Techno-economic Assessment for Bio-accelerated Weathering for Carbon Sequestration
炭素隔離のための生物促進風化の技術経済評価 (AI 翻訳)
Luke Plante, Jacob Klug, Stephanie Murillo-Maikat, Peter Wei, Joseph Lee, Alia Almansoori, Gretchen Vengerova, Enoch Nagelli, Michael Charles, Brian Richards, Esteban Gazel, Buz Barstow, Hongyue Jin
🤖 gxceed AI 要約
日本語
本研究は、微生物を用いて鉱物の風化を促進しCO2を固定する「生物促進風化」の技術経済評価を実施。Gluconobacter oxydansを用いた超塩基性鉱山尾鉱の処理で、1トンCO2あたり最大3,465ドルのコストがかかるが、条件によっては3ドルの利益を得られる可能性を示した。微生物飼料コストが最大の費用要因であり、プロセス最適化や遺伝子工学による改善が経済性向上に重要。
English
This study conducts a techno-economic assessment of bio-accelerated weathering using Gluconobacter oxydans on ultramafic mine tailings for carbon sequestration. Under unfavorable conditions, costs reach $3,465 per tonne of CO2, but with favorable feedstock pricing, tax credits, and metal recovery, a profit of $3 per tonne is possible. Microbial feedstock cost is the main driver, highlighting optimization and genetic engineering as key for economic viability.
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
日本はCCUSやカーボンリサイクル技術の開発を推進しており、本手法は鉱山廃棄物を利用した新たな炭素除去オプションとして注目される。経済性評価の結果は、日本企業の技術投資判断に有用な知見を提供する。
In the global GX context
As global CDR efforts intensify, this paper provides the first cost assessment of bio-accelerated weathering, a novel carbon removal approach. It complements existing CCUS literature by highlighting a niche pathway that could be integrated with mining operations, relevant for ISSB-aligned disclosure on climate transition risks and opportunities.
👥 読者別の含意
🔬研究者:For researchers in carbon removal, this quantifies the economic feasibility of bio-accelerated weathering and identifies key cost drivers for further optimization.
🏢実務担当者:Mining or carbon credit companies can assess the potential profitability of integrating bio-accelerated weathering into tailings management, considering tax credits and metal recovery.
🏛政策担当者:Policymakers exploring CDR portfolios should note that bio-accelerated weathering could be cost-competitive under favorable conditions, warranting support for R&D.
📄 Abstract（原文）
Significant efforts are required to remove CO2 from the atmosphere to mitigate the worst effects of climate change. While several methods for CO2 capture and storage have been proposed, weathering of silicate-rich rocks—which releases divalent cations like magnesium and iron for subsequent carbonation—has the highest potential removal capacity. However, natural weathering and carbonation rates are far too slow to prevent significant atmospheric warming. Bio-accelerated weathering aims to use microorganisms to accelerate these processes, but while it has been explored in laboratories, its economic viability at large scale remains unknown. Here we calculate the costs and revenues of bio-accelerated weathering of ultramafic mine tailings by the mineral-dissolving microbe Gluconobacter oxydans. Without tax credits and with unfavorable feedstock market prices, the cost for capturing and storing one tonne of CO2 through bio-accelerated weathering could be as high as $3,465. However, under favorable feedstock pricing, tax credits, and revenue from co-leached metals, a profit of $3 per tonne of CO2 captured and stored could be obtained. This study identifies microbial feedstock costs as the major cost driver, suggesting that process optimization, alternative feedstock development, and genetic engineering are the efforts most likely to maximize economic viability. Our results suggest that bio-accelerated weathering warrants further exploration as a climate change mitigation strategy.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.31224/6912first seen 2026-05-05 19:42:29
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