State Water Resources Research Institute Program

Project ID: 2008MT172B
Title: Student Fellowship: How susceptible to chlorine disinfection are detached biofilm particles?
Project Type: Research
Start Date: 3/01/2008
End Date: 12/31/2008
Congressional District: At-large
Focus Categories: Treatment, Toxic Substances, Water Quality
Keywords: detached biofilms, disinfection
Principal Investigator: Benhke, Sabrina
Federal Funds: $ 1,000
Non-Federal Matching Funds: $ 0
Abstract: The disinfection susceptibilities of suspended planktonic cells have been well-studied for a large variety of biocides. These biocides have been found to be much less effective against cells in biofilms, requiring biocide concentrations orders of magnitude higher than those necessary to kill suspended planktonic cells.

Although the detachment of aggregated cells from biofilms is of fundamental importance to the dissemination of contamination and infection in both public health and clinical settings,the disinfection efficacies of commonly used biocides on detached particles have not been investigated yet. Therefore, the question arises: Can cells in detached aggregates be killed with disinfectant concentrations sufficient to kill planktonic cells?

Progress/Completion Report, PDF

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