Chlorinated pesticides (2,4-D and DDT) biodegradation at high concentrations using immobilized Pseudomonas fluorescens.
J Environ Sci Health B
; 40(4): 571-83, 2005.
Article
em En
| MEDLINE
| ID: mdl-16047880
Degradation of two chlorinated pesticides (2,4-D and DDT) using a 54-mL glass column packed with tezontle (a low-cost basaltic scoria) was tested. Bacteria were cultured in YPG (yeast, peptone, and glucose) liquid medium at 32 degrees C. The rich medium was pumped during 24 h through the column to inoculate it. Later, the wasted medium was discharged and the pesticide added. Optical densities, TOC, and pesticide concentration were determined. Pesticide removals for 2,4-D (with initial concentration between 100 and 500 mg/L) were about 99%. DDT removal (at initial concentration of up to 150 mg/L) was as high as 55-99%. TOC removals for 2,4-D was in the 36-87% interval, whereas for DDT they were as high as 36-78%.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Praguicidas
/
Pseudomonas fluorescens
/
DDT
/
Ácido 2,4-Diclorofenoxiacético
/
Herbicidas
Idioma:
En
Revista:
J Environ Sci Health B
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Reino Unido