Ethanol Production Using Organic Waste

Daewon Pak, Jun Cheol Lee, Jae Hyung Kim

Graduate School of Energy and EnvironmentSeoul National University of Technology

Research Background

Bioethanol in Korea

3 - 5% ethanol blends 3 - 5% ethanol blends

High oil priceHigh oil price

Reduce global warming gasReduce global warming gas

3 - 5% ethanol blends with gasoline (E3 and E5)

3 - 5% ethanol blends with gasoline (E3 and E5)

Renewable energy(5% of total energy in 2011)

Renewable energy(5% of total energy in 2011)

Low bioenergy share(5.3% of renewable energy

in 08)

Low bioenergy share(5.3% of renewable energy

in 08)

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Food waste production Food waste production (ton/day)

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pH 6DOLQLW\Alkalinity(mg/L)

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Total solid(g/L)

SCOD(g/L)

TCOD(g/L)

4.5 4.8 0.1 0.3 130 - 138 163 - 190 62 - 98 150 - 180

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DosageEnzyme Control 0.1% 0.5% 1.0% 5.0% 10.0%

Glucoamylase(Spirizyme) 0.003 0.241 0.314 0.384 0.414 0.436(Spirizyme) 0.003 0.241 0.314 0.384 0.414 0.436

Carbohydrase (Viscozyme L) 0.003 0.379 0.481 0.495 0.522 0.627

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Saccharification

Enzyme

Food wastes Ethanol Fermentation

Microbes

Ethanol

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Saccharification &Ethanol Fermentation

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Ethanol

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