Enhanced Biodegradation of 2,3,4,5,6-pentachlorocyclohexan-1-ol -- a b-HCH Metabolite -- in the Presence of a and g-HCH Isomers by Pseudomonas aeruginosa ITRC-5

	Clean Technology 2009 Chapter 7: Water, Waste and Remediation
	Enhanced Biodegradation of 2,3,4,5,6-pentachlorocyclohexan-1-ol -- a b-HCH Metabolite -- in the Presence of a and g-HCH Isomers by Pseudomonas aeruginosa ITRC-5
Authors:	A. Singh, A. Kumar, K. Misra
Affilation:	Rice University, US
Pages:	290 - 293
Keywords:	pseudomonas aeruginosa ITRC-5, b-Hexachlorocyclohexane, 2; 3; 4; 5; 6-pentachlorocyclohexan-1-ol, biodegradation
Abstract:	Chlorinated insecticide hexachlorocyclohexane (HCH), which is still used in many countries in agriculture and forestry, leads to environmental problems. HCH consists of a mixture of four isomers: a-, b-, g-, and d. Efforts have been made for the remediation of soils and groundwater contaminated with the toxic and persistent HCH isomers through biodegradation processes. A bacterium pseudomonas aeruginosa ITRC-5 degrades not only a-, g-, and d- HCH isomers of but also b-HCH which is the most recalcitrant due to its chemical stability. The degradation of b-isomer is accompanied with the formation of a metabolite 2,3,4,5,6-pentachlorocyclohexan-1-ol (PCCOL). In the present study, effectiveness of ITRC-5 strain in further degradation of PCCOL was evaluated. g-HCH grown ITRC-5 cells show higher degradation of PCCOL than the t-HCH grown cells do. Furthermore, degradation of PCCOL by g-HCH grown cells is enhanced in the presence of a- or g-HCH isomers. Cloned genes of ITRC-5 bacterium showed 50% degradation of PCCOL in 16 hrs. The ITRC-5, therefore, demonstrates potential for the bioremediation of b-HCH and PCCOL.
ISBN:	978-1-4398-1787-2
Pages:	412
Order:	Online/Mail/Fax Ordering Options
Indexes:	Keywords, Authors, Affiliations
Up

Join Us

Featured Events

ARPA-E Energy Innovation Summit
Washington DC, Feb. 27-29, 2012

Cleantech 2012
(joint with TechConnect World)
Santa Clara CA, June 19-21, 2012

"We've very much enjoyed being a member of CTSI. In addition to the many networking and conference opportunities, we've found the monthly newsletters to be the best consolidated source of clean technology industry information and updates on policy, grants and market intelligence."

- Patrick J. Piper, QM Power, Inc.

"Ener-G-Rotors is pleased to be a member of CTSI. CTSI has been very supportive of our efforts in clean technology, helping to connect us with key legislators, introducing us to contacts at the DOE, and providing opportunities to network with other clean technology companies."

- Michael Newell, Ener-G-Rotors, Inc.

"The Clean Technology and Sustainable Industries Organization brings together the world's most innovative companies to provide critical thinking and technology solutions to real-world challenges."

- Dr. Ray O Johnson, Senior Vice President and Chief Technology Officer, Lockheed Martin

Clean Technology 2009

Chapter 7: Water, Waste and Remediation

Enhanced Biodegradation of 2,3,4,5,6-pentachlorocyclohexan-1-ol -- a b-HCH Metabolite -- in the Presence of a and g-HCH Isomers by Pseudomonas aeruginosa ITRC-5