ALTERNATIVE MARINE FUELS FOR SUSTAINABLE AND COST-EFFICIENT SHIPPING
持続可能でコスト効率の高い海運のための代替船舶燃料 (AI 翻訳)
Mamdouh Elmallah, Ernesto Madariaga-Domínguez, M. Saadeldin, J. A. González-Almeida, Mohamed Shouman, Francisco José Correa-Ruiz
🤖 gxceed AI 要約
日本語
本研究は、IMOの2050年排出量半減目標に応じて、船舶用代替燃料（天然ガスとメタノール）の経済性を比較。ディーゼルエンジンをデュアルフューエルに転換した場合の排出削減コストを、NOx、SOx、CO2、COのトンあたりで算出。天然ガスはCO2削減コストが低く、メタノールはNOx・SOx削減に優位。両燃料とも従来燃料より大幅な排出削減効果を示した。
English
This study compares the economic viability of natural gas and methanol as alternative marine fuels for dual-fuel engine conversion in shipping. It calculates cost savings per ton of pollutant reduction (NOx, SOx, CO2, CO) relative to conventional diesel, finding natural gas cheaper for CO2 reduction and methanol more cost-effective for NOx and SOx. Both fuels support IMO's 2050 emission reduction target.
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
日本は海運国であり、IMO規制対応が急務。国内船主や造船所にとって、代替燃料転換の経済性データは実務上重要。本論文は天然ガスとメタノールのコスト比較を提供し、日本企業の燃料選択に示唆を与える。
In the global GX context
This paper provides a direct cost comparison of natural gas and methanol dual-fuel conversions, relevant for global shipping companies and policymakers under IMO's 2050 targets. It contributes to the growing literature on maritime decarbonization, a sector often harder to abate.
👥 読者別の含意
🔬研究者:Offers comparative cost data on alternative fuel conversions for maritime decarbonization.
🏢実務担当者:Shipping companies can use the cost-per-pollutant savings to evaluate fuel-switching investments.
🏛政策担当者:IMO policymakers can reference these cost metrics to refine subsidy or regulatory incentive designs.
📄 Abstract（原文）
With the global population projected to reach nearly 10 billion by 2050, the demand for animal products is expected to rise significantly. A less recognized source of emissions in this supply chain is livestock maritime transport, which moves millions of animals worldwide and emits large amounts of CO₂ and other pollutants. This study focuses on reducing the environmental impact of ships through cleaner fuels, efficient routing, and improved onboard power systems. Ship emissions pose a significant global challenge due to their detrimental impact on the environment, especially in terms of contributing to atmospheric global warming. To address this, the International Maritime Organization (IMO) has prioritized environmental protection, aiming to cut exhaust emissions by at least 50% by the year 2050. One of the key strategies proposed by the IMO is the adoption of alternative marine fuels, such as natural gas and methanol, in place of traditional fossil fuels. This paper presents a comparative analysis of converting conventional diesel engines into dual-fuel engines that run on either methanol or natural gas. The study focuses on the economic aspects of both the natural gas and methanol dual-fuel systems. According to the findings, the use of natural gas results in cost savings of $275.546/ton for NOx, $11,358.610/ton for SOx, $29.0853/ton for CO2, and $8,518.962/ton for CO. In comparison, methanol offers cost reductions of $362.687/ton for NOx, $14,638.436/ton for SOx, $12.736/ton for CO2, and $6,127.717/ton for CO. The study underscores the environmental and economic advantages of using natural gas and methanol as cleaner alternatives in the maritime sector. The results indicate that adopting these fuels could significantly lower emissions from ships and support broader global sustainability goals. Keywords: dual-fuel engine; IMO regulations; methanol; natural gas; ship emission reduction.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.31413/10.31413/nat.v14i1.20319first seen 2026-06-29 06:16:01
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