Prioritizing early opportunities to enhance carbon efficiency at biorefineries
バイオ精製所における炭素効率向上のための初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
本論文は、バイオ精製所における廃炭素利用の統合の可能性を評価。セルロース系エタノール生産を例に、CO2からメタノール合成経路を技術経済分析とライフサイクルアセスメントで分析。結果、炭素使用効率が約30%から70%に向上するが、環境・経済性は構成に依存し、低炭素経路は再生可能電力と水素コストに制約される。
English
This paper evaluates the feasibility of integrating waste carbon utilization into commercial-scale biorefineries, using cellulosic ethanol as an example. Two CO2-to-methanol pathways are assessed via techno-economic analysis and life cycle assessment. Results show carbon efficiency improves from ~30% to ~70%, but environmental and economic outcomes are configuration-dependent; low-CI pathways are constrained by renewable electricity and hydrogen costs.
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政策が進む中、CCUS技術の導入検討に有用。特に、グリッド脱炭素化と低コスト水素の重要性を示す点が、日本の水素基本戦略やバイオマス活用と関連。
In the global GX context
This paper provides insights for global CCUS deployment in biorefineries, emphasizing the need for near-complete grid decarbonization and clean hydrogen. It offers a framework for evaluating configuration-dependent trade-offs between carbon efficiency and cost, relevant to ISSB and transition finance discussions.
👥 読者別の含意
🔬研究者:Provides a detailed LCA and TEA framework for CO2 utilization in biorefineries, highlighting key parameters for carbon efficiency and cost.
🏢実務担当者:Useful for assessing economic viability of CO2-to-methanol integration under varying grid and hydrogen cost scenarios.
🏛政策担当者:Emphasizes policy support for grid decarbonization and clean hydrogen to enable 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/v1first seen 2026-07-03 05:13:11
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