Energy balance and global warming potential of corn straw-based bioethanol in China from a life cycle perspective
Energy balance and global warming potential of corn straw-based bioethanol in China from a life cycle perspective
复制标题
从生命周期角度看中国玉米秸秆生物乙醇的能量平衡和全球变暖潜力
DOI：
10.1080/15435075.2017.1382361
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发表时间：
2018-03
影响因子：
3.3
通讯作者：
Zhang Xiaomei
中科院分区：
文献类型：
--
作者：
Xu Xiaoning;Yang Yanli;Chen Xiao;Zhang Xiaomei
摘要我国是世界第二大玉米生产国，拥有丰富的玉米秸秆资源。从生命周期的角度对中国玉米秸秆生物乙醇生产和利用的能量平衡和全球变暖潜力进行了评估。结果表明，与车用汽油和柴油相比，生物乙醇作为汽油和柴油混合燃料可分别降低10%~ 97%和4%~ 96%的全球变暖潜势。基于玉米秸秆的生物乙醇系统产生的总全球变暖潜势、净全球变暖潜势、净能量和每MJ乙醇的净能量比分别估计为0.20 kg CO2-eq、0.012 kg CO2-eq、0.60 MJ和1.87。通过敏感性分析发现，秸秆的收集系数和压缩密度对能量平衡的影响较为明显;运输距离对全球变暖潜势排放因子的影响较为明显。副产品可用作肥料、动物饲料、水泥替代品或高价值木质素化学品，这有助于抵消每MJ乙醇0.28 MJ的能量消耗。
ABSTRACT As the second largest corn producer in this world, China has abundant corn straw resources. The study assessed the energy balance and global warming potential of corn straw-based bioethanol production and utilization in China from a life cycle perspective. The results revealed that bioethanol used as gasoline and diesel blend fuel could reduce global warming potential by 10%–97% and 4%–96%, respectively, as compared to gasoline and diesel for transport. The total global warming potential, net global warming potential, net energy, and Net Energy Ratio per MJ ethanol generated from corn straw-based bioethanol system are estimated to be 0.20 kg CO2-eq, 0.012 kg CO2-eq, 0.60 MJ, and 1.87, respectively. By using sensitivity analysis, we found that the collected coefficient and compressing density of straw have a more obvious influence on energy balance; transportation distance has a more obvious influence on global warming potential emission factor. The by-products may be utilized as fertilizer, animal feed, cement replacement, or high-value lignin chemicals, which make a contribution to offsetting 0.28 MJ per MJ ethanol of energy consumption.
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DOI：
10.1201/9781482292817-29
发表时间：
1985-11
期刊：
--
影响因子：
--
作者：
L. Douglas
通讯作者：
L. Douglas
影响因子：
9
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Qing Yang;Guoqian Chen
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DOI：
10.1002/9781119771951.ch10
发表时间：
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Biomolecular Engineering Solutions for Renewable Specialty Chemicals
影响因子：
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通讯作者：
Ramiya Baskaran;V. Natarajan;Shereena P. Joy;C. Krishnan
影响因子：
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影响因子：
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作者：
T. Silalertruksa;S. Gheewala;M. Sagisaka;Katsunobu Yamaguchi
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