Producción Científica Profesorado

Toward a standardization of the microbial inoculum for ready biodegradability testing of chemicals



Vázquez Rodríguez, Gabriela Alejandra

2000

Vázquez Rodríguez G., Goma G. and Rols J.-L. (2000) Toward a standardization of the microbial inoculum for ready biodegradability testing of chemicals. Water Science and Technology 42 (5-6): 43-46.


Abstract


Activated sludge constitutes a widely used inoculum source in biodegradability tests, due principally to its microbial diversity and ubiquity. In ready biodegradability tests, the composition and the quantity of this type of inoculum are the major factors which affect the reproducibility of results. Experiments with dodecylbenzene sulfonate were carried out to evaluate the impact of the non-controlled inoculum on test response. At low inoculation levels, cellular growth and soluble residual carbon accumulation were favoured and low mineralization levels were obtained. A procedure for inoculum preparation was proposed: it consists in a pre-treatment of activated sludge, collected in different municipal wastewater treatment plants, by centrifugation (500 g for 4 minutes) which enabled the supernatant cellular density (CFU concentration) to be more uniform than with the conventional decantation procedure (30 min).



Producto de Investigación




Artículos relacionados

Inocula from activated sludge for ready biodegradability testing: Homogenization by preconditioning

MODELACIÓN MATEMÁTICA DE LA CINÉTICA DE CATALIZADORES PARA LA PRODUCCION DE DIESEL DE ULTRA BAJO AZU...

Mathematical modeling of diffusion regulated Quorum sensing in Artificially Structured Microbial Con...

A method for measuring the anoxic biodegradability under denitrifying conditions

Model-based design of different fedbatch strategies for phenol degradation in acclimatized activated...

Manganese accumulation in plants of the mining zone of Hidalgo, Mexico

Degradación física del almidón de cebada (Hordeum sativun Jess). Correlación entre la gelatinización...

Two-step modeling of the biodegradation of phenol by an acclimated activated sludge

DISEÑO DE UNA PLANTA DE TRATAMIENTO DE AGUAS RESIDUALES BASADO EN EL PRINCIPIO DE CONSORCIOS MICROBI...

ANÁLISIS DE LAS ESTRATEGIAS DE CONTROL DE LA SECCIÓN DE DESPROPANIZACIÓN EN LA PLANTA PETROQUÍMICA J...