九州大学 エネルギー研究教育機構

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SHEN Siyu

SHEN Siyu
Name SHEN Siyu
Affiliation Graduate School of Economics
Department of Economic Systems
Title of the Research Environmental-economic trade-offs of membrane-based direct air capture technologies using life cycle assessment
Outline of Research Climate change is primarily driven by CO2 emissions. Achieving the Paris Agreement’s target of limiting global warming to 1.5°C requires not only reducing current emissions but also removing existing CO2 from the atmosphere. This study explores the potential of Direct Air Capture (DAC) combined with utilization (DAC-U) at a household scale. Using Life Cycle Assessment (LCA), we evaluate the environmental and economic feasibility of a small-scale DAC-U system that converts CO2 into household fuel and generates carbon credits. The analysis considers energy consumption, fuel production, carbon reduction, and carbon credit trading. If environmentally and economically viable, decentralized DAC-U units could provide a socially acceptable means for households to contribute to carbon neutrality.
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