Bioethanol Production

BioEthanol Production Speaker: Abeda Sultana

Raw Materials  Sugar:

The most widely used sugar for ethanol fermentation is blackstrap molasses which contains about 35 – 40 wt% sucrose, 15 – 20 wt% invert sugars such as glucose and fructose, and 28 – 35 wt% of non-sugar solids.  Starches: All potable alcohol and most fermentation industrial alcohol is currently made principally from grains.  Cellulosic Materials: Each step in the process of the conversion of cellulose to ethanol proceeded with 100% yield.

Ethanol production from corn  Milling  Liquefying

and Heating the

Cornmeal.  Enzyme Hydrolysis  Yeast Fermentation:  Distillation  Dehydration

Milling

Liquefying and Heating the Cornmeal

Enzyme Hydrolysis

Yeast Fermentation

Distillation

Dehydration

Ethanol ultra-low emissions bus

Use of Biofuel Motor Fuel:  Ethanol is the most common biofuel,

and over the years many engines have been designed to run on it.  Ethanol performs well as a fuel in cars, either in a neat form or in a mixture with gasoline. E85 (85%Ethanol) mail Van

Motor Fuel  In

addition to ethanol/gasoline blend markets, ethanol has other motor fuel applications including:  Use as E85, 85% ethanol and 15% gasoline,  Use as E100, 100% ethanol with or without a fuel additive, and  Use in oxy-diesel, typically a blend of 80% diesel fuel, 10% ethanol and 10% additives and blending agents. Ethanol Pump at Sao Paulo, Brazil

Direct electricity generation  The methane in biogas is often pure enough

to pass directly through gas engines to generate green energy. Anaerobic digesters or biogas powerplants convert this renewable energy source into electricity. This can either be used commercially or on a local scale.

Home use  Different

combustion-engines are being produced for very low prices lately. They allow the private house-owner to utilize low amounts of "weak" compression of methane to generate electrical and thermal power (almost) sufficient for a well insulated residential home.

Bioethanol Refineries in Europe Nedalco 2,2 Blue Ocean 1,0

Sudzucker 3,0

BER 1,0 British Sugar 0,7

Alcodis 1,0

Agroetanol 0,5

Abengoa 2,0

Nawaro 2,0

Wessex Grain 1,3

Tereos 2,5 Tereos 2,0

Sekab 1,0

Sauter 1,8

Brazil 17 bl ethanol/y USA 17 bl ethanol/y EU 4 b l/y, incl. 70% biodiesel

Brasco 1,0 Sudzucker 2,6 Sauter 1,0

Crystal Union 2,5 Roquette 2,0

Agrana 2,0 Projectplan

Abengoa 1,8

Production JV Abengoa 2,25

Abengoa 2,0

Abengoa 1,5

JV Alceste 1,0

Bioethanol Refinery Examples in Europe

Cellulose, 2006

Wheat and barley waste

Wheat & winery waste

Wood chips, pilot

Beyond Bioethanol.......

Biodiesel and oleochemicals