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Bioethanol
Bagasse, a waste product of sugarcane processing, can be used to produce bioethanol through fermentation. Bagasse contains cellulose that can be broken down through pretreatment and hydrolysis into glucose, then fermented by bacteria like Clostridium thermocellum into bioethanol. Producing bioethanol from bagasse provides an environmentally friendly alternative fuel and makes use of an agricultural waste product.
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Bioethanol
- 1. Bioethanol Production fromBagasse
- 2. BIOETHANOL Bioethanol is aform 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 ofBioethanol
- 4. Comes with TheIdeas 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 anotherproblem Cassava, Corn, etc. Source of Foodfind other sources of raw materials containing polysaccharides and not be used as food! Bagasse!
- 6. Meet Bagasse! Bagasse isan 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 bagassecan 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 Aimedto 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 Aimedto 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 Theprepared medium/bagasse (mashed) Bacterium Clostridium thermocillum Scheme Process of Bioethanol Production
- 11.
- 12. Advantages Disadvantages Ethanol isa 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 annuallyimports about 3.5 million tons of different fuel oils. Bioethanol is the most potential renewable energy source to mitigate this energy crisis.
- 14. REFERENCES- • Abbi M.,Kuhad R.C., Singh A.(1996). Bioconversion of pentose sugars to ethanol by 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.