Site selection for underground bio-methanation of hydrogen and carbon dioxide using an integrated multi-criteria decision-making (MCDM) approach

Lin Wu, Zhengmeng Hou, Zhifeng Luo, Yanli Fang, Jinhua Mao, Nan Qin, Yilin Guo, Tian Zhang and Nan Cai

Energy, 2024, vol. 306, issue C

Abstract: The underground bio-methanation of hydrogen and carbon dioxide, fulfilling multiple functions such as carbon mitigation, large-scale energy storage, and renewable natural gas synthesis, presents tremendous development prospects. However, the issue of site selection for underground bio-methanation remains unexplored. To tackle this challenge, this study proposes a pioneering evaluation criteria system tailored for underground bio-methanation site selection, encompassing four main-criteria (i.e., technology, safety, society, and economy) along with 20 sub-criteria. Moreover, an integrated multi-criteria decision-making (MCDM) approach for optimal site selection is introduced. This approach integrates both quantitative and qualitative criteria, employs game theory to combine subjective and objective weights for a more comprehensive weighting, and applies the TODIM (Interactive and Multicriteria Decision Making) method for alternative ranking. Additionally, a case study is conducted in the Sichuan Basin, Southwest China, to demonstrate the viability of the proposed decision framework. The findings highlight that site A1 emerges as the most promising location for underground bio-methanation among the four alternative natural gas storage sites, with the stability of this outcome substantiated through both sensitive and comparative analyses. This study represents the first comprehensive exploration of site selection for underground bio-methanation, and the introduced MCDM approach holds potential for addressing other energy-related site selection issues.

Keywords: Carbon mitigation; Large-scale energy storage; Multi-criteria decision-making (MCDM); Renewable natural gas; Site selection; Underground bio-methanation (search for similar items in EconPapers)
Date: 2024
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:306:y:2024:i:c:s0360544224022114

DOI: 10.1016/j.energy.2024.132437

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