Study of comprehensive management of waste and resource toward circular economy

• Project/Area Number: 17K00678
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental policy and social systems
• Research Institution: Iwate University
• Principal Investigator: Sasao Toshiaki 岩手大学, 人文社会科学部, 教授 (90322958)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 循環経済 / 廃棄物処理 / 資源循環 / 計量経済分析 / ベルギー / 資源管理 / 循環型社会

Outline of Final Research Achievements

The study examined comprehensive management of waste and resource toward circular economy, referring to advanced cases in the EU, particularly Belgium, and Japan. It showed that appropriate selection of sorted waste and collaboration between municipalities and private companies were necessary for efficient use of resource and energy produced from waste. It also clarified the determinants of prices, consumption and export of wastepaper by a time-series analysis of wastepaper markets. In addition, the study indicated that comprehensive treatment of a variety of recyclables could absorb possible fluctuation of resource revenue. On the other hand, the study also showed that introduction of weight-based pricing decreased the amount of residual waste significantly, compared with volume-based pricing, however, the remarkable decrease was observed only in the first year after the introduction.

Academic Significance and Societal Importance of the Research Achievements

廃棄物処理と資源管理の政策統合を進める上で、世界最高水準のリサイクル率を低コストで実現しながら、国内ではあまり紹介されることのないベルギーの事例に注目して、調査・分析を行った点は学術的・社会的意義が大きい。また動学的な分析により、従来手法がごみ処理有料化の効果を過大評価していた可能性を示したことは学術的に意義がある。リサイクルや熱回収を見据えた分別収集品目の選択や自治体と業者間の連携の必要性や、時系列分析により古紙の資源取引量や価格の決定要因を明らかにした点は、持続可能な廃棄物資源管理を進める上で社会的意義が大きい。

Research Products

• [Int'l Joint Research] ルーヴェン・カトリック大学/アントワープ大学(ベルギー)
• [Int'l Joint Research] ルーヴェン・カトリック大学(ベルギー)
• [Journal Article] The effect of waste incineration taxation on industrial plastic waste generation: A panel analysis (2020)
  • Author(s): Loic De Weerdt, Toshiaki Sasao, Tine Compernolle, Steven Van Passel, Simon De Jaeger
  • Journal Title: Resources, Conservation and Recycling Volume: 157 Pages: 104717-104717
  • DOI: 10.1016/j.resconrec.2020.104717
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] べルギーにおける家庭系容器包装廃棄物のリサイクルの現状と日本への示唆 (2019)
  • Author(s): 笹尾俊明
  • Journal Title: 廃棄物資源循環学会論文誌 Volume: 30 Pages: 38-47
  • Peer Reviewed
• [Presentation] 古紙市場に関する時系列分析 (2019)
  • Author(s): 笹尾俊明
  • Organizer: 第30回廃棄物資源循環学会研究発表会
• [Presentation] Does Weight-based Pricing on Municipal Waste Contribute to Waste Reduction? Dynamic Panel Analysis in Flanders (2019)
  • Author(s): Toshiaki Sasao and Simon De Jaeger
  • Organizer: 環境経済・政策学会2019年大会
• [Presentation] 容器包装リサイクル再考ーベルギーFost Plusの事例からの示唆ー (2018)
  • Author(s): 笹尾俊明
  • Organizer: 環境経済・政策学会2018年大会
• [Presentation] How does municipal solid waste policy affect heat and electricity produced by incinerators? (2017)
  • Author(s): Toshiaki Sasao
  • Organizer: Sardinia 2017 Symposium (16th International Waste Management and Landfill Symposium)
  • Int'l Joint Research
• [Presentation] 廃棄物焼却施設の熱利用及び発電の効率性とその決定要因 (2017)
  • Author(s): 笹尾俊明
  • Organizer: 第28回廃棄物資源循環学会研究発表会
• [Remarks] 岩手大学人文社会科学部 環境経済論・笹尾俊明研究室
  • URL: https://jinsha.iwate-u.ac.jp/~kankyou/sasao/