Encontrados 16 documentos, a visualizar página 1 de 2

Biodegradation of diethylketone by Penicillium sp. and Alternaria sp.: a compar...

Two contaminating fungi were isolated from a bioreactor containing diethylketone and Streptococcus equisimilis, subsequently characterized at molecular level and identified as belonging to the Alternaria and Penicillium genera. The ability of these fungi to biodegrade DEK is evaluated. The kinetic parameters are estimated using four growth kinetic models for biodegradation of organic compounds available in lite...

Study of 16 Portuguese activated sludge systems based on filamentous bacteria p...

A survey in 16 activated sludge waste water treatment plants (WWTP) was conducted to contribute to the knowledge of the environmental parameters that determine the composition of the filamentous community. A total of 128 samples of mixed liquor from municipal WWTP were collected during 2 years, and 22 filamentous morphotypes were identified. The most frequent and abundant filamentous bacteria were, in both case...

Tracking relations among bacterial and protozoan communities in wastewater trea...

Background: Understanding the interactions between prokaryotic and eukaryotic populations in complex environments can be challenging. Particularly, there is a recognized difficulty in establishing how the interactions between the bacterial and the protozoan populations can affect the performance of wastewater treatment plants (WWTP). Objectives: In order to determine the relationships between microbial communit...

PROTOFILWW: two year-sampling of protozoa, little metazoa and filamentous bacte...

Activated-sludge represents a component of the largest biotechnology in the world: wastewater treatment. Yet it differs substantially from the large-scale production of economically important metabolites or biomass: for decades, the aerating tanks of the wastewater treatment plants (WWTP) have remained black boxes, its complexity discouraging most microbiologists. Moreover, studies integrating both the prokaryo...

Biodegradation of diethylketone by two fungi

Two morphologically different fungi (one green and one white) from contaminated bioreactors with an aqueous solution of diethylketone and Streptococcus equisimilis were isolated and characterized at molecular level by sequencing the amplified ITS region. The ITS region sequence showed 99% match with Alternaria genera for the green fungi and 99% match with the Penicillium genera for the white fungi. The performa...

New insights on the roles of bacteria and protozoa in activated-sludge processes

Wastewater treatment is one of the most important biotechnological processes in the world. Nevertheless, the highly complex microbial communities in wastewater treatment plants (WWTP) are barely understood, remaining, most of the time, as a “black box”. Even though many microbiological methods are available to study the activated-sludge communities, many recent questions on the role of a significant number of m...

Characterization of the filamentous bacteria Eikelboom Type 0581 in Portuguese ...

Protozoa grazing evaluation : a novel way to assess wastewater treatment perfor...

Protozoa grazing evaluation : a novel way to assess wastewater treatment perfor...

Relationships between microfauna, filamentous bacteria and environmental condit...