Unit 1.2 – Questions

1. What is a first generation biofuel?

a. Ethanol derived from cellulosic materials, such as switchgrass or miscanthus
b. Ethanol derived from the fermentation of sugars, derived from crops such as wheat, corn, or sugar cane
c. Pretreatment of cellulosic biomass to break apart and release sugars for fermentation to ethanol

 

2. What are second generation biofuels?

a. Ethanol derived from cellulosic materials, such as switchgrass or miscanthus
b. Ethanol derived from the fermentation of sugar and starch crops, such as wheat, corn, or sugar cane
c. Pretreatment of cellulosic biomass to break apart and release sugars for fermentation to ethanol

 

3. True or False: The technical parameters for biopower (electricity generated from combustion of biomass) are well developed.

a. True
b. False

 

4. How are liquid and gas biofuels produced?

a. Fermentation (to produce bioethanol)
b. Gasification (to produce syngas)
c. Pyrolysis (to produce syngas and char)
d. Torrefaction (to produce bio-coal)
e. Transesterification (to produce biodiesel)
f. Anaerobic digestion (to produce pipeline quality gas)
g. All of the above

 

5. Why is it important to develop combined heat and power (CHP) units?

a. Federal policy mandates it
b. Large scale electricity generation facilities have invested heavily in it
c. Combined heat and power is many times more efficient than combustion for electricity generation alone.

 

6. What are potential reasons that an electric utility might opt to burn woody biomass in a powerplant?

a. To meet renewable energy standards
b. To reduce amount of materials that would have to be transported to the boiler
c. To cut back on pollution from coal burning
d. To improve boiler efficiency
e. A and C above
f. B and D above

 

7. What are the main sources of woody biomass?

a. Forests
b. Agriculture
c. Sawmill waste
d. A & B above
e. A & C above

 

8. What are the main types of agriculture based energy crops?

a. Corn, switchgrass, and miscanthus
b. Soybean, sunflower, and canola
c. Willow and poplar
d. Perennial lignocellulosic crops, lignocellulosic residues, sugar and starch crops, and oil-producing crops.
e. Corn stover, rice chaff, oat husks

 

9. What are examples of waste-based feedstocks?

a. Sawdust
b. Landfill gases
c. Construction wastes
d. Compostable materials
e. Manure
f. All of the above

 

10. True or False: Bioenergy by-products are insignificant in determining the profitability of a bioenergy enterprise.

a. True
b. False

 

Unit 1.2 Answers