Controlling biofilm growth in drinking and wastewater pipelines has attracted considerable scientific and technological attention over recent years. In this work, we have examined the biofilm control effectivity of a combined disinfectant comprised of hydrogen peroxide and silver ions. The performance of the combined disinfectant was compared to the effectivity of each of the ingredients alone and to the effectivity of chlorine disinfectant. Biofilm growth was investigated on uncoated and CaCO3 coated galvanized iron samples over prolonged exposure duration. It was found that the CaCO3 film does not significantly affect biofilm development. A combination of hydrogen peroxide and silver ions (30 ppm hydrogen peroxide and 30 ppb silver ions) were as effective in preventing film growth as hydrogen peroxide alone (30 ppm). Both compositions showed significant biofilm prevention effectivity as compared to silver ions alone. Biofilm prevention effectivity of chlorine (approximately 1 ppm) was considerably higher than that of the combined disinfectant. The bacteria that survived after 48 hours disinfection with hydrogen peroxide and the combined disinfectant showed high catalase activity hinting that hydrogen peroxide and the combined disinfectant may have a rather limited effectivity in continuous operation.
Skip Nav Destination
Article navigation
Research Article|
July 01 2000
Controlling biofilm formation by hydrogen peroxide and silver combined disinfectant
R. Armon;
R. Armon
*Faculty of Civil Engineering, Division of Environmental and Water Resources Engineering, Technion, Haifa, 32000, Israel
Search for other works by this author on:
N. Laot;
N. Laot
*Faculty of Civil Engineering, Division of Environmental and Water Resources Engineering, Technion, Haifa, 32000, Israel
Search for other works by this author on:
O. Lev;
O. Lev
**Division of Environmental Sciences, The Hebrew University of Jerusalem, 91904, Israel
Search for other works by this author on:
H. Shuval;
H. Shuval
**Division of Environmental Sciences, The Hebrew University of Jerusalem, 91904, Israel
Search for other works by this author on:
B. Fattal
B. Fattal
**Division of Environmental Sciences, The Hebrew University of Jerusalem, 91904, Israel
Search for other works by this author on:
Water Sci Technol (2000) 42 (1-2): 187–192.
Citation
R. Armon, N. Laot, O. Lev, H. Shuval, B. Fattal; Controlling biofilm formation by hydrogen peroxide and silver combined disinfectant. Water Sci Technol 1 July 2000; 42 (1-2): 187–192. doi: https://doi.org/10.2166/wst.2000.0312
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Impact Factor 2.430
CiteScore 3.4 • Q2
13 days submission to first
decision
1,439,880 downloads in 2021
218
Views
21
Citations