Bioethanol From Sugarcane Waste (Bagasse) Using Bacterium Clostridium Thermocellum

Ari Permana Putra1), Delmar Zakaria Firdaus1), Ginanjar Ummi Pratiwi1)Departement of Agroindustrial Technology, Faculty of Agricultural Technology and Engineering, Bogor Agricultural University

Bogor, West Java, Indonesia

The 1st Annual International Scholars Conference in Taiwan 2013Asia University, Taichung, TaiwanApril 27th – 29th 2013

Thermal Inversion

Smog surrounds the Angel Monument in Mexico City, Mexico, during a thermal inversion. Air pollution increases dramatically when a mass of cold air is trapped below a mass of warmer air. The absence of air circulation prevents pollution near Earth’s surface from escaping.

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Starts from The Problems

Energy Crisis

The use of fossil fuels these days are very closely related to the problem of energy crisis. Fossil fuels are formed and stored materials in the earth that comes from animals and microorganisms were buried millions of years.

Based on these facts, the fossil fuel is a fuel that can not be renewed because it requires a very long process in its formation

Comes with The IdeasBioethanol 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%)

How we make it?During this time, bioethanol was produced from molasses (sugar production process waste) or starchy materials (cassava or corn).

But,we face another problem

Cassava, Corn, etc.Source of Food

find other sources of raw materials

containing polysaccharides and not be used as food!

Bagasse!

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

Sugarcane Planted Area456,700 in (Ha)spread on Sumatra, Java, Kalimantan, and Sulawesi

tons of bagasse can produced100 each hectares in a year

Bagasse in Numbers

National potential of bagasse

4,567,0000tons each hectares in a year

BioethanolProduction

Process

1st Step

2nd Step

3rd Step

PretreatmentProcess

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

BioethanolProduction

Process*

1st Step

2nd Step

PretreatmentProcess

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

Fermentation Tank Distillation Purification Bioethanol

The prepared medium/bagasse (mashed)

Bacterium Clostridium

thermocillum

Scheme Process of Bioethanol Production

Conclusion

Energy Crisis

The use of fossil fuels these days are very closely related to the problem of energy crisis. Fossil fuels are formed and stored materials in the earth that comes from animals and microorganisms were buried millions of years.

Based on these facts, the fossil fuel is a fuel that can not be renewed because it requires a very long process in its formation

• There are two big problems if using the fuel oil continually, the energy crisis and negative effect to environment such as greenhouse effect.

• Therefore, needs a fuels alternative to solve this problem. One of the fuel alternative as substitute fuel oil is bioethanol from sugarcane waste (bagasse). It’s potential because bagasse are abundant, so bioethanol from bagasse can creating new high-paying jobs, increasing market opportunities for farmers, generating additional household income tax and revenues, and simultating capital investment.

• Beside that, using bacteria Clostridium thermocellum can make the process bioethanol production are cheap and fast.

Thank You

Have A Nice Day!