Prioritizing early opportunities to enhance carbon efficiency at biorefineries
バイオリファイナリーにおける炭素効率向上のための早期機会の優先順位付け (AI 翻訳)
Wenjun Guo, Yoel R. Cortés‐Peña, Sarang S. Bhagwat, Lavanya P. Kudli, Jeremy S. Guest
🤖 gxceed AI 要約
日本語
バイオリファイナリーの炭素効率を改善するため、CO2からメタノールへの転換プロセスを評価。セルロース系エタノール生産を例に、天然ガス改質とCO2水素化の2経路を技術経済・LCA分析。炭素利用効率が約30%から70%に向上するが、環境・経済性は構成に依存。低炭素経路は再生可能電力と水素コストが課題。
English
This study evaluates integrating CO2-to-methanol synthesis into commercial biorefineries to improve carbon efficiency. Using cellulosic ethanol as a case, two pathways (natural gas bi-reforming with CO2 and CO2 hydrogenation) are analyzed via techno-economic analysis and LCA under uncertainty. Carbon efficiency increases from ~30% to ~70%, but environmental and economic outcomes depend on configuration. Low-CI pathways face cost barriers from renewable electricity and hydrogen, requiring near-complete grid decarbonization and supportive policies.
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、バイオ燃料やグリーンケミカルの生産拡大が求められる中、CCUS技術の導入検討が進んでいる。本論文は、CO2利用による炭素効率向上の可能性と経済的課題を定量的に示しており、日本のバイオリファイナリー設計や補助金政策に示唆を与える。
In the global GX context
Globally, CCUS is recognized as a key decarbonization strategy, but its economic viability remains uncertain. This paper provides a rigorous, configuration-dependent assessment of CO2-to-methanol integration in biorefineries, highlighting the critical role of grid decarbonization and clean hydrogen costs. Findings support policy frameworks and investment decisions for low-carbon fuels and chemicals.
👥 読者別の含意
🔬研究者:Quantitative framework for assessing CCUS integration in biorefineries under uncertainty, useful for process design and LCA methodology.
🏢実務担当者:Insights on cost and carbon performance trade-offs for CO2 utilization projects, guiding investment in renewable electricity and hydrogen sourcing.
🏛政策担当者:Evidence that near-complete grid decarbonization and clean hydrogen cost reductions are prerequisites for cost-competitive CCUS in biorefineries.
📄 Abstract（原文）
Biorefineries are a critical component of society’s transition from fossil-derived to bio-derived fuel and chemical production, but their life cycle carbon efficiency is often undermined by the underutilization of biomass feedstocks during processing. In this work, we explore the feasibility and sustainability implications of integrating waste carbon utilization into commercial-scale biorefineries through process design, simulation, techno-economic analysis, and life cycle assessment under uncertainty. Using cellulosic ethanol production as an illustrative example, two methanol synthesis pathways (natural gas bi-reforming with CO 2 and CO 2 hydrogenation) are evaluated, with hydrogen either generated on-site or procured externally. Results show integrating CO 2 -to-methanol synthesis substantially increases carbon use efficiency from ~30% to ~70%. However, environmental and economic outcomes are configuration-dependent. Fossil-based natural gas and hydrogen use undermine system carbon intensity (CI) benefits, though the natural gas-based pathway lowers costs relative to base ethanol production. Low-CI pathways are economically constrained by renewable electricity and hydrogen costs, which methanol price premiums and carbon credits could partially offset. Under current grid-mix conditions, cost parity with base ethanol production requires 80% renewable electricity, whereas comparable CI necessitates 96% renewable penetration. Overall, these findings highlight that near-complete grid decarbonization, low-cost clean hydrogen, and supportive policy frameworks are critical for the deployment of CO 2 utilization in biorefineries.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.26434/chemrxiv.15005419/v2first seen 2026-07-06 04:52:48
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