Bioaugmentation is an environmentally friendly practice, which consists of introducing cultured microbes into the subsurface region for microbial degradation of the contaminants present in the soil or water. The basic approach of this method is to increase the rate or extent of degradation of the contaminants or pollutants by introducing those microbes which degrade the pollutants. Bioaugmentation increases the genetic diversity or gene pool of the microbes at the contaminated site.

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Selection of suitable microorganisms

For successful bioaugmentation process, suitable or ideal microbial strains are needed, and selection of the optimal microbial consortia should take into account certain characteristics of microbes, such as the feasibility of culturing microbes, rapid growth, and the ability to survive a wide range of environmental conditions and withstand a large concentration of pollutants, which make bioaugmentation possible. Some other significant approaches are called re-inoculation of soil with the same microbe, in which the bacterial strain is isolated from the contaminated site and prepared for pre-adaptation under laboratory conditions and reintroduced to the same site.

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