Planting Sweet Sorghum Under Hot and Dry Climatic Condition for Bioethanol Production

A. Almodares
University of Isfahan, Isfahan, Iran

M. S. Hatamipour
University of Isfahan, Isfahan, Iran

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp11057266

Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:36, s. 266-272

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Publicerad: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


Plants are the best choice for meeting the projected bio-ethanol demands.For this scope; a comparative analysis of the technological options using different feed stocks should be performed. Sweet sorghum can be used as a feedstock for ethanol production under hot and dry climatic conditions. Because; it has higher tolerance to salt and drought comparing to sugarcane and corn that are currently used for bio-fuel production in the world. In addition; high carbohydrates content of sweet sorghum stalk are similar to sugarcane but its water and fertilizer requirements are much lower than sugarcane. Also; sugarcane is not a salt tolerant plant. On the other hand; high fermentable sugar content in sweet sorghum stalk makes it to be more suitable for fermentation to ethanol.In this work; planting sweet sorghum in hot and dry provinces of Iran generally produced 80 tons stalks; 5 tons grains and 15 tons green leaves per hectare. However comparison among 29 sweet sorghum cultivars and lines showed that Rio had higher biomass (117.14t/ha); stalk yield (95.00t/ha); grain yield (5.00t/ha) and leaves (17.00 t/ha). It is interesting to point out that sweet sorghum could be cultivated in southern parts of Iran 3-4 times per year. Based on these results it is more economical to plant sweet sorghum for bio-ethanol production in hot and dry regions of the world.


Sweet sorghum; carbohydrate; bio-ethanol; bio-fuel


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