Biodegradation kinetics of BTE-OX and MTBE by a diesel-grown biomass.
Water Sci Technol
; 53(11): 197-204, 2006.
Article
en En
| MEDLINE
| ID: mdl-16862790
The biodegradation kinetics of BTE-oX and MTBE, mixed all together in the presence of diesel-grown bioaugmented bacterial populations as high as 885 mg/L VSS, was evaluated. The effect of soil in aqueous samples and the effect of Tergitol NP-10 on substrate biodegradation rates were also evaluated. Biodegradation kinetics was evaluated for 54 h, every 6 h. All BTE-oX chemicals followed a first-order two-phase biodegradation kinetic model, whereas MTBE followed a zero-order removal kinetic model in all samples. BTE-oX removal rates were much higher than those of MTBE in all samples. The presence of soil in aqueous samples retarded BTE-oX and MTBE removal rates. The addition of Tergitol NP-10 to aqueous samples containing soil had a positive effect on substrate removal rate in all samples. Substrate percent removals ranged between 64.8-98.9% for benzene, toluene and ethylbenzene. O-xylene and MTBE percent removals ranged between 18.7-40.8% and 7.2-10.3%, respectively.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Tolueno
/
Xilenos
/
Benceno
/
Derivados del Benceno
/
Biodegradación Ambiental
/
Gasolina
/
Purificación del Agua
/
Éteres Metílicos
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Water Sci Technol
Asunto de la revista:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Año:
2006
Tipo del documento:
Article
País de afiliación:
México
Pais de publicación:
Reino Unido