Toxicity of biodiesel, diesel and biodiesel/diesel blends: comparative sub-lethal effects of water-soluble fractions to microalgae species.
Bull Environ Contam Toxicol
; 88(2): 234-8, 2012 Feb.
Article
en En
| MEDLINE
| ID: mdl-22120696
The water-soluble-fractions (WSF) from biodiesel and biodiesel/diesel blends were compared to diesel in their sub-lethal toxicity to microalgae. Chemical analyses of aromatics, non-aromatics hydrocarbons and methanol were carried out in the WSF, the former showing positive correlation with increasing diesel concentrations (B100 < B5 < B3 < B2 < D). Biodiesel interacted with the aqueous matrix, generating methanol, which showed lower toxicity than the diesel contaminants in blends. The WSF caused 50% culture growth inhibition (IC50-96 h) at concentrations varying from 2.3 to 85.6%, depending on the tested fuels and species. However, the same species sensitivity trend (S. costatum > N. oculata > T. chuii > P. subcapitata) was observed for all the tested fuels.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Contaminantes Químicos del Agua
/
Gasolina
/
Biocombustibles
/
Microalgas
Tipo de estudio:
Etiology_studies
/
Risk_factors_studies
Idioma:
En
Revista:
Bull Environ Contam Toxicol
Año:
2012
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Estados Unidos