Water, Air, and Soil Pollution

, Volume 192, Issue 1, pp 165–172

Benzene Biodegradation under Anaerobic Conditions Coupled with Metal Oxides Reduction

  • Wilverth R. Villatoro-Monzón
  • Marcia G. Morales-Ibarria
  • Elia K. Velázquez
  • Hugo Ramírez-Saad
  • Elías Razo-Flores
Article

DOI: 10.1007/s11270-008-9643-x

Cite this article as:
Villatoro-Monzón, W.R., Morales-Ibarria, M.G., Velázquez, E.K. et al. Water Air Soil Pollut (2008) 192: 165. doi:10.1007/s11270-008-9643-x

Abstract

Anaerobic benzene biodegradation was performed in batch experiments using Rhine River sediment as inoculum and amorphous Mn(IV) or Fe(III) as independent final electron acceptors. Benzene (4.5 μmol) was degraded in 80 and 710 days in batch experiments under Mn(IV) and Fe(III) reducing conditions, respectively. Highest benzene degradation rate, 0.07 μmol/day, was obtained under Mn (IV) reducing conditions, with soluble Mn(II) and CO2 recoveries of 71.5% and 93% regarding to the stoichiometric values, respectively. Likewise, benzene biodegradation was performed in a continuous column coupled to the reduction of Mn(IV). Efficiency of benzene biodegradation was up to 97% under steady state operation in a sediment column operated continuously for more than 160 days. The carbon dioxide and Mn(II) recoveries were 88% and 77%, respectively, of the theoretical ratio according to the stoichiometry for benzene biodegradation.

Keywords

Aromatic compoundsBenzene degradationIron(III)Manganese(IV)ReductionSedimentColumn

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Wilverth R. Villatoro-Monzón
    • 1
  • Marcia G. Morales-Ibarria
    • 2
  • Elia K. Velázquez
    • 1
  • Hugo Ramírez-Saad
    • 3
  • Elías Razo-Flores
    • 4
  1. 1.Coordinación de Bioprocesos Ambientales, Instituto de IngenieríaUniversidad Nacional Autónoma de MéxicoCiudad Universitaria, México D.F.México
  2. 2.Departamento Procesos y TecnologíaUniversidad Autónoma Metropolitana – CuajimalpaMéxico D.F.México
  3. 3.Departamento de Sistemas BiológicosUniversidad Autónoma Metropolitana – XochimilcoMéxico D.F.México
  4. 4.División de Ciencias AmbientalesInstituto Potosino de Investigación Científica y TecnológicaSan Luis PotosíMéxico