An emerging groundwater remediation practice area is cometabolic bioremediation. This approach “has been used on some of the most recalcitrant contaminants, e.g., PCE, TCE, MTBE*, TNT, dioxane, and atrazine. Methanotrophs have been demonstrated to produce methane monooxygenase, an oxidase that can degrade over 300 compounds (see table below). Cometabolic bioremediation also has the advantage of being able to degrade contaminants to trace concentrations, since the biodegrader is not dependent on the contaminant for carbon or energy.” (Hazen 2009) inVentures Technologies’ family of groundwater remediation products based on the worldwide-patented Gas inFusion technology, which allows for supersaturated levels of dissolved gas into liquids, is ideal for many cometabolic bioremediation projects. For assistance with a cometabolic bioremediation project, contact your local Tersus Representative or us today. Contact Tersus Environmental

Cometabolic Bioremediation Substrates, Enzymes, & Contaminants

Cosubstrates

Methane,
Methanol,
Propane,
Propylene
(aerobic)

Ammonia,
Nitrate
(aerobic)

Toluene,
butane,
phenol, citral,
cumin aldehyde,
cumene, and
limonene (aerobic)

Methanol
(anaerobic)

Glucose,
Acetate,
Lactate,
Sulfate,
Pyruvate
(anaerobic)

Enzymes
(microbes)

Methane
Monooxygenase,
Methanol
Dehydrogenase,
Alkene
monooxygenase,
catechol
dioxygenase
(Methylosinus)

Ammonia
Monooxygenase
(Nitrosomonas,
Nitrobacter)

Toluene
Monooxygenase,
Toluene
Dioxygenase
(Rhodococcus,
Pseudomonas,
Arthrobacter)

Alcohol
Dehydrogenases
(Pseudomonas,
Streptomyces,
Corynebacterium)

Dehalogenase,
AtzA,
Dichloromethane
Dehalogenase
(Dehalococcoides,
Methanogens,
Desulfovibrio,
Clostridium,
Geobacter,
Clavibacter)

Contaminants

TCE, DCE, VC,
PAHs, PCBs, MTBE*, creosote, >300 different
compounds

TCE, DCE, VC,
TNT

TCE, DCE, VC,
1,1-DCE, 1,1,1-
TCA

PCE, TCE, DCE, VC,
Hexachlorocyclohexane

BTEX, PCE,
PAHs, Pyrene,
Atrazine, TNT, etc.

 

*US Patent No. 5,814,514