Biodegradation Kinetics and Effects of Operating Parameters on the Performance of a Methyl Tert-Butyl Ether Degrading Biofilter
The goals of the study were to determine the effectiveness of a laboratory-scale biofilter on the removal of methyl tert-butyl ether (MTBE) and investigate the operating parameter effects on biofilter performance. The experimental results show that average MTBE removals of 53.6–93.2% were observed at loads of 2.5–20.1 gm−3 h−1 and an empty-bed residence time of three minutes, after continuous operation for four months throughout the biofilter acclimation period. After a one-day recovery period operation, the biofilter system recovered from the introduction of a shock load. More than 99% removal efficiencies were achieved for the inlet MTBE concentration at 50 ppmv and with the highest residence time. MTBE removals at the bottom section of the biofilter were consistently lower than for the top section, which was attributed to insufficient microorganism growth in the bottom section. The parameters estimated by using the Michaelis-Menten equation were 1.116 ± 0.51 ppmv s−1 for the maximum removal rate (Vm), and 26.38 ± 17.21 ppmv for the half-saturation constant (Ks), evaluated at the biofilter exit.
Keywordsbiodegradation biofilter kinetics methyl tert-butyl ether removal efficiency start-up microbial acclimation
Unable to display preview. Download preview PDF.
- Bohn, H. (1992). Consider Biofiltration for Decontaminating Gases. Chem. Engin. Prog. 65, 34–40.Google Scholar
- Devinny, J.S., Deshusses, M.A. and Webster, T.S. (1998). Biofiltration for Air Pollution Control, Lewis Publishers, CRC Press, pp. 320.Google Scholar
- Eweis, J., Chang, D.P., Schroeder, E.D. Scow, K.M., Morton R.L. and Caballero R.C. (1997). Meeting the Challenge of MTBE Biodegradation. Proceedings of the 90th Annual Meeting and Exhibition of the Air and Waste Management Association, Toronto, Canada, June 8-13, Paper 97-RA133.06.Google Scholar
- Gribbins, M.J. and Loehr, R.C. (1998). Effect of Media Nitrogen Concentration on Biofilter Performance. J. Air Wast. Manag. Assoc. 48, 216–226.Google Scholar
- Kennes, C. and Veiga, M.C. (2001). Bioreactors for Waste Gas Treatment, Kluwer Academic Publishers, Dordrecht, pp. 320.Google Scholar
- Leson, G. and Winer, A.M. (1991). Biofiltration: an Innovative Air Pollution Control Technology for VOC Emissions. J. Air Wast. Manag. Assoc. 41, 1045–1054.Google Scholar
- Lin, C.W. and Li, J.H. (2005). Performance of a Biofilter on MTBE Removal. J. Sci. Engin. Technol. 2, 16– 25.Google Scholar
- Steffan, R.J., McClay, K., Vainberg, S., Condee, C.W. and Zhang, D. (1997). Biodegradation of the Gasoline Oxygenates Methyl Tert-Butyl Ether, Ethyl Tert-Butyl Ether, and Tert-Amyl Methyl Ether by Propane-Oxidizing Bacteria. Appl. Environ. Microbiol. 63, 4216–4222.Google Scholar
- United States Environmental Protection Agency. (1997). Drinking Water Advisory: Consumer Acceptability Advice and Health Effects Analysis on Methyl Tertiary Butyl Ether (MtBE), EPA-822-F-97-009, USA.Google Scholar
- Yang, Y. and Allen, E.R. (1994). Biofiltration Control of Hydrogen Sulfide 1: Design and Operational Parameters. J. Air Wast. Manag. Assoc. 47, 37–48.Google Scholar