Antimicrobial Ceramic Filters for Water Bio-Decontamination

• Tipo: Artigo em Revista Científica Internacional
• Data: 2021

Autores

Olga Ferreira (Autor) Outra; Patrícia Rijo (Autor) Outra; João Gomes (Autor) Outra; Ricardo Santos (Autor) Outra; Sílvia Monteiro (Autor) Outra; Rita Guedes (Autor) Outra; Maria Luísa Serralheiro (Autor) Outra; Marisa Gomes (Autor) Outra; Luciana Gomes (Autor) FEUP; Filipe J. Mergulhão (Autor) FEUP; Elisabete R. Silva (Autor) Outra

Revista

Título: Coatings

Vol. 11

Páginas: 1-323

ISSN: 2079-6412

Editora: MDPI

Indexação

ISI Web of Knowledge - 8 Citações

Scopus - 7 Citações

Outras Informações

ID Authenticus: P-00T-K7Q

DOI: 10.3390/coatings11030323

Abstract (EN): Bio-contamination of water through biofouling, which involves the natural colonization of submerged surfaces by waterborne organisms, is a global socio-economic concern, allied to premature materials bio-corrosion and high human health risks. Most effective strategies release toxic and persistent disinfectant compounds into the aquatic medium, causing environmental problems and leading to more stringent legislation regarding their use. To minimize these side effects, a newly non-biocide-release coating strategy suitable for several polymeric matrices, namely polydimethylsiloxane and polyurethane (PU)-based coatings, was used to generate antimicrobial ceramic filters for water bio-decontamination. The best results, in terms of antimicrobial activity and biocide release, showed an expressed delay and a decrease of up to 66% in the population of methicillin-resistant Staphylococcus aureus bacteria on ceramic filters coated with polyurethane (PU)-based coatings containing grafted Econea biocide, and no evidence of biocide release after being submerged for 45 days in water. Biocidal PU-based surfaces were also less prone to Enterococcus faecalis biofilm formation under flow conditions with an average reduction of 60% after 48 h compared to a pristine PU-based surface. Biocidal coated filters show to be a potential eco-friendly alternative for minimizing the environmental risks associated with biofouling formation in water-based industrial systems.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 17