Hydrogeochemistry and Water Chemistry
Intrinsic biodegradation of MTBE and BTEX in a gasoline-contaminated aquifer
Article first published online: 9 JUL 2010
Copyright 1997 by the American Geophysical Union.
Water Resources Research
Volume 33, Issue 5, pages 1105–1115, May 1997
How to Cite
1997), Intrinsic biodegradation of MTBE and BTEX in a gasoline-contaminated aquifer, Water Resour. Res., 33(5), 1105–1115, doi:10.1029/97WR00014., , , and (
- Issue published online: 9 JUL 2010
- Article first published online: 9 JUL 2010
- Manuscript Accepted: 31 DEC 1996
- Manuscript Received: 23 SEP 1996
Three-dimensional field monitoring of a gasoline plume showed rapid decay of toluene and ethylbenzene during downgradient transport with slower decay of xylenes, benzene, and MTBE under mixed aerobic-denitrifying conditions. Decay was most rapid near the source but slower farther downgradient. Effective first-order decay coefficients varied from 0 to 0.0010 d−1 for MTBE, from 0.0006 to 0.0014 d−1 for benzene, from 0.0005 to 0.0063 d−1 for toluene, from 0.0008 to 0.0058 d−1for ethylbenzene, from 0.0012 to 0.0035 d−1 for m-, p-xylene, and from 0.0007 to 0.0017 d−1 for o-xylene. Laboratory microcosm studies confirmed MTBE biodegradation under aerobic conditions; however, the extent of biodegradation was limited.