Biodegradation of methyl tert-butyl ether as a sole carbon source by aerobic granules cultivated in a sequencing batch reactor

Bioprocess and Biosystems Engineering
Li-Li ZhangW M Cai

Abstract

Aerobic granules efficient at degrading methyl tert-butyl ether (MTBE) were successfully developed in a well-mixed sequencing batch reactor (SBR). Treatment efficiency of MTBE in the reactor during the stable operations exceeded 99.8%, and effluent MTBE was consistently below 800 microg/L. The specific MTBE degradation rate was observed to increase with increasing MTBE initial concentrations from 25 to 400 mg/L, peaked at 18.2 mg-MTBE/g-VSS h, and declined with further increases in MTBE concentration as substrate inhibition effects became significant. There was a good fit between these biodegradation data and the Haldane equation (R (2) = 0.976). Microbial community DNA profiling was carried out using denaturing gradient gel electrophoresis (DGGE) of polymerase chain reaction amplified 16S rDNA. The aerobic granule was found to contain a wide diversity of microorganisms. More than 70% similarity among the samples in the time period examined indicated a highly stable microbial community as the reactor reached the stable operation.

References

Nov 5, 1999·Applied and Environmental Microbiology·J R HansonK M Scow
May 9, 2001·Applied Microbiology and Biotechnology·P PiveteauF Monot
May 12, 2001·Environmental Science & Technology·R A DeebL Alvarez-Cohen
Jul 27, 2001·Environmental Microbiology·N Y FortinM A Deshusses
Nov 23, 2001·Environmental Science & Technology·A PrudenG J Wilson
Nov 28, 2001·Applied and Environmental Microbiology·P B HatzingerR J Steffan
Feb 6, 2002·Environmental Science & Technology·David DupasquierRichard Auria
Jun 1, 2002·Applied and Environmental Microbiology·Alan FrançoisFrédéric Monot
Aug 9, 2003·Microbiological Research·Benedict C Okeke, William T Frankenberger
Jul 21, 2004·Environmental Science & Technology·Maher M ZeinAlbert D Venosa
Jul 21, 2004·Biotechnology Advances·Yu Liu, Joo-Hwa Tay
Nov 6, 2004·Applied and Environmental Microbiology·He-Long JiangStephen Tiong-Lee Tay
Jan 11, 2005·Journal of Biotechnology·Stephen Tiong-Lee TayJoo-Hwa Tay
Dec 24, 2005·Environmental Technology·L L ZhangW M Cai
Aug 1, 1997·Applied and Environmental Microbiology·L K HardisonM R Hyman
Mar 31, 2006·Environmental Science & Technology·Maher M ZeinAlbert D Venosa
May 2, 2006·Environmental Science & Technology·Shan YiJoo-Hwa Tay
Dec 21, 2006·Biotechnology and Bioengineering·M K de KreukM C M van Loosdrecht

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Citations

Jan 14, 2011·Journal of Hazardous Materials·Ssu Ching ChenWen-Ming Chen

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