First evidence of aerobic biodegradation of BTEX compounds by pure cultures of Marinobacter.
Marinobacter vinifirmus was shown to degrade toluene as sole carbon and energy source under aerobiosis and at NaCl concentrations in the range 30-150 g/L. Maximum toluene consumption rate, total CO2, and biomass productions were measured in the presence of 60 g/L of NaCl. Under these conditions, 90% of the carbon from toluene was recovered as CO2 and biomass. Maximum specific toluene consumption rate was about 0.12 mgC toluene mgC biomass(-1) h(-1) at NaCl concentrations between 30 and 60 g/L. It decreased to 0.03 mgC toluene mgC biomass(-1) h(-1) at 150 g/L. Besides toluene, M. vinifirmus degraded benzene, ethylbenzene, and p-xylene. Benzene and toluene were utilized to a lesser extent by another Marinobacter sp., Marinobacter hydrocarbonoclasticus.
Berlendis
Sabrina
S
Laboratoire IRD-UMR D 180, Universités de Provence et de la Méditerranée, ESIL, Case 925, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France.
Cayol
Jean-Luc
JL
Verhé
Frédéric
F
Laveau
Sophie
S
Tholozan
Jean-Luc
JL
Ollivier
Bernard
B
Auria
Richard
R
D001420:Bacteria, Aerobic / Q000737:chemistry / Q000378:metabolism; D001554:Benzene / Q000378:metabolism*; D001555:Benzene Derivatives / Q000378:metabolism*; D018533:Biomass; D002245:Carbon Dioxide / Q000378:metabolism; D053520:Marinobacter / Q000737:chemistry / Q000378:metabolism*; D012965:Sodium Chloride / Q000737:chemistry; D046509:Tissue Culture Techniques; D014050:Toluene / Q000378:metabolism*; D014992:Xylenes / Q000378:metabolism*
D001555:Benzene Derivatives; D014992:Xylenes; D002245:Carbon Dioxide; D014050:Toluene; D012965:Sodium Chloride; D001554:Benzene; C004912:ethylbenzene