Consider the following materials:

Question

1. Agricultural residues

2. Corn grain

3. Wastewater treatment sludge

4. Wood mill waste

Which of the above can be used as feedstock for producing Sustainable Aviation Fuel?

(a) 1 and 2 only
(b) 3 and 4 only
(c) 1, 2, 3 and 4
(d) 1, 3 and 4 only

Answer 1

(c) 1, 2, 3 and 4

Explanation:

Sustainable Aviation Fuel (SAF) can be produced from a variety of feedstocks that include agricultural residues, corn grain, wastewater treatment sludge, and wood mill waste. These materials are converted into SAF using various processes such as hydroprocessing, gasification, and Fischer-Tropsch synthesis.

• Agricultural residues: These include crop leftovers like straw and husks, which are considered biomass feedstock for SAF production.

• Corn grain: Corn grain can be used to produce ethanol, which can then be converted into SAF through various chemical processes.

• Wastewater treatment sludge: This sludge can be processed and converted into biofuel, including SAF.

• Wood mill waste: Wood mill waste, such as sawdust and wood chips, is another form of biomass that can be converted into SAF.

All the listed materials can be utilized in the production of Sustainable Aviation Fuel, making option (c) the correct answer.