Feasibility of Study of the Production of Anhydrous Ethanol from Sugar Beet

Running Head: FEASIBILITY OF STUDY OF THE PRODUCTION OF ANHYDROUS
ETHANOL FROM SUGAR BEET 1
Feasibility of Study of the Production of Anhydrous Ethanol from Sugar Beet
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FEASIBILITY OF STUDY OF THE PRODUCTION OF ANHYDROUS ETHANOL FROM
SUGAR BEET 2
Introduction
Presently, the shortage of fossil fuels and their contribution to environmental challenges
have resulted in the research of non-conventional renewable energy sources. Currently, the
energy requirement production and chemical production is attained by using wastes from either
processing industries (Hossiso &Ripplinger, 2017). The use of industrial-waste approach is the
sustainable strategy since it does not put more pressure on the scarce agricultural crops. For these
reasons, the application of ethanol obtained from carbohydrates as a substitute of petroleum has
been recognized and many countries have adopted it. Even though Sweden has adopted
producing ethanol from agricultural crops, it has not put much of her interest in producing
ethanol from sugar beets. The production of beet-sugar in Sweden is the same as production
systems in other European Union countries. In 2003, about 417,000 tons of sugar was from
50,000 ha of beets (Jacobs, 2006). In addition, 85 percent of beets are cultivated at the southern
part of the Scania region. According to the availability of raw materials (beets) in the southern
Scania region of Sweden, the proposed beet-anhydrous ethanol processing plant would be
established in the southern part of Scania to cut down the cost of transportation.
There are several routes of converting sugar beet to ethanol. However, the main and
economical route is the complete sugar processing from sugar beet and using its by-product
(molasses) in producing ethanol (Maung & Gustafson, 2010). The processes of converting
molasses from sugar beet involve fermentation and distillation. Theoretically, this fermentation-
distillation route produces 96% of ethanol. Though due to various factors to attain 96% is not
always possible but, the produced ethanol is still within allowable standards of ethanol in

FEASIBILITY OF STUDY OF THE PRODUCTION OF ANHYDROUS ETHANOL FROM
SUGAR BEET 3
Sweden. The chemical reactions that take place during conversion of sugar beet (glucose) to
ethanol are illustrated in Equation 1.
Glucose (production of yeast) →Fermentation →(about 8 to 10 ethanol solution) →Distillation
→96% ethanol ..............................................Equation 1
Material and Energy Balances
According to the law of conservation of mass, mass cannot vanish or be generated
extemporaneously. Therefore, mass input must be the same as the mass out. This means that the
amount of sugar beet charged in the processing must be equal to the output products (finished
sugar and molasses). In this design, we are only concerned about ethanol production. So, our
target is the molasses from the complete sugar beet processing plant. A plant that can produce
10,000m3 of ethanol per year requires about 2,785.33951 tons/hour tons of raw sugar beet to be
charged in the process per hour. The calculations below indicate how the amount of 2,785.33951
tons/hour tons of sugar beet is arrived at.
Ethanol production per year
1m3= 2,406.53Kg
100,000m3= (240653026.26kg/1000kg) = 240653.0262 tons/year
Ethanol production per month
240653.0262 tons/12=20054.41885 tons/month
Ethanol production per day