6. Bio stimulation

A bioremediation method called biostimulation increases the activity of already-existing microorganisms in a contaminated environment to break down contaminants. In order to speed up biodegradation, the environment is altered by introducing nutrients, electron acceptors, or other substrates to encourage the current microbial community. 

Biostimulation aims to boost the metabolic processes of naturally occurring microorganisms, such as bacteria, that can break down pollutants. 

By adding substances such as: Nutrients (e.g., N, P, trace minerals) ,Electron acceptors (e.g., oxygen, nitrate) ,Moisture or pH adjustments,the microbial metabolism is enhanced, leading to faster and more complete degradation of contaminants.

Examples of Biostimulation Applications:

  • Oil spill cleanups: Adding fertilizers to stimulate hydrocarbon-degrading bacteria.

  • Groundwater remediation: Injecting nutrients to promote microbial reduction of chlorinated solvents.

  • Soil remediation: Adjusting pH and nutrient levels to aid biodegradation of organic pollutants.