Material/substance flow analysis of multiple substances for efficient recycling of steel scrap and alloying elements

• Project/Area Number: 15K00641
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Design and evaluation of sustainable and environmental conscious system
• Research Institution: Waseda University
• Principal Investigator: KONDO Yasushi 早稲田大学, 政治経済学術院, 教授 (80313584)
• Co-Investigator(Kenkyū-buntansha): 中村 愼一郎 早稲田大学, 政治経済学術院, 教授 (20180367)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 物質フロー解析 / 産業連関分析 / 鉄鋼スクラップ / 合金元素

Outline of Final Research Achievements

While steel scrap is characterized by a high rate of recycling, alloying elements in steel are not necessarily utilized effectively. In order to promote effective utilization of alloying elements, we developed a new mathematical model of material/substance flow analysis that considers the simultaneous presence of multiple materials and multiple substances. Results of its application under alternative scenarios show the substantial potential of effectively utilizing alloying elements and the importance of paying due attention to qualitative aspects of recycling, which was made possible by an indicator based on the amount of energy saved by effective utilization of alloying elements.

Research Products

• [Int'l Joint Research] University of Freiburg(Germany)
• [Int'l Joint Research] University of Freiburg(Germany)
• [Journal Article] Quantifying recycling and losses of Cr and Ni in steel throughout multiple life cycles using MaTrace-alloy (2017)
  • Author(s): Shinichiro Nakamura, Yasushi Kondo, Kenichi Nakajima, Hajime Ohno, Stefan Pauliuk
  • Journal Title: Environmental Science & Technology Volume: 51 Issue: 17 Pages: 9469-9476
  • DOI: 10.1021/acs.est.7b01683
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Regional distribution and losses of end-of-life steel throughout multiple product life cycles―Insights from the global multiregional MaTrace model (2017)
  • Author(s): Pauliuk S., Kondo Y., Nakamura S., Nakajima K.
  • Journal Title: Resources, Conservation and Recycling Volume: 116 Pages: 84-93
  • DOI: 10.1016/j.resconrec.2016.09.029
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] MaTrace-alloy: Input-output based integration of dynamic MFA and SFA with application to Cr and Ni in steel alloys (2017)
  • Author(s): Shinichiro Nakamura, Yasushi Kondo, Kenichi Nakajima, Hajime Ohno, Stefan Pauliuk
  • Organizer: The 9th Biennial Conference of the International Society for Industrial Ecology
  • Int'l Joint Research
• [Presentation] Tradeoff between material loss and closed-loop recycling in the global steel cycle: An application of MaTrace Global (2016)
  • Author(s): Yasushi Kondo, Stefan Pauliuk, Shinichiro Nakamura, Kenichi Nakajima
  • Organizer: Joint Socio-Economic Metabolism conference and Asia-Pacific conference of International Society for Industrial Ecology
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2016-09-28
  • Int'l Joint Research
• [Presentation] MaTrace Global: Tracing the fate of materials across regions over time in open-loop recycling (2016)
  • Author(s): Yasushi Kondo, Stefan Pauliuk, Shinichiro Nakamura, Kenichi Nakajima
  • Organizer: Circular Materials Conference 2016
  • Place of Presentation: Chalmers University of Technology, Gothenburg, Sweden
  • Year and Date: 2016-05-11
  • Int'l Joint Research
• [Presentation] Tracing the Fate of Industrial Materials Over Time and Across Space: A Contribution to Dynamic MFA Based on Input-Output Analysis (2015)
  • Author(s): Shinichiro Nakamura, Yasushi Kondo, Kazuyo Matsubae, Kenichi Nakajima, Tetsuya Nagasaka
  • Organizer: ISWA Beacon, 3rd International Conference on Final Sinks
  • Place of Presentation: Taipei, Taiwan
  • Year and Date: 2015-08-23
  • Int'l Joint Research / Invited
• [Presentation] Simultaneous Material and Substance Flow Analysis: An Extension of WIO-MFA and Its Application to Effective Recycling of Steel Alloys (2015)
  • Author(s): Yasushi Kondo, Kenichi Nakajima, Shinichiro Nakamura
  • Organizer: World Resources Forum Asia-Pacific
  • Place of Presentation: Sydney, Australia
  • Year and Date: 2015-06-01
  • Int'l Joint Research