Monitoring the effects of biocide treatment of Pseudomonas fluorescens biofilms formed under different flow regimes

• Type: Article in International Scientific Journal
• Date: 2003

Authors

Simoes, M (Author) Other; Pereira, MO (Author) Other; Vieira, MJ (Author) Other

Journal

Title: Water Science and Technology

Vol. 47

Pages: 217-223

ISSN: 0273-1223

Publisher: IWA PUBLISHING

Indexing

ISI Web of Knowledge - 26 Citations

Scopus - 28 Citations

Scientific classification

FOS: Engineering and technology > Environmental engineering

Other information

Authenticus ID: P-000-KRT

Abstract (EN): The effectiveness of glutaraldehyde (GTA), a very common biocide for controlling biofilms formed by Pseudomonas fluorescens on stainless steel slides, in laminar and turbulent flow, was investigated. Tests were performed using a concentration of biocide of 200 mg L-1 and a range of exposure times. The GTA action was assessed by means of activity tests and dry weight of the biofilms. The physical stability of the biofilm without biocide application and after exposure to GTA for different periods of time was also studied and evaluated through the variation of the mass of the deposit after submission to different rotation velocities. The results showed that, in all the situations studied, biofilms were not controlled after the treatment with biocide, since they remained on the metal surface and were still active. The results also demonstrated that the physical stability of the biofilms increased with biocide application.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7