Ethanol from Indian agro-industrial lignocellulosic biomass: an emergy evaluation
Ethanol from Indian agro-industrial lignocellulosic biomass: an emergy evaluation
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DOI：
10.1007/s10098-016-1179-y
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发表时间：
2016-08
影响因子：
4.3
通讯作者：
Prasad Mandade;B. Bakshi;G. Yadav
中科院分区：
文献类型：
--
作者：
Prasad Mandade;B. Bakshi;G. Yadav
这项研究评估了印度用于生产乙醇的生物质原料--稻壳、小麦秸秆、棉花秸秆、高粱秸秆和甘蔗渣的环境性能。分析计算了能值指标，论证了印度政府生物燃料政策确定的乙醇混合目标在生物质原料选择上的两难境地。它考虑了空间变异性，并计算了研究中考虑的每种木质纤维原料的生产潜力。对于被考虑的原料来说，同时实现高能源投资回报、高可再生性和高生产率似乎很困难。在这些纤维素原料中，稻壳具有最高的可再生性和乙醇生产潜力。虽然高粱秸秆的投资回报率很高，但在研究中考虑的原料中，它的可再生性最低。稻壳和棉秆应首先满足汽油的调合需求，因为它们具有最高的可再生性和质量校正的能值投资回报，以及较高的生产潜力。对纤维素生物燃料的能值分析可以为决策者在印度的背景下设计生物燃料政策和选择原料提供一个全面的平台。
This study assesses the environmental performance of biomass feedstocks, rice husk, wheat stalk, cotton stalk, sorghum stalk, and sugarcane bagasse, for ethanol production in India. The analysis calculates emergy indicators and demonstrates the dilemma in selection of biomass feedstocks for meeting the ethanol blending target decided by the biofuel policy of the Government of India. It considers spatial variability, and computes the production potential of each lignocellulosic feedstock considered in the study. Achieving high return on energy invested, high renewability, and large production rates simultaneously seems difficult for the considered feedstocks. Among these cellulosic feedstocks, rice husk shows highest renewability and ethanol production potential. Although sorghum stalk has a high return on investment, it has lowest renewability among the feedstocks considered in the study. Rice husk and cotton stalk should be targeted first to fulfil the blending demand of gasoline as they show highest renewability and quality corrected emergy return on investment, along with a high production potential. Emergy analysis of cellulosic biofuels can provide a holistic platform for decision makers for designing the biofuel policy and selection of feedstock in the Indian context.