Study on a Convenient Method for Monitoring Hazardous Gas Based on Methane Determination during Waste Excavation at Reclamation Sites

• Tanikawa Noboru

  Laboratory of Sound Material-Cycle Systems Planning, Graduate School of Engineering, Hokkaido University

• Furuichi Toru

  Laboratory of Sound Material-Cycle Systems Planning, Graduate School of Engineering, Hokkaido University

• Ishii Kazuei

  Laboratory of Sound Material-Cycle Systems Planning, Graduate School of Engineering, Hokkaido University

• Iwasaki Kenji

  Laboratory of Sound Material-Cycle Systems Planning, Graduate School of Engineering, Hokkaido University

Bibliographic Information

Other Title

• メタンを指標とした不法投棄物・埋立廃棄物の掘削現場における有害ガス簡便モニタリング手法の検討
• メタン オ シヒョウ ト シタ フホウ トウキブツ ウメタテ ハイキブツ ノ クッサク ゲンバ ニ オケル ユウガイ ガス カンベン モニタリング シュホウ ノ ケントウ

Abstract

We propose a convenient method for monitoring hazardous gas based on the determination of ppm-level concentrations of CH₄ in ambient air. The proposed method can be applied during the excavation of landfill or dumped waste at reclamation sites, and we investigated its usability in an actual field. A portable open-path type analyzer and a retroreflector were used to determine the CH₄ concentration.<BR>The hazardous gas in landfill gas emitted from final disposal and illegal-dumping sites always contains CH₄ and H₂S occurring together, with the latter considered to be the main hazardous component. The maximum concentration ratio (H₂S/CH₄) at final disposal and illegal-dumping sites was expected to be about 10⁻¹. This study showed clearly that the ambient CH₄ concentration could be useful as an indicator for the monitoring of hazardous gas for the evaluation of potential danger.<BR>It was also shown that the proposed method could be useful for monitoring as a safety control at a reclamation site. This method works by comparing the measured ppm concentration levels of CH₄ with a management value that is decided by considering the maximum concentration ratio (of the hazardous gas that was most harmful at the site, such as H₂S/CH₄), its acceptable concentration and a safety ratio.

Journal

• Journal of the Japan Society of Material Cycles and Waste Management

  Journal of the Japan Society of Material Cycles and Waste Management 21 (1), 1-9, 2010

  Japan Society of Material Cycles and Waste Management

Keywords

• methane
• open path analyzer
• landfill site
• hazardous gas
• hydrogen sulfide

Details

• CRID: 1390282680291631616
• NII Article ID: 120005133369
• NII Article ID: 130000421126
• NII Book ID: AA12384878
• DOI: 10.3985/jjsmcwm.21.1
• ISSN: 18835899
• ISSN: 18835856
• HANDLE: 2115/51449
• NDL BIB ID: 10707895
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10707895
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed