan. He is a co-chair of the Environmentally-Extended Input-Output Section in International Society for Industrial Ecology, as well as a council member of the Institute of Life Cycle Assessment, Japan.

He is serving as an associate editor of an academic journal, Resources, Conservation & Recycling. He is also an editorial board member both of Economic Systems Research and Journal of Economic Structures. He has been specializing in environmental systems analyses based on life-cycle thinking, and applying an input-output analysis, life-cycle analysis, material flow analysis and network analysis to environmental and social assessments of technologies, human lifestyle, and policies. He is a developer of 3EID, the Japanese environmental input-output database that has been widely used for carbon footprint analysis in Japan.

His present research interests include the nexus of planetary health and resource productivity, resource criticality of technologies for climate change mitigation/adaptation, and future global material flow harmonized with the planetary health.

Selected publications

Mengyu Li, Manfred Lenzen, Dai Wang , Keisuke Nansai (2020) GIS-based modelling of electric-vehicle–grid integration in a 100% renewable electricity grid, Applied Energy, 262, 114577.

Takako Wakiyama, Manfred Lenzen, Ryosuke Bamba, Keisuke Nansai (2020), Flexible multiregional input–output database for city-level sustainability analysis in Japan, Resources, Conservation & Recycling, 154, 104588.

Takuma Watari, Keisuke Nansai, Kenichi Nakajima (2020), Review of critical metal dynamics to 2050 for 48 elements, Resources, Conservation & Recycling, 154, 104669.

Keisuke Nansai, Susumu Tohno, Satoru Chatani, Keiichiro Kanemoto, Midori Kurogi, Yuta Fujii, Shigemi Kagawa, Yasushi Kondo, Fumiya Nagashima, Wataru Takayanagi, Manfred Lenzen (2020), Affluent countries inflict unequal mortality and economic loss on Asia via PM2.5 emissions, Environment International, 134, 105238.

Keisuke Nansai, Jacob Fry, Arunima Malik, Naoki Kondo (2020), Carbon footprint of Japanese health care services from 2011 to 2015, Resources, Conservation & Recycling, 152, 104525.

Yosuke Shigetomi, Hajime Ohno, Andrew Chapman, Hidemichi Fujii, Keisuke Nansai, Yasuhiro Fukushima (2019), Clarifying Demographic Impacts on Embodied and Materially Retained Carbon towards Climate Change Mitigation, Environmental Science & Technology, 53(24), 14123-14133.

Takuma Watari, Kenichi Nakajima, Benjamin C. McLellan, Keisuke Nansai, Elsa Dominish, Damien Giurco, Integrating Material Efficiency Strategies with Low-Carbon Scenarios: Lithium Use in Electric Vehicles (2019), Environmental Science & Technology, 53(20), 11657-11665.

Keisuke Nansai, Yasushi Kondo, Damien Giurco, David Sussman, Kenichi Nakajima, Shigemi Kagawa, Wataru Takayanagi, Yosuke Shigetomi, Susumu Tohno (2019), Nexus between economy-wide metal inputs and the deterioration of sustainable development goals, Resources, Conservation & Recycling, 149, 12-19.

Takuma Watari, Benjamin C. McLellan, Damien Giurco, Elsa Dominish, Eiji Yamasue, Keisuke Nansai (2019), Total material requirement for the global energy transition to 2050: A focus on transport and electricity, Resources, Conservation & Recycling, 148, 91-103.

Kenichi Nakajima, Shoichiro Noda, Keisuke Nansai, Kazuyo Matsubae, Wataru Takayanagi, Makoto Tomita (2019), Global Distribution of Used and Unused Extracted Materials Induced by Consumption of Iron, Copper, and Nickel, Environmental Science & Technology, 53(3), 1555-1563.

Kenichi Nakajima, Ichiro Daigo, Keisuke Nansai, Kazuyo Matsubae, Wataru Takayanagi, MakotoTomita, Yasunari Matsuno (2018), Global distribution of material consumption: Nickel, copper, and iron, Resources, Conservation & Recycling, 133, 369-374.

Keisuke Nansai, Kenichi Nakajima, Sangwon Suh, Shigemi Kagawa,Yasushi Kondo, Wataru Takayanagi and Yosuke Shigetomi (2017) The role of primary processing in the supply risks of critical metals, Economic Systems Research, 29(3), 335-356.

Yosuke Shigetomi, Keisuke Nansai, Shigemi Kagawa, Susumu Tohno (2015) Trends in Japanese households' critical-metals material footprints, Ecological Economics, 119, 118-126.

Keisuke Nansai, Kenichi Nakajima, Shigemi Kagawa, Yasushi Kondo, Yosuke Shigetomi and Sangwon Suh (2015) Global mining risk footprint of critical metals necessary for low-carbon technologies: the case of neodymium, cobalt, and platinum in Japan, Environmental Science & Technology, 49(4), 2022-2031.

Keisuke Nansai, Kenichi Nakajima, Shigemi Kagawa, Yasushi Kondo, Sangwon Suh, Yosuke Shigetomi, and Yuko Oshita (2014) Global flows of critical metals necessary for low-carbon technologies: the case of neodymium, cobalt and platinum, Environmental Science & Technology, 48(3), 1391-1400.