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Ethanol Production with 4 Varieties of Sweet Potato at Different Growth Stages(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

2009 02
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Ethanol Production with 4 Varieties of Sweet Potato at Different Growth Stages
JIN Yanling1 2 GAN Mingzhe1 2 ZHOU Lingling1 XUE Huiling1 2 ZHANG Liang1 2 & ZHAO Hai1**
(1Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China)
(2Graduate University of Chinese Academy of Sciences, Beijing 100049, China)
sweet potato variety fuel ethanol growth stage productivit
TK6 : S531.099 : TQ920.6

Four varieties of sweet potato at different growth stages in Sichuan, China, and their contents of fermentable sugar and ethanol fermentation parameters were investigated. The results indicated that the fuel ethanol yields of variety 1 and variety 2 were 4.79 t hm-2 and 4.83 t hm-2 , respectively, which were higher than that of Nanshu 88 (4.58 t hm-2). When variety 1 and variety 2 grew for 130 d, their ethanol productions were fastest with yields of 36.84 kg hm-2 d-1 and 37.13 kg hm-2 d-1 , respectively, while that of Nanshu 88 was 35.24 kg hm-2 d-1. To produce 1 ton of ethanol, the feedstock consumption amounts were found in an order as: variety 1 (6.40 t)<variety 2 (6.49 t)<variety 3 (7.31 t)<Nanshu 88 (9.17 t), and the residue discharge amounts (in dry basis) after ethanol fermentation were found in an order as: variety 1 (0.56 t )<variety 3 (0.60 t)<variety 2 (0.63 t)<Nanshu 88 (0.64 t), which indicated that variety 1 could be suitable for ethanol production in Sichuan and it could be harvested after growing for 130 d based on its economic view. Fig 4, Tab 1, Ref 14


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Last Update: 2009-05-05