TY - JOUR
T1 - Kinetics of carbendazim degradation in a horizontal tubular biofilm reactor
AU - Alvarado-Gutiérrez, María Luisa
AU - Ruiz-Ordaz, Nora
AU - Galíndez-Mayer, Juvencio
AU - Santoyo-Tepole, Fortunata
AU - Curiel-Quesada, Everardo
AU - García-Mena, Jaime
AU - Ahuatzi-Chacón, Deifilia
N1 - Publisher Copyright:
© 2016, Springer-Verlag Berlin Heidelberg.
PY - 2017/4
Y1 - 2017/4
N2 - 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.
AB - 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.
KW - Biofilm
KW - Carbendazim
KW - Reaction kinetics
KW - Tubular bioreactor
UR - http://www.scopus.com/inward/record.url?scp=85007005495&partnerID=8YFLogxK
U2 - 10.1007/s00449-016-1717-3
DO - 10.1007/s00449-016-1717-3
M3 - Artículo
C2 - 28005180
SN - 1615-7591
VL - 40
SP - 519
EP - 528
JO - Bioprocess and Biosystems Engineering
JF - Bioprocess and Biosystems Engineering
IS - 4
ER -