Q. Consider the following statements:

1. Both Bioventing and Biosparging are techniques of Bioremediation
2. Both Bioventing and Biosparging make use of Oxygen to achieve their objective

Which of the above is / are correct?
Answer: Both 1 & 2
Notes: Biomining utilizes biological agents like microbes, fungi, or plants to extract valuable metals from ores through metal chelation. Bioventing employs microbes to degrade organic pollutants, aided by injected oxygen and nutrients. Biosparging also stimulates indigenous microbes to degrade pollutants but injects oxygen into the saturated zone, unlike bioventing, which targets the unsaturated zone.

This question is part of UPSC Daily 20 MCQ Series Course on GKToday Android app.