CO2を燃料に変換する新技術が登場しているが、水資源にはどのような影響があるのだろうか？(New technologies are emerging that can convert CO2 into fuel, but what impact will they have on water resources?)

2024-10-16

2024-10-15 アルゴンヌ国立研究所(ANL)

Researchers at Argonne created a tool that can help reduce the impact to local freshwater resources of emerging technologies that can convert CO2 into sustainable aviation fuel. (Image by Shutterstock.)

アルゴンヌ国立研究所は、CO2を燃料に変換する技術が地域の水資源に与える影響を評価する新ツール「CO2Rue WATERモジュール」を開発しました。このツールは、持続可能な低炭素社会を目指し、水使用を最小限に抑えながら、CO2からの燃料変換技術の環境および経済的パフォーマンスを向上させることを目的としています。特に再生水の利用が水資源の負担を軽減し、CO2削減技術の水の持続可能性を高めることが示されています。

＜関連情報＞

CO2削減・利用技術が地域の水資源に与える影響を評価
Assessing the Impacts of CO₂ Reduction and Utilization Technologies on Regional Freshwater Resources

Wu, May; Kim, Hannah
OSTI.GOV 01 June 2024
DOI:https://doi.org/10.2172/2396748

This work, a product of the Bioenergy Technologies Office (BETO)-supported multi-lab CO₂ Reduction and Upgrading for e-Fuels Consortium (CO₂RUe), focuses on advanced research and development and cross-cutting evaluation of environmental, economic, and social sustainability for CO₂ reduction and upgrading for fuels and chemicals. The Consortium develops and de-risks advanced technologies that use renewable electricity to convert CO₂ into e-fuels and commodity chemicals. One key aspect of environmental sustainability consideration is water resources. This report summarizes a three-year study that analyzed the impacts of water consumption in select CO₂ reduction and utilization technologies in two future scenarios using a pair of water indices—water availability index and water stress footprint. The analyses also account for projected electricity grid mixes and their water withdrawal and water consumption demand in grid regions. The work identifies drivers, challenges, and critical areas in water sustainability, along with valuable insights into technological and regional factors. The study also explores the potential of using non-traditional water resources to reduce water stress and increase availability. These findings are intended to support industry stakeholders and BETO with the knowledge needed for informed decision-making, contributing to strategies to mitigate risks associated with the implementation of CO₂ utilization technologies.