Which of the following is NOT an ex-situ bioremediation tool?

Correct option is C

Explanation:
· Ex-situ bioremediation involves the removal of contaminated material (soil or water) to be treated elsewhere.
· Bioventing is an in-situ technique where air or oxygen is pumped into the soil to stimulate the activity of indigenous microorganisms to degrade contaminants.
Information Booster:
· Ex-situ tools:
· Bioreactors: Contaminated material is treated inside controlled tanks or vessels.
· Biofilters: Contaminated gases or air are passed through microbial media to degrade pollutants.
· Land farming: Contaminated soil is excavated and spread over a treatment bed for microbial degradation.
· In-situ tool:
· Bioventing: Air is injected into the soil without excavation.