Lecture 11 Flashcards
Crops that have received attention for bioenergy potential
Sorghum, sugarcane, bamboo, hemp, Jerusalem artichoke, eucalyptus, and cassava
Factors that come into play when considering a crop for bioenergy
Climate, soil, policy, availability of food, perennial vs. annual, etc.
Top producer and user of sugarcane
Brazil
Sugar that is in sugarcane juice
Sucrose
Is the juice of sugarcane easily fermented
Yes
Bagasse
Leftover material from sugarcane
What is bagasse used for
Bulk fuel for burning abd as a lignocellulosic feedstock for ethanol
Sorghum
Popular grass grown for grain (starch) and for sugary stems used for syrup (sweet sorghum)
What climates does sorghum grow in
Warm (Africa, Asia, and South America - also in US)
Is Sorghum annual or perennial
Annual
How often does sorghum need to be planted
Each year
Bamboo
Extremely woody and fast-growing plant
Is there a lot of data on bamboo for bioenergy
No
Why isn’t there much research on bamboo as a bioenergy
Because there is a whole economy surrounding bamboo already (food, paper, construction, traditional medicine)
What is hemp a variety of
Cannabis sativus
THC content of hemp
Low
What can the fiber (cellulose) of hemp be used for
Feedstock
What can the oil of the hemp seeds be used for
Biodiesel with low viscosity
Another name for the Jerusalem artichoke
Sunflower
Is the sunflower annual or perennial
Annual
What are the tubers of the sunflower composed of
Inulin (not starch)
Inulin is a polymer of ____
Fructose
How tall do sunflowers grow
10 feet
Fructose is similar to ___
Glucose
What part of the sunflower could be used for bioenergy
Entire plant
What is the sunflower seed oil used for in bioenergy production
Biodiesel
Cassava type of plant
Shrub
What does cassava produce
Starchy tuber
Starch from cassava tubers
Tapioca
Where do cassava need to be planted
Do not require prime land
What can cassava tubers be used for
Ethanol production
What can the woody shrub of the cassava be used for
Lignocellulosic technology
Eucalyptus
Trees that are very fast growing and woody
Where does eucalyptus thrive
Tropical, warm environments
What is eucalypus used for in bioenergy
Burning fuel, pulp and paper, medicine (especially oil)
