Cometabolic biodegradation of 1,2,3-trichloropropane by propane-oxidizing bacteria. Academic Article

abstract

• 1,2,3-Trichloropropane (TCP) is an emerging groundwater pollutant and suspected human carcinogen. TCP, a recalcitrant contaminant, has been detected in the subsurface near TCP manufacture facilities and many superfund sites. Considering the toxicity and the occurence of TCP, there is a need to seek for cost-effective treatment technologies for TCP-contaminated sites. This paper investigated TCP biodegradation by propane-oxidizing bacteria (PrOB) which are known to express propane monooxygenase (PrMO). PrMO can cometabolically degrade many different contaminants. Four PrOB, Rhodococus jostii RHA1, Mycobacterium vaccae JOB5, Rhodococcus rubber ENV425 and one isolate Sphingopyxis sp. AX-A were examined for their ability to degrade TCP. All the four PrOB resting cells were able to degrade TCP. Strain JOB5 exhibited the best TCP degradation ability (vinitial= 9.70.7g TCP (mg protein)-1h-1). No TCP was degraded in the presence of acetylene (an inhibitor for PrMO), suggesting that PrMO might be responsible for TCP degradation. Furthermore, competitive inhibition was observed between propane and TCP, and between trichloroethylene (TCE) and TCP.

authors

• Chu, Kung-Hui (Bella)

published proceedings

• Chemosphere

author list (cited authors)

• Wang, B., & Chu, K.

citation count

• 12

complete list of authors

• Wang, Baixin||Chu, Kung-Hui

publication date

• January 2017

publisher

• Elsevier  Publisher

published in

• Chemosphere  Journal

keywords

• 1,2,3-trichloropropane
• Bacteria
• Biodegradation, Environmental
• Carcinogens
• Cometabolism
• Groundwater
• Humans
• Mixed Function Oxygenases
• Propane
• Propane Monooxygenase
• Propane-oxidizing Bacteria
• Rhodococcus
• Trichloroethylene

Digital Object Identifier (DOI)

• 10.1016/j.chemosphere.2016.12.007

start page

• 1494

end page

• 1497

volume

• 168

URL

• http://dx.doi.org/10.1016/j.chemosphere.2016.12.007