4 documents found, page 1 of 1
Survival of clinical and environmental carbapenem-resistant Klebsiella pneumoni...
Ferreira, Catarina; Luzietti, Lara; Ribeirinho-Soares, Sara; Nunes, Olga C.; Vaz-Moreira, Ivone; Manaia, Célia M.Carbapenem-resistant Klebsiella pneumoniae represents a healthcare threat, already disseminated in the environment. This study aimed to compare the behaviour of a clinical and an environmental K. pneumoniae strain (multilocus sequence type ST147) harbouring the gene blaKPC-3 in water. The abundance of the genes phoE (specific for K. pneumoniae) and blaKPC-3 was monitored by quantitative PCR in urban runoff wate...
Performance of polycarbonate, cellulose nitrate and polyethersulfone filtering ...
Abreu-Silva, Joana; Ribeirinho-Soares, Sara; Oliveira-Inocêncio, Inês; Pedrosa, Marta; Silva, Adrián M. T.; Nunes, Olga C.; Manaia, Célia M.Demineralized and disinfected waters may have very low microbial loads, requiring that large volumes of water are filtered to recover enough biomass for further analysis. Extended filtration periods, often interrupted by clogging, are a major limiting factor to concentrate samples' microbiota for further examination, besides hindering the work pace. In this study, we investigated the performance of three types ...
Ozone membrane contactor for tertiary treatment of urban wastewater: Chemical, ...
Presumido, Pedro Henrique; Ribeirinho-Soares, Sara; Montes, Rosa; Quintana, Jose B.; Rodil, Rosário; Ribeiro, Marta; Neuparth, Teresa; Santos, Miguel M.A membrane ozone contactor, operated under continuous mode, was applied to promote the tertiary treatment of urban wastewater (UWW), targeting the removal of contaminants of emerging concern (CECs), bacterial disinfection, and toxicity reduction. This system relies on the homogeneous radial distribution of ozone (O3) in the reaction zone by "titration" through a microfiltration borosilicate tubular membrane, wh...
A pilot study combining ultrafiltration with ozonation for the treatment of sec...
Graça, Cátia A. L.; Ribeirinho-Soares, Sara; Abreu-Silva, Joana; Ramos, Inês I.; Ribeiro, Ana R.; Castro-Silva, Sérgio M.; Segundo, Marcela A.Ozonation followed by ultrafiltration (O3 + UF) was employed at pilot scale for the treatment of secondary urban wastewater, envisaging its safe reuse for crop irrigation. Chemical contaminants of emerging concern (CECs) and priority substances (PSs), microbial load, estrogenic activity, cell viability and cellular metabolic activity were measured before and immediately after O3 + UF treatment. The microbial lo...