可持续交通部门的2G生物乙醇:生命周期评估的回顾和分析

IF 6.4 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Current Pollution Reports Pub Date : 2025-01-22 DOI:10.1007/s40726-025-00340-2
Umesh, Vijayanand Suryakant Moholkar
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引用次数: 0

摘要

第二代(2G)生物乙醇是由木质纤维素生物质生产的绿色液体运输燃料。2G生物乙醇的生产和使用涉及几个阶段。因此,需要评估2G生物乙醇对生态系统各个部分的影响。生命周期评估(LCA)使用几个因素来解释2G生物乙醇的完整环境影响。本文对近年来有关2G生物乙醇的LCA研究进行了综述和分析。最近的发现最近的LCA研究表明,使用生物乙醇混合汽油可以减少温室气体排放。生物乙醇的净能比为1。然而,由于作物栽培和生物质预处理过程中使用的化学品,生物乙醇的酸化和富营养化潜力很高。LCA研究还建议将木质素用于封闭碳循环的电力热电联产。ca分析表明,在生物乙醇生产过程中使用可再生资源(太阳能/风能和生物肥料)可以提高2G乙醇的可持续性。
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2G Bioethanol for Sustainable Transport Sector: Review and Analysis of the Life Cycle Assessments

Purpose of Review

Second-generation (2G) bioethanol produced from lignocellulosic biomass is green liquid transportation fuel. Manufacture and use of 2G bioethanol involves several stages. Hence, the impact of 2G bioethanol on all segments of ecosystem needs to be assessed. Life Cycle Assessment (LCA) accounts for the complete environmental impact of 2G bioethanol using several factors. This review has presented an overview and analysis of recent literature on LCA of 2G bioethanol.

Recent Findings

Recent LCA studies reveal reduction in GHG emissions with bioethanol-blended gasoline. The net energy ratio of bioethanol is > 1. However, bioethanol's acidification and eutrophication potential is high due to chemicals used during crop cultivation and biomass pretreatment. LCA studies also suggest use of lignin for electricity co-generation for closed carbon cycle.

Summary

LCA analysis reveals that use of renewable resources during bioethanol manufacture (solar/wind electricity and biofertilizers) can enhance the sustainability of 2G ethanol.

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来源期刊
Current Pollution Reports
Current Pollution Reports Environmental Science-Water Science and Technology
CiteScore
12.10
自引率
1.40%
发文量
31
期刊介绍: Current Pollution Reports provides in-depth review articles contributed by international experts on the most significant developments in the field of environmental pollution.By presenting clear, insightful, balanced reviews that emphasize recently published papers of major importance, the journal elucidates current and emerging approaches to identification, characterization, treatment, management of pollutants and much more.
期刊最新文献
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