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- Title
Dual augmentation for aerobic bioremediation of MTBE and TCE pollution in heavy metal-contaminated soil.
- Authors
Fernandes, V. C.; Albergaria, J. T.; Oliva-Teles, T.; Delerue-Matos, C.; De Marco, P.
- Abstract
In this work we isolated from soil and characterized several bacterial strains capable of either resisting high concentrations of heavy metals (Cd2+ or Hg2+ or Pb2+) or degrading the common soil and groundwater pollutants MTBE (methyl-tertbutyl ether) or TCE (trichloroethylene). We then used soil microcosms exposed to MTBE (50 mg/l) or TCE (50 mg/l) in the presence of one heavy metal (Cd 10 ppm or Hg 5 ppm or Pb 50 or 100 ppm) and two bacterial isolates at a time, a degrader plus a metalresistant strain. Some of these two-membered consortia showed degradation efficiencies well higher (49-182% higher) than those expected under the conditions employed, demonstrating the occurrence of a synergetic relationship between the strains used. Our results show the efficacy of the dual augmentation strategy for MTBE and TCE bioremediation in the presence of heavy metals.
- Subjects
TRICHLOROETHYLENE; BIOREMEDIATION; BUTYL methyl ether; HEAVY metals; MICROCOSM &; macrocosm; SYNERGETICS
- Publication
Biodegradation, 2009, Vol 20, Issue 3, p375
- ISSN
0923-9820
- Publication type
Article
- DOI
10.1007/s10532-008-9228-9