The adhesion of microorganisms onto materials surface mediated by extmellular polymeric substances (EPS) lead to an important modification of the metal-solution interface. Thp requiremenf of modern civilization with the hightened sense of environmental responsibilities and quality of life can be met by using same eco-friendly microbiocides with different spectra of activity. Some N2O2 donor schiff base compounds warn synthesized and characterized by IR, NMR and ESR spectroscopy. These compounds were found effective In controlling the growth of biofilm of E. coli , Paedornones fiumwerra and Tfriobeoiflus ffriooxiderra on copper surface. The optimum concentration of these compounds are in the range of 1-10 ppm. Various electrochemical, microbiological and surface-analytical techniques were used to monitor the biofilm in the presence of microbiocides.
Keywords: Biofilm, coppor, microbiocides, microbiologically influenced corrosion (MIC), Schiff bases