Energy and eMergy evaluation of bioethanol production from wheat in Henan Province, China

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	Energy and eMergy evaluation of bioethanol production from wheat in Henan Province, China
	Yan Maochao
	2008
关键词	Computer networks Energy policy Grain (agricultural product) International trade Raw materials
英文摘要	Ethanol production from wheat has become an emerging economic activity in Henan Province due to the establishment in 2001 of the National Program for Alcohol Production. The program aimed at facing the unfolding world energy crisis in the near future and increasing China's energy security. Instead, in spite of claims for "green energy", such an activity is likely to generate great environmental damage and social problems. Moreover, the international market prices for raw materials (especially cereals) and fossil oil are putting this activity under siege. This research presents an energy and eMergy analysis of a typical wheat plantation/alcohol distillery system, in the Henan Province. Comparison is drawn with bioethanol production in Italy, based on corn from intensive, industrialized agriculture. Energy and eMergy indices of ethanol production from wheat and corn in the two agro-industrial systems are respectively as follows: output/input energy ratio, 1.09 (wheat) and 1.19 (corn); transformity of bioethanol, 2.77×105 and 1.89×105 seJ/J; renewability, 20% and 11%; eMergy yield ratio, 1.24 and 1.14; environmental loading ratio, 4.05 and 7.84; and finally eMergy sustainability index, 0.31 and 0.15. Results show that bioethanol from food crops is not a sustainable source of fuel. © 2008.
出处	Energy Policy
卷	36 期:10 页:3882-3892
收录类别	EI
语种	英语
内容类型	EI期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/24961]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Yan Maochao. Energy and eMergy evaluation of bioethanol production from wheat in Henan Province, China. 2008.