メソライト鉱物化による炭素回収：実験研究と地球化学的評価
Carbon Capture Through Mesolite Mineralization: Experimental Study and Geochemical Assessment (原題)
Faris M. Alotaibi
🤖 gxceed AI 要約
日本語
本研究は、天然ゼオライトであるメソライトを用いたCO2鉱物化の可能性を実験的に評価した。60℃のバッチ反応で、メソライトがカルサイト析出を促進し、100日間で最大0.17wt%の炭素取り込みを示した。PHREEQCシミュレーションも炭酸塩形成の好条件を確認し、メソライト含有地層が長期CO2貯留に有望であることを示唆する。
English
This study experimentally evaluates mesolite, a natural zeolite, for CO2 mineralization. Batch experiments at 60°C show mesolite promotes calcite precipitation, achieving up to 0.17 wt% carbon uptake over 100 days. PHREEQC simulations confirm favorable conditions for carbonate formation, suggesting mesolite-rich formations are promising for long-term CO2 sequestration.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本ではCCSの実証実験が進むが、鉱物炭酸塩化は地質学的条件に依存する。本研究成果は、日本の玄武岩質地層やゼオライト含有層でのCCS可能性を検討する際の基礎データとなり得る。
In the global GX context
Globally, mineral carbonation is gaining attention as a permanent CO2 storage method. This study provides experimental evidence for mesolite's effectiveness, contributing to the understanding of geological sequestration potential in basalt formations, relevant to global CCS initiatives.
👥 読者別の含意
🔬研究者:Provides experimental data on mesolite carbonation kinetics and mechanisms, useful for CCS research.
🏢実務担当者:Offers insights for evaluating mineral carbonation as a CCS option, though field-scale validation is needed.
🏛政策担当者:Highlights the potential of mineral carbonation for long-term CO2 storage, informing CCS policy support.
📄 Abstract（原文）
As CO₂ levels continue to rise, carbon capture and storage (CCS) is growing more important to mitigate the climate change. Among various approaches, mineral carbonation has emerged as a promising method and permanent storage. In this context, mesolite, a natural zeolite with an intermediate sodium-calcium composition, positioned chemically between sodium-rich natrolite and calcium-rich scolecite, was evaluated to assess its viability for CO₂ mineralization. The mesolite sample, sourced from Melshorn Mountain within the Tertiary basalt formations of Eastern Iceland, was cleaned properly and sieved to obtain the desired particle size, ensuring minimal impurities for accurate testing. Batch reactor experiment at various time was conducted at 60 °C using sodium carbonate and bicarbonate solutions to simulate subsurface CO₂ storage conditions. Mineral characterization and fluid analysis were performed using XRD, XRF, TGA, ICP-OES, and SEM-EDS. The experimental results demonstrate that mesolite can effectively promote carbonate mineralization in batch systems. At 60 °C, mesolite dissolved in two stages: a rapid release of silica, followed by a slower, sustained release of calcium. This calcium supply supported ongoing calcite precipitation, as confirmed by direct mineral formation on reacted mesolite surfaces. Thermal and elemental analyses indicated a carbon uptake of up to 0.17 wt.% over 100 days, with PHREEQC simulations confirming favorable saturation indices for carbonate formation under the tested conditions. In conclusion, these findings highlight mesolite's potential for long-term carbon sequestration in similar geological settings. This research highlights the significance of mesolite-rich geological formations as promising locations for secure and permanent CO₂ sequestration, thereby necessitating further investigation through field-scale studies.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.25781/kaust-4n5c6first seen 2026-09-09 05:00:16
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