Before revision: ] ] ] ] ] Additives are usually added to the subsurface through injection wells, although injection well technology for biostimulation purposes is still emerging.
After revision: Alternatively, remediation ofhalogenatedcontaminants inanaerobicenvironments may be stimulated by addingelectron donors(organic substrates), thus allowingindigenous microorganismsto use the halogenated contaminants aselectron acceptors.EPA Anaerobic Bioremediation Technologies] ] ] ] ] Additives are usually added to the subsurface through injection wells, although injection well technology for biostimulation purposes is still emerging.