Kinetics of carbendazim degradation in a horizontal tubular biofilm reactor.
Bioprocess Biosyst Eng
; 40(4): 519-528, 2017 Apr.
Article
en En
| MEDLINE
| ID: mdl-28005180
ABSTRACT
The fungicide carbendazim is an ecotoxic agent affecting aquatic biota. Due to its suspected hormone-disrupting effects, it is considered a "priority hazard substance" by the Water Framework Directive of the European Commission, and its degradation is of major concern. In this work, a horizontal tubular biofilm reactor (HTBR) operating in plug-flow regime was used to study the kinetics of carbendazim removal by an acclimated microbial consortium. The reactor was operated in steady state continuous culture at eight different carbendazim loading rates. The concentrations of the fungicide were determined at several distances of the HTBR. At the loading rates tested, the highest instantaneous removal rates were observed in the first section of the tubular biofilm reactor. No evidence of inhibition of the catabolic activity of the microbial community was found. Strains of the genera Flectobacillus, Klebsiella, Stenotrophomonas, and Flavobacterium were identified in the biofilm; the last three degrade carbendazim in axenic culture.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Bacterias
/
Bencimidazoles
/
Carbamatos
/
Reactores Biológicos
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Consorcios Microbianos
/
Membranas Artificiales
Idioma:
En
Revista:
Bioprocess Biosyst Eng
Asunto de la revista:
BIOTECNOLOGIA
/
ENGENHARIA BIOMEDICA
Año:
2017
Tipo del documento:
Article
País de afiliación:
México