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

Takaaki Furubayashi, Toshihiko Nakata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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%.

Original languageEnglish
Title of host publicationProceedings of the IASTED International Conference on Power and Energy Systems and Applications, PESA 2011
Pages231-238
Number of pages8
DOIs
Publication statusPublished - 2011 Dec 1
EventIASTED International Conference on Power and Energy Systems and Applications, PESA 2011 - Pittsburgh, PA, United States
Duration: 2011 Nov 72011 Nov 9

Publication series

NameProceedings 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
CountryUnited States
CityPittsburgh, PA
Period11/11/711/11/9

Keywords

  • Clean development mechanism
  • biogas utilization
  • energy system
  • inventory analysis
  • wastewater treatment

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

Fingerprint Dive into the research topics of 'Inventory analysis of biogas utilization system in the wastewater treatment for the CDM'. Together they form a unique fingerprint.

Cite this