Lecture 5 - Biofuel Flashcards
0
Q
To be a viable substitute for a fossil fuel an alternative fuel must:
A
Have superior environmental benefits
Be economically competitive
Be producible in sufficient quantities
Provide a net energy gain
1
Q
What is the greenest fuel?
A
Optimized manure
2
Q
How is purified oil made?
A
Oil crops are extracted then purified
3
Q
How is biodiesel made?
A
Oil crops are exteacted, purified and then undergo transesterification
4
Q
How is bioethanol made?
A
Starch crops are hydrolysed, fermented and distilled
Or lignocellulosic biomass is pre-treated, hydrolysed, fermented and distilled
5
Q
How is butanol/methanol/hydrogen made?
A
Lignocellulosic biomass is gasified, fermented and distilled
