gs1medium

Microbial fuel cells are considered a source of sustainable energy. Why?

  1. 1.They use living organisms as catalysts to generate electricity from certain substrates.
  2. 2.They use a variety of inorganic materials as substrates.
  3. 3.They can be installed in waste water treatment plants to cleanse water and produce electricity.

Which of the Statements given above is/are correct?

  1. A.1 only
  2. B.2 and 3 only
  3. C.1 and 3 only
  4. D.1, 2 and 3
▶ Answer & Explanation

Correct answer: C. 1 and 3 only

Microbial fuel cells (MFCs) harness the metabolic processes of microorganisms to convert organic matter into electrical energy. These microbes act as biocatalysts, breaking down substrates and releasing electrons. A significant advantage of MFCs is their dual function in wastewater treatment, where they can simultaneously purify water by degrading pollutants and generate electricity, aligning with principles of sustainable energy and resource recovery.

Source: UPSC gs1 2011

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