Effect of Electron Acceptor on Anaerobic Toluene Biodegradation in Rice Field and Tidal Mud Flat

논과 갯벌에서 톨루엔의 혐기성 생분해에 미치는 전자수용체의 영향

  • Published : 2003.06.01

Abstract

In oil-contaminated environments, anaerobic biodegradation of toluene depended on the concentration and distribution of terminal electron acceptor as well as the physicochemical properties such as DO concentration, redox potential and pH. This study showed the anaerobic biodegradation of toluene in two different soils by using nitrate reduction, ferric iron reduction, sulfate reduction and methanogensis. Toluene degradation rates in the soil samples taken from rice filed and tidal mud flat by nitrate reduction were higher than those by other processes. Tho soil samples from the two fields were enriched for 130 days by providing toluene as a sole carbon source and nitrate or sulfate as a terminal electron acceptor. The toluene degradation rates in the enriched denitrifying consortia obtained from the rice field and tidal mud flat soil were 310.7 and 200.6 $\mu$mol$ L^{-1}$ / $d^{-1}$, respectively. The toluene (legradation rates in the enriched sulfate-reducing consortia from the fields ranged fi-om 149.1 to 86.1$\mu$mol $L^{-1}$ / $d^{-1}$ .

References

  1. Intl. Syst. Bactereiol. v.49 Geothrix fermentans gen. nov., sp. nov., a novel Fe(III)-reducing bacterium from a hydrocarbon-contaminated squifer Coates,J.D.;D.J.Ellis;D.V.Gaw;D.R.Lovley
  2. Appl. Environ. Microbiol. v.64 Anaerobic benzene degradation in petroleum-contaminated aquifer sediments after inoculation with a benzene-oxidizing enrichment Weiner,J.M.;D.R.Lovley
  3. Appl. Environ. Microbiol. v.62 Isolation and characterization of a novel toluene-degrading, sulfate-reducing bacterium Beller,H.R.;A.M.Spormann;P.K.Sharma;J.R.Cole;M.Reinhard
  4. Arch. Microbiol. v.178 Phylogenetic and metabolic diversity of bacteria degrading aromatic compounds under denitrifying conditions, and description of Thauera phenylacetica sp. nov., Thauera aminoaromatica sp. nov., and Azoarcus buckelii sp. nov. Mechichi,T.;E.Stackerbrandt;N.Gad'on;G.Fuchs
  5. Intl. Syst. Bactereiol. v.45 Phylogenetic analysis of a new group of denitrifiers capable of an aerobic growth on toluene and description of Azoarcus toluyticus sp. nov. Zhou,J.;M.R.Fries;J.C.Chee-Sanford;J.M.Tiedje
  6. J. Hazardous Mat. v.45 Anaerobic biodegradation of toluene under denitrifying conditions in contaminated groundwater and soil Mester,K.G;D.S.Kosson
  7. Org. Geochem. v.25 Biodegradation of aromatic hydrocarbons under anoxic conditions in a shallow sand and gravel aquifer of the Lower Rhine Valley, Germany Schmitt,R.;H.R.Langguth;W.Puttmann;H.P.Rohns;P.Eckert;J.Schubert
  8. Appl. Environ. Microbiol. v.65 Microbial communities associated with anaerobic benzene degradation in a petroleum-contaminated aquifer Rooney-Varge,J.N.;R.T.Anderson;J.L.Fraga;D.Ringelberg;D.R.Lovley
  9. Biomed. Environ. Sci. v.15 Microbial aspects of anaerobic TEX degradation Bin,L.;H.W.Van Verseveld;W.F.W.Rling
  10. Appl. Environ. Microbiol. v.58 Microbial degradation of toluene under sulfate-reducing conditions and the influence of iron on the process Beller,H.R.;D.Grbic-Galic;M.Reinhard
  11. Environ. Sci. Technol. v.35 Enhanced in situ bioremediation of BTEX-contaminated groundwater by combined injection of nitrate and sulfate Cunningham,J.;H.Rahme;G.D.Hopkims;C.Lebron;M.Reinhard