Bioaugmentation involves:
Bioaugmentation deliberately introduces selected allochthonous or enriched autochthonous microorganisms with laboratory-verified superior degradative capabilities to contaminated sites where native community density or catabolic potential insufficient to achieve remediation goals within regulatory timeframe. Pure cultures or consortia such as Alcanivorax borkumensis specialized for branched alkanes, Dehalococcoides mccartyi containing tceA, bvcA and vcrA reductive dehalogenase genes for complete detoxification of tetrachloroethene to ethene, and genetically engineered strains expressing broad-
Ref: Hosokawa et al. Journal Hazardous Materials 2009 Bioaugmentation strategies; NCERT Environmental Biotechnology bioaugmentation; EPA guide.