Inventory analysis of biogas utilization system in the wastewater treatment for the CDM

Takaaki Furubayashi, Toshihiko Nakata

研究成果: Conference contribution

抄録

The purpose of this study is to evaluate GHG emission reduction and economic potential of wastewater treatment system by installing an anaerobic digester in Southeast Asia. Then the optimal investment to get GHG emission credit is obtained. In the advanced scenarios, the anaerobic digester is installed in the wastewater treatment system, and methane (biogas) is recovered and combusted. The biogas can be utilized for electricity generation and heat production, and can substitute fossil fuels. The objective of the study is to define the relationship between CER (certified emission reduction) credit and investment costs, and the optimal system by the calculation Internal Rate of Return (IRR). The result shows that the methane recovery and destruction reduces 63 % of GHG emissions from BAU scenario. The biogas utilization for energy has small effect on the GHG reduction. However, the income by energy production has large effect on the IRR. Thus, the IRR in the case that all biogas is utilized for electricity generation is 24%, and the IRR in the case that all biogas is utilized for heat production is 8%. The results of sensitivity analysis also show that the dominant parameter to increase IRR is capital cost. If the capital cost for heat production is half, the IRR is more than 40%.

本文言語English
ホスト出版物のタイトルProceedings of the IASTED International Conference on Power and Energy Systems and Applications, PESA 2011
ページ231-238
ページ数8
DOI
出版ステータスPublished - 2011
イベントIASTED International Conference on Power and Energy Systems and Applications, PESA 2011 - Pittsburgh, PA, United States
継続期間: 2011 11 72011 11 9

出版物シリーズ

名前Proceedings of the IASTED International Conference on Power and Energy Systems and Applications, PESA 2011

Other

OtherIASTED International Conference on Power and Energy Systems and Applications, PESA 2011
国/地域United States
CityPittsburgh, PA
Period11/11/711/11/9

ASJC Scopus subject areas

  • エネルギー工学および電力技術
  • 燃料技術

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