メキシコにおける精製蔗糖生産に伴う炭素・水・エネルギーフットプリントのライフサイクルアセスメントによる定量化
Quantification of Carbon, Water, and Energy Footprints Associated with Refined Cane Sugar Production in Mexico Through Life Cycle Assessment (原題)
Mario Rafael Giraldi-Díaz, Lorena De Medina-Salas, Eduardo Castillo-González, Raúl Velásquez-De la Cruz
🤖 gxceed AI 要約
日本語
メキシコ南東部の高生産地域の製糖工場を対象に、ISO 14040/14044準拠のcradle-to-gate LCAを実施し、炭素・水・エネルギーの3フットプリントを統合評価した。機能単位100gあたりCO2換算41.7g、淡水267.59L、エネルギー2.82MJ。収穫前焼却が炭素の43.5%、農業段階が水の98.25%を占め、バガス焚きボイラがエネルギー需要の73.3%を担う。バガスを化石燃料に置換すると工業部門の炭素排出が7〜28倍に増加すると試算された。
English
A cradle-to-gate LCA (ISO 14040/14044) quantified carbon, water, and energy footprints for refined cane sugar in a high-productivity region of southeastern Mexico. Per 100 g of sugar: 41.7 g CO2-eq, 267.59 L freshwater, and 2.82 MJ. Pre-harvest burning dominated carbon (43.5%), agriculture drove 98.25% of water use, and bagasse boilers supplied 73.3% of energy demand. Replacing bagasse with fossil fuels would raise industrial emissions 7- to 28-fold.
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
日本では甘蔗製糖は沖縄・鹿児島に限られるが、バイオマス残渣（バガス）によるコジェネや農業由来フットプリント算定手法は、国内の食品・農業セクターのScope 3算定やSSBJ対応の参考になる。
In the global GX context
Adds primary-data, multi-footprint LCA evidence from a Global South agricultural system, relevant to Scope 3 agriculture accounting and bioenergy cogeneration debates under CSRD/ISSB supply-chain disclosure.
👥 読者別の含意
🔬研究者:農業LCAにおける炭素・水・エネルギーの統合評価手法とホットスポット特定の実例を提供する。
🏢実務担当者:食品・農業サプライヤーがScope 3や水リスク算定に活用できる一次データと改善優先順位の考え方を示す。
🏛政策担当者:収穫前焼却規制や灌漑効率・コジェネ改善政策の環境効果を定量的に裏付ける根拠となる。
📄 Abstract（原文）
Integrated life cycle assessments combining carbon, water, and energy footprints are uncommon for cane sugar production in Mexico, particularly in high-productivity regions where aging infrastructure substantially affects environmental performance. This study quantified these three impact categories for refined cane sugar production in a high-intensity region of southeastern Mexico, applying a cradle-to-gate life cycle assessment (LCA) under ISO 14040 and 14044, using SimaPro software and primary field data. The functional unit (FU) was defined as 100 g of refined cane sugar. Results per FU were 41.7 g CO2-eq, 267.59 L of freshwater consumed, and 2.82 MJ. Pre-harvest burning dominated the carbon footprint (43.5%), followed by juice clarification (14.9%) and synthetic fertilization (9.2%). The agricultural phase accounted for 98.25% of the water footprint, almost entirely attributable to the freshwater withdrawn for surface irrigation. Bagasse-fueled boiler operations constituted the main energy demand (73.3%), with substantial thermal losses associated with process inefficiencies. A sensitivity analysis showed that replacing bagasse with fossil fuels would increase industrial carbon emissions by approximately 7- to 28-fold, confirming the environmental relevance of integrated bioenergy use. Pre-harvest burning, irrigation inefficiency, and cogeneration underperformance were identified as the principal environmental hotspots at the studied mill, providing a site-specific primary-data basis for improvement strategies that may serve as a reference for comparable systems.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/environments13100552first seen 2026-10-09 04:52:49
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