Producción Científica Profesorado

Procedures in Ready Biodegradability Testing: Effects of the Inoculation and the Monitored Parameter



Vázquez Rodríguez, Gabriela Alejandra

1999

Vázquez Rodríguez G., Palluy F., Goma G. and Rols J.-L. (1999) Procedures in ready biodegradability testing: effects of the inoculation and the monitored parameter. Environmental Technology 20: 301-308. DOI:10.1080/09593332008616821


Abstract


Ready biodegradability tests are often limited because of a lack of definition in some operating conditions, which can be critical for reproducibility and efficiency. In this paper, the effects of the monitored analytical parameter and the variations in the inoculum quantity on test results are studied. In a Sturm standardized assay, sodium acetate and dodecylbenzene sulfonate (DBS) were tested at several initial substrate to biomass ratios (S0/X0). The analytical parameter did show itself to be determinant in the estimation of the extent of the acetate biodegradation. In DBS assays, imposed S0/X0 ratios did control both lag time and biodegradation level as well as final carbon distribution in cellular, mineralized and residual carbon. Therefore, quantitative measurement of the S0/X0 ratio, or alternatively its setting at a certain value, could enhance the reliability of test results. In order to improve the comparison between different analytical procedures, a low S0/X0 ratio is deemed advantageous. The results of these studies have implications for the methodology used in biodegradation test systems and suggest caution before utilization of a non characterized inoculum possibly leading to erroneous conclusions.



Producto de Investigación




Artículos relacionados

Effect of the inoculation level in aerobic biodegradability tests of polymeric materials

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

Standardization of activated sludge for biodegradation tests

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

A method for measuring the anoxic biodegradability under denitrifying conditions

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

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

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

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

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