UPSC Previous Year Question | Prelims GS | 2024

Consider the following materials: 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?

  1. 1 and 2 only
  2. 3 and 4 only
  3. 1, 2, 3 and 4
  4. 1, 3 and 4 only

Answer

Correct Answer

1, 2, 3 and 4

Explanation

All four materials can serve as feedstocks for producing Sustainable Aviation Fuel (SAF) through suitable conversion pathways. Agricultural residues and wood mill waste provide biomass; corn grain can be processed into fuel intermediates; and wastewater-treatment sludge contains organic material that can be converted through appropriate technologies. SAF can be produced from several types of biomass and waste-derived raw materials, so none of the four listed materials is categorically excluded.

Topics: biofuel feedstocks, environment and ecology, sustainable aviation fuel, sustainable energy