Biofilm formation on Copper and galvanized steel surfaces in a cooling-water system

Abstract

Cooling water systems provide ideal aquatic environment for the microorganism multipication. Copper andgalvanized steel are frequently used in the construction of cooling towers because of their well-knownantifouling property. The current study would examine the changes in total aerobic mesophilic heterotrophicbacteria (TAMHB) counts, the presence of Legionella and free-living amoeba on copper and galvanized steelsurfaces and the presence of biocide in a cooling water system. In this study biofilm was confirmed by SEM oncopper and galvanized coupons in experiments. Statistical analysis demostrated that heterotrophic bacteriacounts were significantly (P