Upgrading numerical model for expressing long-term behavior of wastein landfill

• Project/Area Number: 19560816
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Recycling engineering
• Research Institution: Hokkaido University
• Principal Investigator: TOJO Yasumasa Hokkaido University, 大学院・工学研究科, 准教授 (70250470)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2007: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 適正処分の技術とシステム / 廃棄物処分場 / 安定化 / シミュレーション / PAH / 腐植物質 / リグニン / 微生物分解

Research Abstract

廃棄物埋立地での物質挙動を表現する数値計算モデルに有害化学物質の挙動を組み込むために, 有機物分解に伴って生成する腐植物質の挙動を実験的に追跡した. 易分解性物では分解初期に腐植物質の僅かな生成が確認されたものの, 継続的な腐植の生成は認められなかった. また白色腐朽菌による木質分解においてはリグニン減少は起こったものの腐植の生成を確認するには至らなかった. 埋立物中のPAH含有量を実測し, 長期動態モデルに組み込んだ結果, 分配係数の大きな物質は固相に長期残存することが明らかになった.

Research Products

• [Journal Article] Compartment model of aerobic and anaerobic biodegradation in a municipal solid waste landfill (2007)
  • Author(s): Sang-Yul Kim, Yasumasa Tojo, Toshihiko Matsuto
  • Journal Title: Waste Management & Research Vol.25 Pages: 524-537
  • Peer Reviewed
• [Presentation] Basic study on wood waste degradation by white rot fungi and synthesis of humic substance (2008)
  • Author(s): Junpei Kawata, Yasumasa Tojo, Toshihiko Matsuto
  • Organizer: The 12th Korea-Japan Joint International Session, Proceedings of the 2008 Spring Conference of the Korea Society of Waste Management Sunchon, Korea
  • Place of Presentation: Sunchon National Univreshity
  • Year and Date: 2008-05-08
• [Presentation] Basic study on wood waste degradation by white rot fungi and synthesis of humic substance (2008)
  • Author(s): Junpei Kawata, Yasumasa Tojo, Toshihiko Matsuto
  • Organizer: The 2008 Spring Conference of the Korea Society of Waste Management
  • Place of Presentation: Sunchon National University,順天韓国
  • Year and Date: 2008-05-08
• [Presentation] Assessment of biodegradability of waste in old landfill (2007)
  • Author(s): Yasumasa TOJO
  • Organizer: SARDINIA 2007 11th International Waste Management and Landfill Symposium
  • Place of Presentation: S. Margherita di Pula, Cagliari, Italy.
  • Year and Date: 2007-10-03
• [Presentation] Study on production of humic substances in the process of biodegradation of organic matters (2007)
  • Author(s): Ai Shinbori, Yasumasa Tojo, Toshihiko Matsuto
  • Organizer: The 2007 Environmental Societies Joint Conference, The 11th Korea-Japan Joint International Session
  • Place of Presentation: BEXCO, Pusan, Korea
  • Year and Date: 2007-05-03