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Progress on cellulosic ethanol produced from beet pulp
Dan Li, Lin Yuan, Meng Li, Guanhua Li
School of Life Sciences, Inner Mongolia University, Hohhot 010021, Inner Mongolia, China

Received: September 10, 2015; Accepted: December 21, 2015
Supported by:Desconstruction of Recalcitrance to Enzymatic Hydrolysis of Sugar-beet Pulp: Technology and Mechanism (No. 2015BS0201), Solid State Fermentation of Cellulase (No. 21400-5145138)
Corresponding authors:Guanhua Li. Tel/Fax: +86-471-4992476; E-mail: liguanhua1984@126.com


Abstract: Cellulosic ethanol, with the advantages of renewable resource, cleanliness and safety, is the mainstream of new energy development and has obtained extensive attention worldwide. In this review, the biological characteristics of beets were introduced, and then the superiority and application progress of beets and its by-product sugar beet pulp in the bioethanol production were stated. At last, cellulosic ethanol production coupled with the component separation and comprehensive utilization of beet pulp was proposed.
Key words: bioenergy cellulosic ethanol sugar beet pulp fractionation
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±í 1 ¼¸ÖÖ²»Í¬È¼ÁϵÄÄÜÔ´º¬Á¿¶Ô±ÈTable 1 Energy content of some fuels compared with ethanol
Fuel type Energy content (MJ/L) Energy content (MJ/kg) Octane
Liquefied natural gas 25.3 55.0 ¡ª
Diesel 38.6 45.4 25
Methanol 17.9 19.9m 5.4pt 0cm 5.4pt; height: 108.7
Ethanol 21.2 26.8 108.6
Regular gasoline 34.8 44.4 91
E85 (85% ethanol,15% gasoline) 25.2 33.2 105
Gasohol (10% ethanol,90% gasoline) 33.7 47.1 93/94

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1 Ìð²ËÔüת»¯ÉúÎïÒÒ´¼µÄÓÅÔ½ÐÔ¼°²»×ã1.1 Ìð²ËÔüת»¯ÉúÎïÒÒ´¼µÄÓÅÔ½ÐÔ1.1.1 Ìð²ËÔü²úÁ¿´óÈ«ÇòÌð²ËÖÖÖ²×ÜÃæ»ý´ï8¡Á106 hm2£¬ÔÚÊÀ½çÅ©²úÆ·×ܲúÁ¿ÖÐÅÅÃûµÚ10£¬Ô¼Õ¼ÌÇÁÏ×÷ÎïµÄ48%£¬´ÎÓÚ¸ÊÕá¶ø¾ÓµÚ2λ¡£2009?2013ÄêÊÀ½ç
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±í 2 2009-2013ÄêÌð²Ë²úÁ¿ÅÅÃûǰʮµÄ¹ú¼ÒTable 2 Top ten sugar beet producer during 2009 to 2013
2009 ¡Á107(t/y) 2010 ¡Á107(t/y) 2011 ¡Á107(t/y) 2012 ¡Á107(t/y) 2013 ¡Á107(t/y) Average annual production ¡Á107 (t/y)
Russia 2.49 2.23 4.76 4.51 3.93 3.58
France 3.51 3.19 3.81 3.37 3.36 3.45
United States 2.70 2.91 2.62 3.20 2.98 2.88
Germany 2.59 2.34 2.96 2.77 2.28 2.59
Turkey 1.73 1.79 1.61 1.50 1.65 1.66
Ukraine 1.01 1.37 1.87 1.84 1.08 1.44
Poland 1.08 1.00 1.17 1.23 1.06 1.11
China 0.72 0.93 1.07 1.17 0.93 0.96
Egypt 0.53 0.78 0.75 0.91 1.00 0.80
United Kingdom 0.85 0.65 0.85 0.73 0.80 0.78
World 22.81 22.86 27.81 26.96 24.65 25.02
Source: FAOSTAT

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±í 3 ³£¼ûľÖÊÏËÎ¬ËØÔ­Áϼ°Æä3ÖÖ×é·Öº¬Á¿[9]Table 3 Common lignocellulosic biomass feedstock and their components[9]
Feedstock Cellulose (%) Hemicellulose (%) Lignin (%)
Corn stalks 40 30 24
Wheat straw 33-38 26-32 17-19
Bagasse 43 31 11
Beet pulp 26 28 3
Newsprint 40-55 25-40 18-30
Wastepaper 60-70 10-20 5-10

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