2G Bioethanol for Sustainable Transport Sector: Review and Analysis of the Life Cycle Assessments

被引：0

作者：

Umesh, Vijayanand Suryakant

Moholkar, Vijayanand Suryakant ^{[1
,2
]}

机构：

[1] Indian Inst Technol Guwahati, Sch Energy Sci & Engn, Gauhati 781039, Assam, India

[2] Indian Inst Technol Guwahati, Dept Chem Engn, Gauhati 781039, Assam, India

来源：

CURRENT POLLUTION REPORTS | 2025年 / 11卷 / 01期

关键词：

Bioethanol; Life Cycle Assessment; Lignocellulosic biomass; Global warming potential; ETHANOL-PRODUCTION;

D O I：

10.1007/s40726-025-00340-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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.

引用

页数：11

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