Environmental risk assessment of mercury landfill disposal with considering large uncertainty of model variables used in mercury environmental fate model

• Takahashi Fumitake

  Tokyo Institute of Technology

• Rosamond Tshumah-Mutingwende

  Tokyo Institute of Technology

Bibliographic Information

Other Title

• 回収水銀の埋立処分における環境リスク評価（その３）：水銀摂取量や体重の変動も踏まえた水銀曝露リスクの評価

Abstract

According to high toxicity, mercury applications have been reduced and it will raise a large concern about environmentally safe disposal of unused mercury. Although environmental fate models of mercury are useful to assess environmental risk of mercury final disposal in a landfill site, many model variables used in models include large uncertainty depending on local environment. This study employed Bayesian information criterion to evaluate the most appropriate statistical distributions of model variables and estimated mercury exposure to human bodies. Model variables were discretized and mercury exposure were calculated in all possible sets of variable values. When mercury exposure was larger than tolerable intake which depends on body weight, environmental risk was judged as unaccepted. In 1000-year later case after final disposal, probability of unacceptable mercury exposure was estimated to be 12.5%. 

Journal

• Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management

  Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management 28 (0), 469-, 2017

  Japan Society of Material Cycles and Waste Management

Keywords

• Mercury
• Landfill disposal
• Environment fate model
• Mercury exposure
• Uncertainty

Details

• CRID: 1390001205590671744
• NII Article ID: 130006233937
• DOI: 10.14912/jsmcwm.28.0_469
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed