The role of kaolin particles in the performance of a carbamate-based biocide for water bacterial control

• Tipo: Artigo em Revista Científica Internacional
• Data: 2002

Autores

Maria Olivia Pereira (Autor) Outra; Maria João Vieira (Autor) Outra; Luís F. Melo (Autor) FEUP

Revista

Título: Water Environment Research

Vol. 74 Nº 3

Páginas: 235-241

ISSN: 1061-4303

Editora: Water Environment Federation

Indexação

ISI Web of Knowledge - 8 Citações

ISI Web of Science

Scopus - 9 Citações

COMPENDEX

Outras Informações

ID Authenticus: P-000-PMH

DOI: 10.2175/106143002x139956

Abstract (EN): The influence of kaolin particles on the activity of Pseudomonas fuorescens and on the efficacy of a carbamate-based biocide was investigated. The results indicated that kaolin particles stimulated the activity of the bacteria for all buffered pH values studied (5, 7, and 9); this effect being more evident for the tests carried out at pH 5 and 9. The presence of the clay in P. fuorescens suspensions decreased the efficiency of disinfection of the carbamate. The results also showed that kaolin was very effective in removing carbamate from the culture media. Therefore, the biocide concentration in the solution decreased, and consequently its availability to the bacteria was reduced. The results could be explained by the interaction between kaolin particles and carbamate and by the changes in the configuration of kaolin aggregates, depending on the pH value.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7