1. DuPont Biofuels: Building a Sustainable Future
September 27, 2007

2. DuPont Biorefinery Value Chain Carbohydrates to Chemicals and Biofuels
Plant
Feedstocks
Biofuels
Biochemicals
Fermentation
Processes
Agricultural Inputs
Conversion to Sugars
Seed
Crop Protection CO 2
Sugar
Starch
Ethanol
Biochemicals
Biobutanol
Bio-PDOTM
Cellulose
Differentiated
Products
Biofuels
Leveraging Relationships and Expertise Along the Value Chain
September 27, 2007

3. Biofuels Global Market Perspective
Current Biofuel Challenges:
PIPELINE
COMPATIBILITY
BIOFUEL PRODUCTION
PRODUCTION COST
FEEDSTOCK AVAILABILITY
REFINERY
BLEND FLEXIBILITY
TERMINAL
FUEL STABILITY
RETAIL / AUTO INDUSTRY / CONSUMER
FUEL EFFICIENCY – MPG
VEHICLE MODIFICATIONS
INFRASTRUCTURE MODIFICATIONS
September 27, 2007

4. Biofuels Sustainability: DuPont’s 3 Targeted Solutions
Improving corn bushels per acre and ethanol gallons per bushel
Seed/Crop Protection Solutions
Supplementing ethanol by developing and supplying next generation biofuels with improved performance
Advanced Biofuels with Improved Performance
Developing and supplying new technologies to allow conversion of cellulose to biofuels
Cellulosic Ethanol Production
September 27, 2007

5. Advanced Biofuels – Preferred Attributes
Infrastructure Challenges and Opportunities
Uses existing biofuels value chain
Is easily added to gasoline used in existing vehicles
Is added to the fungible fuel pool using existing infrastructure to enhance sustainable growth
Is used in reasonable blend concentrations and requires no compromise in fuel specifications
Offers good value to consumers without performance compromise
Enhances the use of incumbent biofuels
September 27, 2007

6. Biobutanol: Next Generation Biofuel
RENEWABLE
FEEDSTOCKS
WORLDWIDE FUEL MARKETS
DuPont & BP
Powerful partnership
Shared commitment
Global reach
Complementary capabilities
September 27, 2007

7. RETAIL / AUTO INDUSTRY / CONSUMER
Biobutanol: Provides Greater Options for Sustainable Renewable Fuels
PIPELINE
BIOFUEL VALUE CHAIN
REFINERY
TERMINAL
SAME AGRICULTURAL FEEDSTOCKS
UTILIZE ETHANOL PRODUCTION ASSETS
LIMITED WATER ABSORPTION
FUNGIBLE BLENDING COMPONENT
LOWER VAPOR PRESSURE AIDS REFINERS
LESS CORROSIVE
UTILIZE EXISTING INFRASTRUCTURE
RETAIL / AUTO INDUSTRY / CONSUMER
BETTER FUEL CONSUMPTION
POTENTIAL FOR HIGHER BLEND LEVELS WITHOUT VEHICLE MODIFICATION
LOW VAPOR PRESSURE ALLOWS FOR POTENTIAL INCREASE IN ETHANOL BLENDING
PROMOTES USE OF EXISITING RETAIL PUMPS AND STORAGE
September 27, 2007

8. Cellulosic Ethanol Production
40 Gal/Acre
391 Gal/Acre
at 50%
removal
rate
155 Gal/Acre
310 Gal/Acre
Images: &
September 27, 2007

9. Cellulosic Ethanol Infrastructure Issues
Conversion
Pretreatment
Enzyme Saccharification
Cob
Handling, Storage,
Drying, & Transport
Fermentation
Production &
Separation
Feedstock
‘One Pass’
Harvest
Cellulosic biomass to the plant gate :
On-farm collection systems
Moisture issues
Storage
Transportation
Increasing yields / efficiencies
Downstream
Markets
Same as ethanol
Feedstock
Production
Government Support
National Energy Agenda
Incentives & Funding
September 27, 2007

10. Corn Cob Collection / Processing
Build on existing grain harvest system
Why Cobs?
12-25% of the above ground stover
2 times the bulk density of stover
16% more carbohydrate than stover alone
Collection options – one pass
Separate or
Grain/cob co-mingled “CCM”
Separation options
On farm processing
Off-site processing
Transportation and Storage options
Future Visions
September 27, 2007

11. DuPont Biofuels - Development Milestones
2007
2012
Seed & Crop Protection Solutions
Best Corn Hybrids – Ethanol Yield (now)
Direct processor – farmer connection (now)
Increased Ethanol – other options (in development)
Biobutanol
Biobutanol market development launch in UK (2007)
UK Development Plant (2009)
Biobutanol Sales (2010+)
Cellulosic Fuels
Demonstration Plant (2008)
Commercial Plant startup (by 2012)
September 27, 2007

12. The Biotechnology Opportunity
Meeting Food, Feed, Fuel, Materials Needs in a Safe, Sustainable Manner
Thank you
September 27, 2007