Table 4

Current and Future scenario technology parameters

Parameter

Unit

Current

Future


Crop type

-

Straw residue

SRC hybrid poplar

Crop yield

odt ha-1 year-1

5

25


Pretreatment method

-

Dilute acid

CO2 explosion

Process integration

-

SSF

CBP

Pretreatment conversion*

%cellulose

75.0

98.0

Fermentation conversion

%sugars

95.0

95.0

Ethanol yield**

lEtOH odt-1

281

382


Process titre

wt%EtOH

5.0

35.0

Process hot utility

MJ MJEtOH-1

0.17

0.00

Distillation hot utility***

MJ MJEtOH-1

0.26

0.20


*Assumes equal conversion of both cellulose and hemicellulose fractions

**Pure ethanol product

***Distillation includes both Stripping and Rectification stages for the Current technology

Dunnett et al. Biotechnology for Biofuels 2008 1:13   doi:10.1186/1754-6834-1-13

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