TBA Biodegradation in Surface-Water Sediments under Aerobic and Anaerobic Conditions

The potential for [U-14C] TBA biodegradation was examined in laboratory microcosms under a range of terminal electron accepting conditions. TBA mineralization to CO2 was substantial in surface-water sediments under oxic, denitrifying, or Mn(IV)-reducing conditions and statistically significant but l...

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Bibliographic Details
Published in:Environmental science & technology 2002-10, Vol.36 (19), p.4087-4090
Main Authors: Bradley, Paul M, Landmeyer, James E, Chapelle, Francis H
Format: Article
Language:English
Subjects:
Applied sciences
Bacteria, Aerobic - physiology
Bacteria, Anaerobic - physiology
Biodegradable materials
Biodegradation
Biodegradation, Environmental
Biological and physicochemical properties of pollutants. Interaction in the soil
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Exact sciences and technology
Fuels
Geologic Sediments - chemistry
Geologic Sediments - microbiology
Pollution
Pollution, environment geology
Sediments
Soil and sediments pollution
tert-butyl alcohol
tert-Butyl Alcohol - metabolism
Water Pollutants - metabolism
Water pollution
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Summary:The potential for [U-14C] TBA biodegradation was examined in laboratory microcosms under a range of terminal electron accepting conditions. TBA mineralization to CO2 was substantial in surface-water sediments under oxic, denitrifying, or Mn(IV)-reducing conditions and statistically significant but low under SO4-reducing conditions. Thus, anaerobic TBA biodegradation may be a significant natural attenuation mechanism for TBA in the environment, and stimulation of in situ TBA bioremediation by addition of suitable terminal electron acceptors may be feasible. No degradation of [U-14C] TBA was observed under methanogenic or Fe(III)-reducing conditions.
ISSN:0013-936X
1520-5851
DOI:10.1021/es011480c