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Aerobic MTBE biodegradation in the presence of BTEX by two consortia under batch and semi-batch conditions

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Title: Aerobic MTBE biodegradation in the presence of BTEX by two consortia under batch and semi-batch conditions


1
Aerobic MTBE biodegradation in the presence of
BTEX by two consortia under batch and semi-batch
conditions
M. Raynal A. Pruden
Biodegradation
Pre-publication online ISSN 1572-9729
2008
2
Introduction
  • MTBE has been widely used as a fuel
    oxygenate
  • Widespread environmental contamination
  • Health Risks

3
  • Aerobic biodegradation
  • Rubrivivax gelatinosus strain PM1
  • Purpose of this study

Rhodococcus sp., Mycobacterium austroafricanum,
Rubrivivax gelatinosus strain PM1,
Hydrogenophaga sp.
4
Materials Methods
  • Batch Reactors

5
  • Semi-batch reactor
  • MTBE BTEX monitoring

6
  • Microbial community analysis
  • TaqMan Q-PCR for PM 1 quantification

7
Results and Discussion
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Implications for Bioremediation
  • Initial microbial consortium is important
  • MTBE degradation in the presence of BTEX is
    possible
  • Useful for pump and treat techniques

14
References
Afghan, B.K. and Alfred S.Y. Chau. 1989. Analysis
of Trace Organics in the Aquatic Environment.
CRC Press. Chen, Dongzhi, Jianmeng Chen, Weihong
Zhong, Zhuowei Cheng. 2007. Degradation of methyl
tert-butyl ether by gel immobilized Methylibium
petroleiphilum PM1. Bioresource Technology.
Doi10.1016/j.biortech.2007.09.075 Deeb, Rula A.,
Kate M. Scow, and Lisa Alvarez-Cohen. 2000.
Aerobic MTBE biodegradation an examination of
past studies, current challenges, and future
research directions. Biodegradation. 11
171-186. Hristova, Krassimira R., Christian M.
Lutenegger, and Kate M. Scow. 2001. Detection and
quantification of methyl tert-butyl
ether-degrading strain PM1 by real- time TaqMan
PCR. Applied and Environmental Microbiology. 67
5154-5160. Sedran, Marie A., Amy Pruden, Gregory
J. Wilson, Makram T. Suidan, and Albert D.
Venosa. 2002. Effect of BTEX on degradation of
MTBE and TBA by mixed bacterial consortium.
Journal of Environmental Engineering. 128
830-835. Stocking, Andrew J., Rula A Deeb, Amparo
E. Flores, William Stringfellow, Jeffrey Talley,
Richard Brownell, and Michael C. Kavanaugh.
2000. Bioremediation of MTBE a review from a
practical perspective. Biodegradation. 11
187-201. Suidan, M.T., M. Esperanza, M. Zein, P.
McCauley, R.C. Brenner, and A.D. Venosa. 2005.
Challenges in biodegradation of trace organic
contaminants gasoline oxygenates and sex
hormones. Water Environment Research. 77 4-11.
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