1. Bioethanol Production from Bagasse

2. BIOETHANOL
Bioethanol is a form of renewable energy that can
be produced from agricultural feedstocks.
Bioethanol is an alcohol made by fermentation,
mostly from carbohydrates produced in sugar or
starch crops such as corn, sugarcane, or sweet
sorghum.
used as a petrol substitute for road transport
vehicles.

3. Possible Sources of Bioethanol

4. Comes with The Ideas
Bioethanol Bioethanol is one of the
alternative fuels that have
advantage than fossil fuel
Why
Bioethanol?
Bioethanol used plants as the raw material, so
it does not make accumulation of carbon in
the atmosphere Ethanol can also increase the
efficiency of combustion because it contains
35% oxygen and environmental friendly
because dump of gas emissions such as
carbon monoxide, nitrogen oxides, and other
gases are low (19-25%) o
How we make
it? During this time, bioethanol was produced
from molasses (sugar production process
waste) or starchy materials (cassava or corn).

5. But,we face another problem
Cassava, Corn,
etc. Source of
Foodfind other sources of raw
materials containing
polysaccharides and not
be used as food!
Bagasse!

6. Meet Bagasse!
Bagasse is an industrial solid waste
from sugar cane containing cellulose
fiber and usually used as a raw
material for the paper industry
Bagasse waste not yet widely used.
This waste is one of the energy
sources potential and generally is a
cellulose material that can be
converted into ethanol

7. tons of bagasse can
produced100
each hectares in a year
Bagasse in Numbers
National potential of
bagasse is
4,567,0000
Tons in a year

8. Bioethanol
Production
Process
1st Step
2nd
Step
3rd Step
Pretreatment
Process
Hydrolysis
Process
Fermentation
Process
Aimed to break
down the lignin
structure and
disrupt the
crystalline structure
of cellulose
Aimed to change
glucose into
bioethanol
Aimed to change
cellulose into
glucose

9. Bioethanol
Production
Process*
1st Step
2nd
Step
Pretreatment
Process
Simultaneous
Saccharrification
and Fermentation
Aimed to break
down the lignin
structure and
disrupt the
crystalline structure
of cellulose
cellulose enzyme
and fermenting
microbes are added
to one vessel or
hydrolysis and
fermentation
happen in one
reaction vessel can
be done by
bacterium
Clostridium
thermocellum.
*with bacterium Clostridium
thermocellum

10. Fermentation
Tank
Distillation Purification Bioethanol
The prepared
medium/bagasse
(mashed)
Bacterium
Clostridium
thermocillum
Scheme Process of Bioethanol Production

11. APPLICATIONS

12. Advantages Disadvantages
Ethanol is a renewable resource Large amounts leading to problems
such as soil erosion, deforestation.
Ethanol burns more cleanly in air than
petroleum
Typical current engines would require
modification
The use of ethanol reduce carbon
dioxide emissions
Expensive
ADVANTAGES & DISADVANTAGES

13. CONCLUSION
 Bangladesh annually imports about 3.5 million tons of different fuel
oils.
 Bioethanol is the most potential renewable energy source to mitigate
this energy crisis.

14. REFERENCES-
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free and immobilized cells of Candida shehatate: Fermentation behaviour, Process
Biochemistry.31(6):555-560.
• Brandberg T., Karimi K., Taherzadeh M., Franzen C J., Gustasson L.(2007).
Continuous fermentation of wheat supplemented lignocellulose hydrolysate with
different types of cell retention, Biotechnology Bioengineering.98(1):80-9
• Cardona C.A., Sanchez O J.(2007). Fuel ethnol production: process design trends
and integration opportunities, Bioresource Technology.98:2415-2457
• Oura E.(1977). Reaction products of yeast fermentation, Process
Biochemistry.12(3):19-21
• Nguyen Q., Tucker M., Boynton B., Keller F., Schell D.(1998). Dilute acid
pretreatment of softwood, Applied Biochemistry Biotechnology.70-72, 77-87.